KEYSTONE KNIFE GATE VALVES
FIGURE 952 POLYURETHANE
Polyurethane lined, lugged style, bi-directional knife gate valves
FEATURES
• Bi-directional shut-off valves.
• Compact design.
• Self-aligning gland box.
• 316 S/S valve body construction for superior
corrosion resistance.
• One piece integral cast body, chest and lugs.
• Polyurethane liner bonded to the valve body.
• Wide range of valve sizes available.
• PTFE coated gate to provide a non-stick,
low co-efficient of friction to lower operating
force.
• Complies with MSS SP-81 face-to-face
dimensions.
• High flow rates with low pressure drops.
• All valves are pressure tested to MSS SP-81.
GENERAL APPLICATION
TECHNICAL DATA
The Keystone K-Nife is designed for a wide
range of applications such as:
• Pulp and paper
• Mining
• Mineral sands
• Cement handling
• Fly ash handling plants
• Coal washeries
• Bulk conveying
Size range:
DN 50 - 600 (NPS 2 - 24)
Temperature rating: 50°C (120°F) on liquid
service 60°C (140°F) on
dry service
Pressure rating:
1000 kPa/10 bar (150 psi)
at cold working pressure:
DN 350 = 700 kPa/7 bar
(NPS 14 = 100 psi)
DN 400 = 600 kPa/6 bar
(NPS 16 = 90 psi)
DN 450 = 500 kPa/5 bar
(NPS 18 = 75 psi)
DN 500 = 400 kPa/4 bar
(NPS 20 = 60 psi)
DN 600 = 300 kPa/3 bar
(NPS 24 = 45 psi)
(all non-shock ratings)
www.pentair.com/valves
© 2012 Pentair plc. All Rights Reserved.
VCTDS-01439-EN 16/02
KEYSTONE KNIFE GATE VALVES
FIGURE 952 POLYURETHANE
12
11
10
7
8
ØF
12
11
10
5
8
7
13
5
C1
13,14
C
3
9
6
9
3
6
11
2
2
1
4
4
D
B A
1
E
Note: DN 50 - 200 (NPS 2 - 8) valve illustrated.
PARTS LIST
No.
1
2
3
4
5
6
7
8
9
10
11
12
Description
Body
Gate
Gland box
Seat
Spindle
Gland packing
Bridge (DN 50 - 200 / NPS 2 - 8)
Upstand (DN 250 - 600 / NPS 10 - 24)
Pillar
Glandbox washer
Handwheel nut
Thrust washer
Handwheel
13
14
Clevis
All fasteners
Note: DN 250 - 600 (NPS 10 - 24) valve illustrated.
Ma­te­ri­al
316 S/S - Polyurethane lined
316 S/S (PTFE coated)
304 S/S
Polyurethane
303 S/S
K-LON
304 S/S
304 S/S or painted mild steel
304 S/S
Nylon
Leaded gunmetal
Nylon
S.G. Iron (rising DN 50 - 300 / NPS 2 - 12)
S/S (non rising DN 250 - 600 / NPS 10 - 24)
304 S/S
304 S/S
OPTIONS
• F738 Pneu­mat­ic actuators
• Electric actuators
• Bevel gear operators
• Chainwheels
• F459 Quick acting levers
(DN 50 - 200 / NPS 2 - 8)
• F791 So­le­noid valves
• Limit switches
• F793 Positioners
• F493 Pneu­mat­ic failsafe
• Safety guards and shrouds
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KEYSTONE KNIFE GATE VALVES
FIGURE 952 POLYURETHANE
ØF
12
11
10
ØF
5
8
7
13
C1
C1
C
9
3
C
6
2
4
B A
D
B A
1
D
E
E
Notes: DN 250 - 600 (NPS 10 - 24) valve illustrated.
Number of lugs is dependent upon flange drilling.
Notes: DN 50 - 200 (NPS 2 - 8) valve illustrated.
Number of lugs is dependent upon flange drilling.
DIMENSIONS mm (inches)
Valve
size
DN (NPS)
50 (2)
65 (2½)
80 (3)
100 (4)
125 (5)
150 (6)
200 (8)
250 (10)
300 (12)
350 (14)
400 (16)
450 (18)
500 (20)
600 (24)
Bore
A
50 (1.97)
65 (2.56)
80 (3.15)
100 (3.94)
125 (4.92)
150 (5.91)
200 (7.87)
250 (9.84)
300 (11.81)
330 (13.00)
378 (14.88)
425 (16.73)
475 (18.70)
571 (22.48)
B
92 (3.62)
108 (4.25)
127 (5.00)
157 (6.20)
186 (7.32)
212 (8.35)
270 (10.63)
326 (12.83)
380 (15.00)
452 (17.80)
480 (18.90)
540 (21.25)
585 (23.03)
692 (27.25)
Rising spindle
(closed)
(open)
C
C1
264 (10.39)
295 (11.60)
284 (11.18)
316 (12.45)
324 (12.76)
391 (15.40)
358 (14.10)
425 (16.75)
450 (17.72)
519 (20.43)
487 (19.17)
579 (22.80)
602 (23.70)
746 (29.37)
726 (28.60)
908 (35.75)
825 (32.50)
1057 (41.60)
881 (34.70)
1144 (45.04)
968 (38.10)
1281 (50.43)
1095 (43.10)
1450 (57.10)
1192 (46.93)
1598 (62.91)
1400 (55.12)
1881 (74.06)
Non-rising
C
693 (27.30)
793 (31.22)
848 (33.40)
935 (36.81)
1084 (42.68)
1181 (46.50)
1369 (53.90)
D
49 (1.90)
49 (1.90)
52 (2.00)
52 (2.00)
58 (2.25)
58 (2.25)
71 (2.75)
71 (2.80)
76 (3.00)
76 (3.00)
89 (3.50)
89 (3.50)
114 (4.50)
114 (4.50)
E
159 (6.30)
177 (6.80)
192 (7.50)
222 (8.75)
256 (10.00)
285 (11.10)
325 (13.40)
406 (16.00)
474 (11.65)
520 (20.47)
584 (23.00)
628 (24.72)
696 (27.40)
822 (32.36)
ØF
200 (8)
200 (8)
200 (8)
200 (8)
300 (12)
300 (12)
300 (12)
400 (14)
400 (14)
400 (14)
400 (14)
600 (24)
600 (24)
600 (24)
Nom. mass
manual kg
(lbs)
7 (15)
8 (18)
10 (22)
12 (26)
18 (40)
22 (48)
34 (75)
47 (101)
74 (156)
93 (191)
121 (251)
170 (361)
212 (440)
312 (660)
Kv* (Cv❖) at
full open
223 (258)
368 (425)
557 (643)
909 (1050)
1416 (1635)
2112 (2439)
4065 (4695)
6850 (7912)
9863 (11392)
11858 (13696)
15590 (18006)
20165 (23291)
25117 (29010)
36896 (42615)
NOTES
Dimension D = The face to face dimension.
Dimension E = The maximum valve or upstand clearance dimension for installation.
Kv* = the flow rate of water in m3/hr that will pass through a valve with a differential pressure of 1 bar (100 kPa) at 20°C.
Cv ❖ = the volume of water in US gpm that will pass through a valve with a differential pressure of 1 psi at 60°F.
Cv = 1.155 Kv
Dimensions are nominal.
3
KEYSTONE KNIFE GATE VALVES
FIGURE 952 POLYURETHANE
PRESSURE/TEMPERATURE RATINGS
PRESSURE/TEMPERATURE GRAPH
Temperature °F
1500
(15)
200
300
400
AS
0
ASM
E1
TM
5
A1 0
05
AS
21
29
200
E
150
500
(5)
0
0
50
Max. limit for dry service
1000
(16)
Max. limit for liquid service
Pressure kPa (bar)
JIS 1
60
Polyurethane lined valves
1000 kPa/10 bar (150 psi) at 20°C (68°F)
935 kPa/9.35 bar (135 psi) at 50°C (120°F)
(max. for liquid service)
500
100
STANDARD SEAT DETAIL
Pressure psi
100
50
100
150
200
230
250
300
Polyurethane seat
Temperature °C
TYPICAL SPECIFYING SEQUENCE
Example:
Valve size
Figure number
F952
Trim code
193
End connections
AS 2129
JIS B2210
ASME B16.5
DIN 2501
BS 4504
ASME B16.5
Trim code
193
150
F952
193
AS 2129 E
DN 50 - 600 (NPS 2 - 24)
Lugged style rising and non rising spindle polyurethane bi-directional valve
Table C, D, E metric threads
Table 5, 10
Class 125 and 150 UNC threads
Table 10, 16
PN 10 and 16
Class 125 and 150 metric threads (for N.Z.)
Body
316 S/S/P.U.
Gate
316 S/S/PTFE*
Seat
Urethane
Gland box
304 S/S
Bridge
304 S/S
Spindle
303 S/S
Packing
K-LON
NOTES
* Gates are 316 S/S, coated with PTFE.
P.U. = Polyurethane lined.
Non-rising spindle design available upon request.
To minimize risk to personnel, Pentair recommend the use of purpose built guards and shrouds.
Refer to the Pentair data sheet or consult factory for details.
PENTAIR VALVES & CONTROLS
www.pentair.com/valves
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Because we are continuously improving our products and services, Pentair reserves the right to change product designs and specifications without notice.
Pentair is an equal opportunity employer. © 2016 Pentair plc. All rights reserved.
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