Check Valves
Continuously Improving
Flow Control
High Performance By Design
Applicable Standards
KF check valves conform
to ANSI, API and NACE
specifications to meet your
application requirements.
ANSI - American National
Standard Institute
B 16.34
Specification steel valves.
B 16.5
Flanges & flanged fittings.
KF Valves has continuously provided
the industry with technically superior
products oriented toward applications
that can be exceptionally severe.
KF’s diversity in check valve
configurations and materials of
construction provide opportunities to
service customers in many different
markets. KF check valve designers
plan for your worst applications so
you get the very best regardless
of the factors involved— pressure,
environment, media transported
and cost. Whether it's critical control
of waste water flow, highly corrosive
refining applications or high pressure
in the oil patch, KF offers a wide range
of sizes, materials, options, efficient
design and stringent manufacturing
standards. Specifying KF check valves
guarantees you a valve optimally
designed for your application.
API - American
Petroleum Institute
Spec. 6A
Specification for
wellhead equipment.
Spec. 6D
Specification for pipeline valves.
Spec. 6FD
Specification for fire ratings.
Hydrogen Sulfide
(H2S Environments)
NACE MR0175 / ISO 15156
General principles for cracking
resistant materials in H2S
containing environments
in oil & gas production.
You’ll Find KF Check Valves Utilized in the Following Industries
This catalog details the many
ways KF check valves work
for you. Contact us today
for the representative or
distributor nearest you. KF
Check Valves are not intended
for pulsating reciprocating
service except for the series
50 piston check valve.
KF Valves
2
Geothermal
Refining
Marine
Industrial
Mining
Refrigeration
Iron & steel mills
Oil & gas production
Automotive manufacturing
CO2 injection /recovery
Pulp & paper
Oilfield production to NASA
Food processing
Ethanol
Water/ waste water
HVAC
Desalinization
Waterflood
Contents
Series 10 & 10G Flangeless Swing Style Long Pattern Wafer Check Valves with Internal Spring Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 5
Series 12 Short Pattern Swing Style Wafer Check Valves (No Spring) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 -7
Series 18 Flangeless Swing Style Wafer Check Valves with External Spring Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 - 9
Series 20 & 22 Semi-Lug Flangeless Swing Style Wafer Check Valves with External Spring Assist. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 -11
Series 31 Threaded & Socketweld Body Style Swing Check Valves (Screwed Bonnet) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Series 31B Bronze Threaded Body Style Swing Check Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Series 35 Flanged End Body Style Swing Check Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 -15
Series 50 Flanged End Body Style Piston Check Valves for Reciprocating or Pulsating Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 -17
Series 60 Screwed End Body Style Ball Check Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Specifying KF Wafer Check Valves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Cross Reference for Series 10 Check Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Recommendations for Installed Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Engineering Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22- 23
Notes
KF Valves
3
KF Series 10 Check Valves
Features
Flangeless bodied wafer style
design with round port and
spring assisted closure.
Offered in 2" thru 12"
class 150, 300 & 600
Designed to comply
with API 6D, API 6A &
API 594 specifications
Available in a wide range
of materials including
316 stainless steel trim
NACE MR0175/ISO 15156
(optional)
C
A
B
D
Dimensional Data (in., mm), 2"-12", Class 150, 300 & 600
Dim. /Class
(in., mm)
A
B
C
D
Weight
(lbs., kg)
150
300
600
300
600
300
600
150
300
600
150
300
600
2
in.
4.13
4.38
4.38
2.38
2.38
1.53
1.53
.50
.25
.25
5
8
8
3
mm
104.8
111.1
111.1
60.3
60.3
38.9
38.9
12.7
6.35
6.35
2.3
3.6
3.6
in.
5.38
5.88
5.88
2.88
2.88
2.06
2.06
.75
.75
.75
11
18
18
4
mm
136.5
149.2
149.2
73.0
73.0
52.4
52.4
19.1
19.1
19.1
5.0
8.2
8.2
Contact factory for series 10G weights and “B” dimensions.
KF Valves
4
in.
6.88
7.13
7.63
2.88
3.13
3.03
3.03
1.50
1.25
1.25
16
24
31
mm
174.6
181.0
193.7
73.0
79.4
77.0
77.0
38.1
31.8
31.8
7.3
10.9
14.1
Size (in.)
6
in.
mm
8.75
222.3
9.88
250.8
10.50 266.7
3.88
98.4
5.38
136.5
4.75
120.7
4.75
120.7
3.38
85.7
3.38
85.7
1.88
47.6
30
13.6
56
25.4
62
28.1
8
in.
11.00
12.13
12.63
5.00
6.50
6.44
6.44
3.50
3.50
2.00
50
70
167
10
mm
279.4
308.0
320.7
127.0
165.1
163.5
163.5
88.9
88.9
50.8
22.7
31.8
75.7
in.
13.38
14.25
15.65
5.75
8.38
7.63
7.63
4.44
4.44
2.00
90
135
354
12
mm
339.7
362.0
397.0
146.1
212.7
193.7
193.7
112.7
112.7
50.8
40.8
61.2
160.6
in.
16.13
16.63
18.00
7.13
9.00
9.50
9.50
5.09
5.09
3.22
145
211
465
mm
409.6
422.3
457.2
181.0
228.6
241.3
241.3
129.4
129.4
81.8
65.8
95.7
210.9
KF Series 10 & 10G Check Valve Part Number Codes
Base Number • See Chart Below
Body Configuration
1 • RF
2 • RTJ
3 • Smooth Face
Body Material*
13 • Carbon Steel
15 • 316 Stainless Steel
28 • LCC (Low Temp CS)
Coating / NACE / Misc. Options
2 • NACE
7 • NACE Enduro-Bond™ Coating
9 • None
D • Assembled Dry/ Silicone Free
Disc, Shaft & Bushings*
K • 316 Stainless Steel
Spring Material
2 • 316 Stainless Steel
4 • Inconel® X
Seat / Disc Face Configuration
1 • Integral Resilient / Metal
2 • Integral Metal / Metal
3 • Replaceable Resilient / Metal
4 • Replaceable Metal / Metal
6 • Integral Stellite® Overlay/Stellite® Overlay
Replaceable Seat Ring Material
2 • 316 Stainless Steel
9 • Not Applicable (Any Assembly w/Integral Seat Face)
Seal Material
1 • Buna N
2 • Viton®
3 • Teflon®
4 • EPDM
7 • Aflas®
9 • Not Applicable
(Any Assembly w/ Integral Metal Seat)
G • HNBR
Shaft Plug Material & Downstream Port
1 • CS (Standard w/CI or CS Body) without Port
2 • Same as Shaft Material without Port
7056 - 1 13 9 K 2 1 9 1 1
*Consult factory for the availability of materials not listed.
Example
Series 10 Assembly Base Numbers
Class
MOP
150
300
600
285
740
1480
2
708771207179-
3
708971227181-
4
709071237182-
Size (in.)
6
709271257184-
8
709371267185-
10
709471277186-
12
709571287187-
Series 10G Assembly Base Numbers (Non API 594)
Class
150
2
7313-
2 1/ 2
7314-
3
7315-
4
7316-
Size (in.)
5
7317-
6
7318-
8
7319-
10
7320-
12
7321-
KF Valves
5
KF Series 12 Check Valves
Features
Designed to comply with API 6D
specifications for short pattern
wafer check valves.
Offered in 2" thru 12"
class 150 • 285 psi MOP
class 300 • 740 psi MOP
class 600 • 1480 psi MOP
class 900 • 2220 psi MOP
2" thru 8", class 1500 • 3705 psi MOP
Standard 316 stainless steel
disc on 2" thru 4"
C
A
B
Dimensional Data (in., mm), 2"-12", Class 150, 300, 600, 900 & 1500
Dim. /Class
(in., mm)
150
300
A
600
900
1500
150
300
B
600
900
1500
150-300
C
600-900
1500
150
300
Weight
600
(lbs., kg)
900
1500
2
in.
4.13
4.38
4.38
5.63
5.63
.75
.75
.75
.75
.75
1.06
1.06
1.06
3
3
4
4
4
3
mm
104.8
111.1
111.1
142.9
142.9
19.1
19.1
19.1
19.1
19.1
27.0
27.0
27.0
1.4
1.4
1.8
1.8
1.8
KF Valves
6
in.
5.38
5.88
5.88
6.63
6.88
.75
.75
.75
.75
.88
1.88
1.88
1.63
5
6
6
7
9
4
mm
136.5
149.2
149.2
168.3
174.6
19.1
19.1
19.1
19.1
22.2
47.6
47.6
41.3
2.3
2.7
2.7
3.2
4.1
in.
6.88
7.13
7.63
8.13
8.25
.75
.75
.88
.88
1.25
2.93
2.63
2.50
6
7
8
12
19
mm
174.6
181.0
193.7
206.4
209.6
19.1
19.1
22.2
22.2
31.8
74.3
66.7
63.5
2.7
3.2
3.6
5.4
8.6
Size (in.)
6
in.
mm
8.75
222.3
9.88
250.8
10.50 266.7
11.38 288.9
11.13 282.6
.75
19.1
.88
22.2
1.13
28.6
1.38
34.9
1.75
44.5
4.50
114.3
4.13
104.8
4.13
104.8
12
5.4
15
6.8
20
9.1
24
10.9
49
22.2
8
in.
11.00
12.13
12.63
14.13
13.88
1.13
1.13
1.50
1.75
2.25
5.63
5.00
5.00
24
29
33
57
74
10
mm
279.4
308.0
320.7
358.8
352.4
28.6
28.6
38.1
44.5
57.2
142.9
127.0
127.0
10.9
13.2
15.0
25.9
33.6
in.
13.38
14.25
15.75
17.13
—
1.13
1.50
2.25
2.25
—
7.50
7.00
—
32
60
110
131
—
12
mm
339.7
362.0
400.1
435.0
—
28.6
38.1
57.2
57.2
—
190.5
177.8
—
14.5
27.2
49.9
59.4
—
in.
16.13
16.63
18.00
19.63
—
1.50
2.00
2.38
3.13
—
8.69
8.50
—
62
103
150
234
—
mm
409.6
422.3
457.2
498.5
—
38.1
50.8
60.3
79.4
—
220.7
215.9
—
28.1
46.7
68.0
106.1
—
KF Series 12 Check Valve Part Number Codes
Base Number
See Chart Below
Pressure Class
1 • Class 150
2 • Class 300
4 • Class 600
5 • Class 900
6 • Class 1500
Body Faces
1 • RF
3 • Smooth Face
Body Material*
13 • Carbon Steel
15 • 316 Stainless Steel
Coating / NACE / Misc. Options
2 • NACE
7 • NACE Enduro-Bond™ Coating
9 • Standard
Disc Material
B • Carbon Steel
K • Stainless Steel
Seat Face Configuration
1 • Integral Resilient (Non-replaceable)
2 • Integral Metal (Non-replaceable)
Seal Material
1 • Buna N
2 • Viton®
3 • Teflon®
4 • EPDM
9 • Not Applicable (Any Assembly w /Integral Metal Seat)
G • HNBR
7330 - 1 1 13 9 B 1 1
*Consult factory for the availability of materials not listed.
Example
Assembly Base Numbers
2
7330-
3
7332-
4
7333-
Size (in.)
6
7335-
8
7336-
10
7337-
12
7338-
KF Valves
7
KF Series 18 Check Valves
Features
Flangeless bodied wafer with non-API
lay length swing style check valve
with external spring assisted closure.
Offered in 4" thru 12"
class 150
Externally adjustable shaft
packing gland & back-flush
lever is standard
Available with either right-hand
or left-hand lever orientation
Note: KF Right-Hand Version Shown
A
E
F
C
G
D
B
Dimensional Data (in., mm), 4"-12", Class 150
Dimension
(in., mm)
A
B
C
D
E
F
G
Weight (lbs., kg)
4
in.
6.88
2.25
3.03
2.50
2.28
7.00
6.25
14
mm
174.6
57.2
77.0
63.5
57.9
177.8
158.8
6.4
KF Valves
8
Size (in.)
8
6
in.
8.75
2.75
4.75
4.00
3.25
7.00
7.50
25
mm
222.3
69.9
120.7
101.6
82.6
177.8
190.5
11.3
in.
11.00
2.88
6.44
5.50
4.03
11.25
8.50
33
mm
279.4
73.0
163.5
139.7
102.4
285.8
215.9
15.0
10
in.
13.38
3.13
7.63
7.00
4.75
13.00
10.50
55
12
mm
339.7
79.4
193.7
177.8
120.7
330.2
266.7
24.9
in.
16.13
3.50
9.50
9.50
5.88
15.00
12.50
78
mm
409.6
88.9
241.3
241.3
149.2
381.0
317.5
35.4
KF Series 18 Check Valve Part Number Codes
Base Number • See Chart Below
Body Material
13 • Carbon Steel
15 • 316 Stainless Steel
Coating & Specs
9 • None
D • Assemble Dry / Silicone Free
Disc, Shaft & Bushings
G • 304SS Disc & Shaft, Bronze Bushings
K • 316 Stainless Steel
Spring Material / Lever
1 • Carbon Steel / Carbon Steel Lever
2 • Stainless Steel / Carbon Steel Lever
3 • Stainless Steel / Stainless Steel Lever
& Stainless Steel Fasteners & Packing Follower
4 • Stainless Steel / Enduro-Bond™ Coated Lever
& Packing Follower w / Stainless Steel Fasteners
Seat / Disc Face Configuration
1 • Integral Resilient / Metal
2 • Integral Metal / Metal
3 • Replaceable Resilient / Metal
4 • Replaceable Metal / Metal
Replaceable Seat Ring Material
2 • 316 Stainless Steel
9 • Not Applicable (Any Assembly w/ Integral Seat Face)
Seal Material
1 • Buna N
2 • Viton®
3 • Teflon®
4 • EPDM
9 • Not Applicable (Any Assembly w/ Integral Seat Face)
G • HNBR
Shaft & Spring Configuration
1 • Right Shaft Spring Mount
2 • Left Shaft Spring Mount
3 • Dual Shaft, Right Spring Mount
7394 -13 9 G 1 1 9 1 1
Consult factory for any options not listed above.
Example
Assembly Base Numbers
Class
MOP
150
285
4
7392-
6
7394-
Size (in.)
8
7395-
10
7396-
12
7397-
KF Valves
9
KF Series 20 & 22 Check Valves
Features
Externally adjustable shaft
packing is standard
Available with either right-hand,
left-hand or double extended
lever/shaft orientation
Standard flush port connection
Series 22 air cushion dampens
final 10% of closure
Semi-lug, flangeless bodied swing
style design with externally adjustable
spring assisted closure.
Offered in 2" thru 72"
class 150 • 285 psi MOP
class 300 • 740 psi MOP
2" thru 24"
class 600 • 1480 psi MOP
Series 20 modifiable in the field
to accept series 22 air cushion
Note: KF Series 22
Right-Hand Version
Shown with Optional
Lever & Weight.
A
E
F
C
G
D
B
Dimensional Data (in., mm), 2"-30", Class 150
Dimension
A
B
C
D
E
F
G
Weight (lbs.)
2
4.13
3.75
1.50
.41
1.22
6.63
8.75
29
3
5.38
3.75
2.06
.78
1.80
9.88
9.75
39
4
6.88
3.75
3.03
1.38
2.27
9.88
9.75
52
6
8.63
3.75
4.75
3.41
3.34
12.50
11.50
73
8
10.88
3.75
6.56
5.41
4.38
12.50
13.50
88
10
13.25
4.75
7.63
6.13
5.34
12.50
14.50
152
A
B
C
D
E
F
G
Weight (kg)
104.8
95.3
38.1
10.3
31.0
168.3
222.3
13.2
136.5
95.3
52.4
19.8
45.6
250.8
247.7
17.7
174.6
95.3
77.0
34.9
57.5
250.8
247.7
23.6
219.1
95.3
120.7
86.5
84.9
317.5
292.1
33.1
276.2
95.3
166.7
137.3
111.1
317.5
342.9
39.9
336.6
120.7
193.7
155.6
135.7
317.5
368.3
68.9
KF Valves
10
Size (in.)
12
16.00
4.75
9.50
7.88
6.38
17.00
16.50
220
Size (mm)
406.4
120.7
241.3
200.0
161.9
431.8
419.1
99.8
14
17.63
7.75
10.19
7.06
7.00
30.00
20.25
320
16
20.13
8.75
11.00
8.06
8.13
30.00
22.25
445
18
21.50
8.75
12.50
9.75
9.00
30.00
23.25
582
20
23.75
9.75
15.13
11.50
10.88
31.50
27.00
763
24
28.13
9.75
18.63
14.34
12.25
31.50
31.00
897
30
34.50
9.75
23.63
22.06
15.50
31.50
36.75
1360
447.7
196.9
258.8
179.4
177.8
762.0
514.4
145.1
511.2
222.3
279.4
204.8
206.4
762.0
565.2
201.8
546.1
222.3
317.5
247.7
228.6
762.0
590.6
264.0
603.3
247.7
384.2
292.1
276.2
800.1
685.8
346.1
714.4
247.7
473.1
364.3
311.2
800.1
787.4
406.9
876.3
247.7
600.1
560.4
393.7
800.1
933.5
616.9
KF Series 20 & 22 Check Valve Part Number Codes
Base Number • See Chart Below
Body Material
13 • Carbon Steel
15 • 316 Stainless Steel
Special Application to KF Valve
9 • None
D • Assemble Dry / Silicone Free
Disc, Shaft & Bushings
G • 304 SS Disc & Shaft, Bronze Bushings
K • 316 Stainless Steel
Spring Material / Lever & Weight
1 • CS without Lever & Weight
2 • SS without Lever & Weight
Seat / Disc Face Configuration
1 • Integral Resilient / Metal
2 • Integral Metal / Metal
3 • CS w/ CS Lever & Weight
4 • SS Spring w /CS Lever & Weight
3 • Replaceable Resilient / Metal
4 • Replaceable Metal / Metal
Replaceable Seat Ring Material
2 • 316 Stainless Steel
9 • Not Applicable (Any Assembly w/ Integral Seat Face)
Seal Material
1 • Buna N
2 • Viton®
3 • Teflon®
4 • EPDM
9 • Not Applicable (Any Assembly w/Integral Seat Face)
G • HNBR
Position Indicator & Switch
1 • Position Indicator Only
9 • None
Shaft & Spring Configuration
1 • Right Shaft Spring Mount
2 • Left Shaft Spring Mount
3 • Dual Shaft, Right Spring Mount
7595 -13 9 G 2 3 2 4 9 1
Consult factory for any options not listed above.
Example
Assembly Base Numbers, Series 20
Class
150
2
7458-
3
7460-
4
7461-
6
7463-
8
7464-
10
7465-
Size (in.)
12
7466-
14
7467-
16
7468-
18
7469-
20
7470-
24
7472-
30
7473-
6
7588-
8
7589-
10
7590-
Size (in.)
12
7591-
14
7592-
16
7593-
18
7594-
20
7595-
24
7597-
30
7598-
Assembly Base Numbers, Series 22
Class
150
2
7583-
3
7585-
4
7586-
KF Valves
11
KF Series 31 Check Valves
Features
Threaded, grooved and socketweld
end connections swing style design
with threaded bonnet.
Offered in ductile iron, 1" thru 4"
300, 600, 750, 1000, 1500
& 2000 psi MOP
carbon steel, 1" thru 4"
300, 750, 1500, & 2220 psi MOP
1" thru 3" • 3000 psi MOP
1" only • 5000 psi MOP
Available in ductile iron, carbon
steel & 316 stainless steel, 316
stainless steel trim is standard
Acceptable for vertical "upflow"
applications & suitable
for pigging
Standard seating configuration
has o-ring seal located in disc
for ease of replacement
NACE MR0175 /ISO 15156
Part Number Codes
Base Number • See Chart Below
End Connection
D • Threaded Ends
B
Pressure Rating
1 • 300
2 • 600
3 • 750
4 • 1000
5 • 1500
6 • 2000
7 • 2220
8 • 3000
9 • 5000
Body & Bonnet Material
12 • Ductile Iron (Thru 2000 Only)
13 • Carbon Steel
15 • 316 Stainless Steel
Coating & NACE
9 • NACE (Standard)
Disc, Shaft & Bushings
K • 316SS (Standard)
Seat /Disc Face Configuration
1 • Integral Metal /Resilient (Std.)
Options
9 • Standard
Seal Material
2 • Viton®
3 • Teflon® (Requires
Viton® Bonnet Seal)
6 • HNBR (Standard)
A
Dimensional Data (in., mm), 1"- 4"
Dim. / Material
(in., mm)
A
All Materials
B
All Materials
Weight
Ductile Iron
(lbs.)
CS, SS
1
4.25
3.58
5
5
A
B
Weight
(kg)
108.0
90.1
2.3
2.3
All Materials
All Materials
Ductile Iron
CS, SS
Size (in.)
2
3
6.00
8.00
4.36
5.80
10
23
13
28
Size (mm)
152.4
203.2
110.8
147.3
4.5
10.4
5.9
12.7
4
10.00
7.11
46
46
254.0
180.6
20.9
20.9
Consult factory for part numbers and dimensional data for parts not listed.
Assembly Base Numbers
Size (in.)
7681-D 3 13 9 K 1 9 6
Example
KF Valves
12
1
7677
2
7679
3
7681
4
7682
KF Series 31B Check Valves
Features
Threaded end connection swing style
design with threaded bonnet.
Offered in 1" thru 4"
300 psi MOP
Bronze body & bonnet
Acceptable for vertical "upflow"
applications & suitable
for pigging
NACE MR0175 / ISO 15156
Part Number Codes
Base Number • See Chart Below
End Connection
1 • Threaded Ends
B
Pressure Rating
1 • 300
Body & Bonnet Material
15 • Stainless Steel
25 • Bronze
Options
9 • Standard
A
Disc, Shaft & Bushings
S • Stainless Steel
T • Bronze
Seat/Disc Face Configuration
1 • Integral Metal /Resilient
Options
9 • Standard
Seal Material
1 • Buna N (Standard)
2 • Viton®
Dimensional Data (in., mm), 1"- 4"
Dimension
(in., mm)
A
B
Weight (lbs.)
1
3.75
2.00
4.5
A
B
Weight (kg)
95.2
50.8
2.0
Size (in.)
2
3
5.25
7.25
3.00
4.38
8
17
Size (mm)
133.3
184.1
76.2
111.1
3.6
7.7
4
9.25
5.25
37
235
133.3
16.8
Assembly Base Numbers
Size (in.)
7681-1 1 25 9 T 1 9 1
1
7677
2
7679
3
7681
4
7682
Example
KF Valves
13
KF Series 35 Check Valves
Features
Flanged end RF & RTJ swing style
integrally cast flange design.
Offered in 2 1/16" thru 7 1/16"
API 2000, 3000 & 5000
2" thru 16"
class 150, 300, 600, 900 & 1500
Std. trim includes 316 stainless
steel disc, shaft & bushings
Unique opt. 316 stainless steel
removable seat available
Installs in vertical “upflow”
applications with no
modification & suitable
for pigging
NACE MR0175 / ISO 15156
Dimensional Data (in., mm), 2 1/16"-7 1/16", API 2000, 3000 & 5000
Dim. / API
(in., mm)
A
B
B
Ring
Size
Weight
(lbs., kg)
A
2 1/16
in.
11.63
14.63
14.63
5.25
5.88
6.13
R23
R24
R24
48
78
78
2000
3000
5000
2000
3000
5000
2000
3000
5000
2000
3000
5000
mm
295.3
371.5
371.5
133.4
149.2
155.6
R23
R24
R24
21.8
35.4
35.4
Size (in.)
3 1/ 8
in.
mm
14.13
358.8
15.13
384.2
18.63
473.1
6.25
158.8
6.75
171.5
7.38
187.3
R31
R31
R31
R31
R35
R35
97
44.0
115
52.2
128
58.1
4 1/16
in.
mm
17.13
435.0
18.13
460.4
21.63
549.3
7.50
190.5
8.25
209.6
8.88
225.4
R37
R37
R37
R37
R39
R39
155
70.3
215
97.5
365
165.6
7 1/16
in.
mm
22.13
562.0
24.13
612.8
28.00
711.2
10.25
260.4
10.75
273.1
11.63
295.3
R45
R45
R45
R45
R46
R46
300
136.1
435
197.3
765
347.0
Dimensional Data (in., mm), 2"-16", Class 125, 300, 600, 900 & 1500
Dim. /Class
(in., mm)
in.
mm
150
300
600 RF
600 RTJ
A
900 RF
900 RTJ
1500 RF
1500 RTJ
150
B
300
B
600
900
1500
600
Ring
900
Size
1500
150
300
Weight
600
(lbs., kg)
900
1500
2
in.
8.00
10.50
11.50
11.63
14.50
14.63
14.50
14.63
4.75
4.75
5.25
5.25
5.88
R23
R24
R24
19
26
48
80
118
3
mm
203.2
266.7
292.1
295.3
368.3
371.5
368.3
371.5
120.65
120.65
133.4
133.4
149.2
R23
R24
R24
8.6
A
11.8
21.8
36.3
53.5
in.
9.50
12.50
14.00
14.13
15.00
15.13
18.50
18.63
5.50
5.50
6.25
6.75
7.38
R31
R31
R35
48
65
97
115
128
4
mm
241.3
317.5
355.6
358.8
381.0
384.2
469.9
473.1
139.7
139.7
158.8
171.5
187.3
R31
R31
R35
21.8
29.5
44.0
52.2
58.1
KF Valves
14
in.
11.53
14.00
17.00
17.13
18.00
18.13
21.50
21.63
6.25
6.50
7.50
8.25
8.88
R37
R37
R39
75
101
155
215
365
6
mm
292.9
355.6
431.8
435.0
457.2
460.4
546.1
549.3
158.8
165.1
190.5
209.6
225.4
R37
R37
R39
34.0
45.8
70.3
97.5
165.6
in.
14.00
17.50
22.00
22.13
24.00
24.13
27.75
28.00
8.00
8.88
10.25
10.75
11.63
R45
R45
R46
110
185
300
435
765
mm
355.6
444.5
558.8
562.0
609.6
612.8
704.9
711.2
203.2
225.4
260.4
273.1
295.3
R45
R45
R46
49.9
83.9
136.1
197.3
347.0
Size (in.)
8
in.
mm
19.50 495.3
21.00 533.4
26.00 660.4
26.13 663.6
29.00 736.6
29.13 739.8
32.75 831.9
33.13 841.4
10.50 266.7
11.75 298.5
13.00 330.2
13.75 349.3
15.50 393.7
R49 R49
R49 R49
R50 R50
220 99.8
370 167.8
560 254.0
775 351.5
1220 553.4
10
in.
mm
24.50 622.3
24.50 622.3
31.00 787.4
31.13 790.6
33.00 838.2
33.13 841.4
39.00 990.6
39.38 1000.1
13.00 330.2
13.00 330.2
14.63 371.5
15.50 393.7
18.25 463.6
R53 R53
R53 R53
R54 R54
530 240.4
530 240.4
1020 462.7
1250 567.0
1560 707.6
12
in.
mm
27.50 698.5
28.00 711.2
33.00 838.2
33.13 841.5
38.00 965.2
38.13 968.4
44.50 1130.3
45.13 1146.2
13.63 346.1
14.50 368.3
16.38 415.9
17.25 438.2
20.50 520.7
R57 R57
R57 R57
R58 R58
650 294.8
900 408.2
1355 614.6
1620 734.8
2050 929.9
14
in.
mm
31.00 787.4
33.00 838.2
35.00 889.0
35.13 892.2
—
—
—
—
—
—
—
—
17.00 431.8
18.25 463.6
19.75 501.7
—
—
—
—
R61 R61
—
—
—
—
1150 521.6
1450 657.7
1975 895.8
—
—
—
—
16
34.00
34.00
39.00
39.13
—
—
—
—
21.75
21.75
23.50
—
—
R65
—
—
2010
2010
2500
—
—
863.6
863.6
990.6
993.8
—
—
—
—
552.5
552.5
596.9
—
—
R65
—
—
911.7
911.7
1134.0
—
—
KF Series 35 Check Valve Part Number Codes
Base Number • See Chart Below
End Connections
1 • RF
2 • RTJ
Body, Bonnet & Plug Material*
13 • CS (Black Finish CS Bolting)
14 • 4C (Black Finish CS Bolting)
15 • 316SS (Xylan® Ctd. CS Bolting)
28 • LCC (Blk. Finish LT Bolting & 316SS Plug)
51 • CS (Xylan® Coated CS Bolting)
Internal Coating & NACE
4 • NACE II (Class II Bolting)
9 • NACE III / Class III Bolting (Std.)
Disc & Trim
K • 316SS (Standard)
Trough Body Design Revision Option
B • Cast Trough, Revision B Design
C • New Machined Trough, Class 150, 300 & 600, Revision C Design
Seat / Disc Seal Configuration
1 • Integral Metal/Resilient
2 • Integral Metal/Metal
3 • Replaceable Resilient /Metal
4 • Replaceable Metal /Metal
0 • Replaceable Stellite® Overlay/
Stellite® Overlay
Replaceable Seat Ring Material
2 • 316SS
9 • Not Applicable (Integral Seat Face)
Seal Material (Bonnet, Seat / Disc Face, Seat Sub-Seal)
1 • Buna N
A •James Walker® Viton®
2 • Viton®
B • Viton® GF
G • HNBR
3 • Teflon®*
9 • Not Applicable
(For HT Bonnet Gasket w/Integral M x M Seat, Opt. 2)
Options
1 • None
2 • Body Drain
3 • Firesafe (HT Bonnet Gasket)
4 • Firesafe (HT Bonnet Gasket) w/Body Drain
*For replaceable seats only: Use Viton® seals.
7854 - 1 13 9 K C 1 9 G 1
Consult factory for the availability of materials and sizes not listed.
Example
Assembly Base Numbers, 2"-24", Class 150, 300, 600, 900 & 1500 • 2 1/16"-7 1/16", API 2000, 3000 & 5000
Class
MOP
150 285
300 740
600 1480
900 2220
1500 3705
2
77767802785478807906-
3
77787804785678827908-
4
77797805785778837909-
6
77817807785978857911-
8
77827808786078867912-
Size (in.)
10
12
14
16
18
20
24
7783- 7784- 7785- 7786- 7787- 7788- 77907809- 7810- 7811- 7812- 7813- — 78167861- 7862- 7863- 7864- 7865- 7866- 78687887- 7888- —
—
— 7892- —
7913- 7914- —
—
—
—
—
Size (in.)
2 1/16 3 1/8 4 1/16 7 1/16
2000 7917- 7918- 7919- 79203000 7926- 7927- 7928- 79295000 7935- 7936- 7937- 7938API
KF Valves
15
KF Series 50 Piston Check Valves
Features
The precisely metered check valve and orifice
in the piston head combined with spring
assisted closure controls piston descent to
avoid seat slamming and promote smooth,
quiet operation and positive backflow
prevention with fluids or gasses.
Offered in 2" thru 8" • class 600 & 900
Threaded piston seat that is
easily removed & replaced
while valve is in-line
Smooth highly polished
replaceable sleeve for
easy maintenance &
long-lasting performance
Ideal for compressor &
pulsating services
Available with stellite® sealing
surface & end connections
in raised face or ring type joint
G
Meets or exceeds ANSI B 16.34
requirements with flanges
conforming to B 16.5.
Note: exception to lay length
E
F
NACE MR0175 /
ISO 15156 (optional)
A
Port
D
H • No. Holes
2"- 4" • 8, 6"- 8" • 12
B
J • Hole Dia.
K • Bolt Circle
Dimensional Data (in., mm), 2"- 8", Class 600 & 900
Dim. /Class
(in., mm)
600-900
A
600RF
900 RF
B
600 RTJ
900 RTJ
600
D
900
600
E
900
600
F
900
600
G
900
600
J
900
600
K
900
Ring Groove
600
RTJ Only
900
Weight
600
(lbs., kg)
900
2
in.
2.07
11.00
13.63
11.13
13.75
6.50
8.50
1.25
1.75
8.94
9.56
7.50
8.50
.75
1.01
5.00
6.50
R23
R24
85
135
KF Valves
16
3
mm
52.5
279.4
346.1
282.6
349.3
165.1
215.9
31.8
44.5
227.2
242.0
190.5
215.9
19.1
25.6
127.0
165.1
R23
R24
38.6
61.2
in.
3.13
14.75
14.88
14.88
15.00
8.25
9.50
1.50
1.81
10.69
11.63
9.88
11.00
.87
1
6.63
7.50
R31
R31
175
235
mm
79.5
374.7
377.8
377.8
381.0
209.6
241.3
38.1
46.0
271.6
299.5
250.8
279.4
22.1
25.4
168.3
190.5
R31
R31
79.4
106.6
Size (in.)
4
in.
mm
4.07
103.3
18.50
469.9
19.38
492.1
18.63
473.1
19.50
495.3
10.75
273.1
11.50
292.1
1.75
44.5
2.00
50.8
13.11
333.05
13.88
352.5
11.00
279.4
12.75
323.9
1.00
25.4
1.25
31.8
8.50
215.9
9.25
235.0
R37
R37
R37
R37
290
131.5
335
152.0
6
in.
6.00
20.75
21.88
20.88
22.00
14.00
15.00
2.13
2.44
16.63
17.63
14.50
15.50
1.12
1.25
11.50
12.50
R45
R45
550
790
8
mm
152.4
527.1
555.6
530.2
558.8
355.6
381.0
54.0
61.9
422.3
447.7
368.3
393.7
28.4
31.8
292.1
317.5
R45
R45
249.5
358.3
in.
8.00
24.00
24.88
24.13
25.00
16.50
18.50
2.44
2.75
19.75
20.25
18.00
19.25
1.25
1.50
13.75
15.50
R49
R49
810
1285
mm
203.2
609.6
631.8
612.8
635.0
419.1
469.9
61.9
69.9
501.7
514.4
437.2
489.0
31.8
38.1
349.3
393.7
R49
R49
367.4
582.9
KF Series 50 Piston Check Valve Part Number Codes
Base Number • See Chart Below
End Connections
1 • RF
2 • RTJ
Body
1 • WCB
Specification
1 • Standard (Non-NACE)
2 • NACE III (Requires CF8M P / S / S) Class III Bolting
Piston Seat / Sleeve Material
2 • CF8M / CF8M / CF8M (Teflon® Rings)
4 • CA -15M / CA -15M / C.I.
Piston & Seat Configuration
1 • Standard
4 • Stellite® Face
Flow Media
1 • Gas
4 • Liquid
Orifice
D • .031 (Standard for 2")
J • .046 (Standard for 3" & 4")
P • .062 (Standard for 6" & 8")
V • .218 (Standard for All Liquid Service)
Bonnet Seal
1 • 2"- 4" (Viton® O -Ring), 6" & 8" (Graphite)
G • HNBR
Spring
1 • Carbon Steel
2 • Inconel® X-750 (All NACE)
Options
1 • None
1030 - 1 1 1 4 1 1 J 1 1 1
Example
Assembly Base Numbers
Class
MOP
300
600
900
740
1480
2220
2
102310291034-
3
102410301035-
Size (in.)
4
102510311036-
6
102610321037-
8
102710331038-
KF Valves
17
KF Series 60 Ball Check Valves
Features
Horizontal or vertical “upflow”
installation. Gravity return
eliminates need for ball
return spring.
Offered in 1" thru 2"
1000, 1500, 2000,
3000 & 5000 psi MOP
Replaceable resilient seat with
a metal-to-metal back-up seal
Pulsating & low flow rate
service causes minimal part
wear & flow restriction
is nominal
NACE MR0175 / ISO 15156
Part Number Codes
Ball In Open Position
Base Number • See Chart Below
Pressure Rating
1 • 1000
2 • 1500
3 • 2000
4 • 3000
5 • 5000
B
C
Body Material
1 • Carbon Steel
5 • Ductile Iron
D
Seat Material
2 • Viton®
A
Seat Insert
Valve Illustrated in Closed Position
1 • 304 Stainless Steel
Ball Material
Dimensional Data (in., mm), 1"- 2"
Dimension
(in., mm)
1 • 440 Stainless Steel
Size (in.)
1
in.
A
4.38
B
1.94
C
.94
1-11.5 NPT
D
Wt. (lbs., kg)
3.50
2
mm
111.1
49.2
23.8
1-11.5 NPT
1.6
in.
6.50
3.13
1.50
2 -11.5 NPT
14
mm
165.1
79.4
38.1
2 -11.5 NPT
6.4
Example
Material Pressure Ratings
Pressure Rating
1000 MOP
1500 MOP
2000 MOP
3000 MOP
5000 MOP
Material
Ductile Iron
Ductile Iron
Ductile Iron, Cast Steel
Cast Steel
Cast Steel
KF Valves
18
7966 -1 5 2 1 1
Flow Coefficient (Cv)
Assembly Base Numbers
Size (in.)
1
30
Size (in.)
2
105
1
7966-
2
7968-
Specifying KF Wafer Check Valves
The wafer check is installed between
two flanges inside the bolt circle
of the studs. Its unique design with
a short face-to-face can tackle the
toughest conditions. Compared to
a conventional swing check valve,
the wafer check valve is lighter and
easier to install. The lighter weight
makes the valve less expensive,
especially in higher alloy materials.
Wafer check valves reduce
maintenance, installation, shipping
cost and storage space. Unlike the
conventional swing check valve,
the wafer check valve requires only
one set of studs and half the nuts.
Expensive joints or special supports
are not required.
KF wafer swing check valves perform
in either horizontal or vertical
upflow. They may be used in virtually
any service except for pulsating
reciprocating service. The round
unobstructed port design makes
the valve suitable for application
in industries where dirty media are
present. The round port decreases
velocities, reduces pressure drop,
damaging turbulence and debris
collecting in the port area.
KF wafer swing check valves
are designed to comply with API
standard 594 and API 6D (long
pattern). Materials of construction
conform to ASTM standards and
when requested, to NACE standard
MR0175. KF wafer swing check valves
are offered in sizes 2" and larger.
Trim Technology
Hardface Trim
The seating faces of the disc and the
seat, either integral or removable,
are weld overlayed with .06 inches
minimum thickness of hardface to
produce corrosion resistant hardfaced
sealing surfaces. The disc can be
furnished with either metal-to-metal
or elastomer seals. Base metal can
be either carbon or stainless steel.
Removable seats with overlay are not
available in wafer checks.
Stainless Overlay Trim
The seating surfaces of the disc and
seat, either integral or removable,
are weld overlayed with .06 inches
minimum thickness of 316L stainless
steel to produce corrosion resistant
sealing surfaces. The disc can be
furnished with either metal-to-metal
or elastomer seals.
Metal-To-Metal Trim
Generally used for higher
temperatures exceeding the
capabilities of elastomers and
plastics. The seating faces of the disc
and seat, either integral or removable,
are metal-to-metal. This configuration
can be furnished in carbon steel,
stainless steel or hardface trims.
The leakage rate will not exceed that
specified by API 598.
Removable / Replaceable Seat Ring
A removable seat ring can be
furnished in any trim for 2" and
larger bolted cover check valves.
Unique patented seat provides easy
replacement. Wafer check valves are
also available with replaceable seat rings.
API Firesafe Bolted Bonnets
Many sizes and pressure classes
of KF bolted bonnet full body style
through conduit check valves are
available as firesafe per API 6FD.
Applications
Series 10
Heating, ventilating
& air conditioning
Irrigation
Blower
Pneumatic conveying
Suction & discharge
pumping systems
Water injection & tank discharge
Chemical processing
Ship (on/off land, fire
main, fuel oil)
Vapor recovery
Raw water
Condenser & cooling water
Vacuum
Refrigeration
Mobile tank
Refinery
Series 12
For applications where valve is
normally closed and flow is
relatively low, steady and not
pulsating. Velocity not to exceed:
liquid 15'/sec. • gasses 100'/sec.
Series 18, 20 & 22
Sewage handling
Dry material handling
Pulp & paper / body 317
stainless steel, internal spring,
inconel ®, ext. stainless steel
Sump pump
Mining
Blower discharge
Manifold systems
Slurry pumps
Oil & gas transmission
Recirculation systems
Booster stations
Chemical & food processing
Iron & steel mills
Irrigation & waste water
Municipal, ind. water
& desalinization
Ethanol
KF Valves
19
Cross Reference for Series 10 Check Valve
KF Valves
20
Series 10 Equivalent
carbon steel body,
316 stainless steel trim,
buna n seal
Series 10 Equivalent
316 stainless steel body,
316 stainless steel trim,
buna n seal
ANSI 150
Apco: 912CRIR
digit #3 designates size
Gulf: MB 15 -221SR
Marlin: 2A150CCNSR
digit #1 designates size
Mission: 15SMF
Muesco: 2.0 -72- D- H-D-3H
digits #1 & 2 designates size
Keystone: FIG 810
Pro-Quip: 2BB11-1B
Technocheck: 5051
Valmatic: 8602-CCN-SSF
digits #3 & 4 designates size
ANSI 150
Apco: 912GRIR
digit #3 designates size
Gulf: MB 15- 641SR
Marlin: 2A150 -SSNSR
digit #1 designates size
Mission: 15CMF
Muesco: 2.0 -72-H - H-H-3H
digits #1 & 2 designates size
Keystone: FIG 810
Pro-Quip: 2DD11-1B
Technocheck: 5051-316
Valmatic: 8602-SSN-SSR
digits #3 & 4 designates size
ANSI 300
Apco: 932CRIR
digit #3 designates size
Gulf: MB 30-221SF
Marlin: 2A300 -CCNSR
digit #1 designates size
Mission: 30SMF
Muesco: 2.0 -74-D-H-D -3H
digits #1 & 2 designates size
Keystone: FIG 809
Pro-Quip: 4BB11-1B
Technocheck: 5053
Valmatic: 8502-CCN-SSR
digits #3 & 4 designates size
ANSI 300
Apco: 932GRIR
digit #3 designates size
Gulf: MB 30-641SR
Marlin: 2A300-SSNSR
digit #1 designates size
Mission: 30CMP
Muesco: 2.0 -74 - H - H-H-3H
digits #1 & 2 designates size
Pro-Quip: 4DD11-1B
Technocheck: 5053-316
Valmatic: 8502-SSN-SSR
digits #3 & 4 designates size
ANSI 600
Apco: 962CRIR
digit #3 designates size
Gulf: MB 60-221SR
Marlin: 2A600-CCNSR
digit #1 designates size
Mission: 60SMF
Pro-Quip: 6BB11-1B
Technocheck: 5056
Valmatic: 8302-CCN - SSR
digits #3 & 4 designates size
ANSI 600
Apco: 962GRIR
digit #3 designates size
Gulf: MB 60- 641SR
Marlin: 2A600 - SSNSR
digit #1 designates size
Mission: 60CMP
Pro-Quip: 6DD11-1B
Technocheck: 5056 -316
Valmatic: 8302- SSN - SSR
digits #3 & 4 designates size
Recommendations for Installed Position
Position the check valve to
promote smooth flow. Allow
clearance for disc movement.
Install the valve in horizontal or
upward flow for proper
valve closure.
Note: Swing check valves should
not be used in reciprocating
compressor or pulsating service.
For such applications the KF
series 50 piston check valve
is recommended.
Note Hinge
Position
Normal
Flow
Note Hinge
Position
Normal
Flow
Normal
Flow
Normal
Flow
Normal
Flow
Normal
Flow
KF Valves
21
Engineering Data
Wafer Check Temperature & Working Pressure by Classes
A216 Grade WCB or A105 Carbon Steel • ANSI B16.34
Temp (˚F)
-20 to 100
200
300
400
500
600
650
700
750
800
850
900
950
1000
150
285
260
230
200
170
140
125
110
95
80
65
50
35
20
Working Pressure By Classes (psig)
300
600
900
1500
740
1480
2220
3705
675
1350
2025
3375
655
1315
1970
3280
635
1270
1900
3170
600
1200
1795
2995
550
1095
1640
2735
535
1075
1610
2685
535
1065
1600
2665
505
1010
1510
2520
410
825
1235
2060
270
535
805
1340
170
345
515
860
105
205
310
515
50
105
155
260
A351 Grade CF8M 316 Stainless Steel • ANSI B16.34
Temp (˚F)
2500
6170
5625
5470
5280
4990
4560
4475
4440
4200
3430
2230
1430
860
430
-20 to 100
200
300
400
500
600
650
700
750
800
850
900
950
1000
1050
1100
1150
1200
1250
1300
1350
1400
1450
1500
A352 Grade LCB Low Temp Carbon Steel • ANSI B16.34
Temp (˚F)
-20 to 100
200
300
400
500
600
650
150
265
250
230
200
170
140
125
Working Pressure By Classes (psig)
300
600
900
1500
695
1390
2085
3470
655
1315
1970
3280
640
1275
1915
3190
620
1235
1850
3085
585
1165
1745
2910
535
1065
1600
2665
525
1045
1570
2615
150
275
240
215
195
170
140
125
110
95
80
65
50
35
20
—
—
—
—
—
—
—
—
—
—
2500
5785
5470
5315
5145
4850
4440
4355
A352 Grade LCC Low Temp CS • ANSI B16.34 (650˚F Max.)
A217 Grade Martensitic SS CA-15 • ANSI B16.34 Annex F
-20 to 100
200
300
400
500
600
650
700
150
290
260
230
200
170
140
125
110
Working Pressure By Classes (psig)
300
600
900
1500
750
1500
2250
3750
750
1500
2250
3750
730
1455
2185
3640
705
1410
2115
3530
665
1330
1995
3325
605
1210
1815
3025
590
1175
1765
2940
570
1135
1705
2840
2500
6000
5160
4660
4280
3980
3760
3700
3600
3520
3460
3320
3280
3220
3030
3000
2685
2285
1715
1515
1145
860
630
485
345
A126 Class B Cast Iron • ANSI B16.1
Working Pressure By Classes (psig)
125 (NPS)
250 (NPS)
1-12
14 -24 30 - 48
1-12
14 -24 30 - 48
200
150
150
500
300
300
190
135
115
460
280
250
180
130
100
440
270
225
175
125
85
415
260
200
170
120
65
395
250
175
165
110
50
375
240
150
155
105
—
355
230
125
150
100
—
335
220
100
145
—
—
315
210
—
140
—
—
290
200
—
130
—
—
270
—
—
125
—
—
250
—
—
Temp (˚F)
Temp (˚F)
Working Pressure By Classes (psig)
300
600
900
1500
720
1440
2160
3600
620
1240
1860
3095
560
1120
1680
2795
515
1030
1540
2570
480
955
1435
2390
450
905
1355
2255
445
890
1330
2220
430
865
1295
2160
425
845
1270
2110
415
830
1245
2075
405
810
1215
2030
395
790
1180
1970
385
775
1160
1930
365
725
1090
1820
360
720
1080
1800
325
645
965
1610
275
550
825
1370
205
410
620
1030
180
365
545
910
140
275
410
685
105
205
310
515
75
150
225
380
60
115
175
290
40
85
125
205
2500
6250
6250
6070
5880
5540
5040
4905
4730
-20 to 150
200
225
250
275
300
325
353
375
406
425
450
Flow Coefficients (Cv)
Series
10, 19,
20, 22
12
35
2
3
4
5
6
8
Size (in.)
10
12
14
16
18
20
24
95
156
366
430
710
1280
2350
3850
4260
7000
9550
13,000
25,000
75
120
124
250
300
450
405
—
675
1320
1000
2816
1950
5200
3050
8500
—
10,250
—
13,500
—
17,250
—
21,500
—
31,500
KF Valves
22
Engineering Data
Wafer Check Temperature & Working Pressure by Classes
B148 Alloy 952 Aluminum Bronze • ANSI B16.31
Temp (˚F)
-20 to 100
150
200
250
300
350
400
450
500
A395 Ductile Iron • ANSI B16.42
Working Pressure By Classes (psig)
300
600
900
1500
515
1030
1545
2575
430
855
1285
2140
400
800
1205
2005
385
770
1150
1920
370
740
1110
1850
365
735
1100
1835
365
725
1090
1820
360
725
1085
1805
360
720
1080
1800
150
195
165
155
145
140
140
140
140
140
Working Pressure By Classes (psig)
150
300
250
640
235
600
215
565
200
525
170
495
140
465
125
450
Temp (˚F)
2500
4290
3570
3340
3200
3085
3060
3030
3010
3000
-20 to 100
200
300
400
500
600
650
Sealing Member Materials*
Material
Aflas®
Buna N
EPDM
HNBR
Temp Range (˚F)
+32 to 450
-20 to 250
-50 to 450
-50 to 350
Material
Low Temp Buna N
Peroxide Cured Buna N (90 Duro)
Teflon®
Viton®
Temp Range (˚F)
-50 to 250
-20 to 275
-50 to 425
-15 to 400
*Depends on media.
Performance Loss Curves • Wafer Check Valves Only
100
80
60
40
2"
Head Loss - Feet of Water-Normal Operation
30
3"
221/22""
5"
4"
8"
6"
12"
10"
16"
14"
20"
18"
30"
24"
42"
36"
20
10
8.0
6.0
4.0
3.0
2.0
1.0
0.8
0.6
0.4
0.3
0.2
800,000
1,000,000
600,000
400,000
Notes: 1. Curves are for water at 60 ˚F.
Flow- Gallons per Minute
2. Feet of water x .4335 = psi drop.
3. Use curves for estimating purposes only, performance is based upon ideal inlet and outlet conditions with no springs or weights.
Since spring and /or weight requirements for acceptable operation may vary from system to system, their effects must be added.
300,000
200,000
80,000
100,000
60,000
40,000
30,000
20,000
8000
10,000
6000
4000
3000
2000
800
1000
600
400
300
200
80
100
60
40
30
20
10
0.1
KF Valves
23
CIRCOR Energy is a global manufacturer of highly engineered
valves, fittings, pipeline and associated products for general,
critical and severe service applications in the Oil & Gas, Power
Generation and Process Industry markets. CIRCOR Energy
continuously develops precision technologies to improve our
customers' ability to control the flow of the world's natural resources.
Continuously Improving Flow Control. Worldwide.
Asia
I
Europe I Middle East I North America I South America
www.circorenergy.com
sales@circorenergy.com
©2015 CIRCOR Energy. All rights reserved.
KF-CHECKS-JULY-2015-2UP-CME
KF Valves reserves the right to change designs, materials, or specifications without notice or without obligation to furnish or install such changes on products previously or subsequently sold.
Inconel® is a registered trademark of Special Metals Corporation, USA • Stellite® is a registered trademark of Kennametal Stellite, Inc. • Viton® is a registered trademark of DuPont Dow Elastomers. • James Walker® is a registered trademark of
James Walker. • Teflon® is a registered trademark of DuPont. • Aflas® is a registered trademark of Asahi Glass. • Xylan® is a registered trademark of Whitford. • Enduro-Bond™ is a trademark of Energy & Environmental Services.