Keystone Series GR Resilient Seated Butterfly Valves
GRF (ISO)
A heavy duty double flanged concentric design resilient seated butterfly valve
Features
General application
Technical data
These valves are for water or air service where
a drop-tight shut-off and double flanged body
are required.
Pressure (bar):
10 bar DN 600-1800
End of line (bar):
6 bar DN 600-1800
Vacuum service (bar):0.4 bar
Temperature (°C):
-28 to +160
Sizes (DN):
600-1800
• Double flanged body design with face-to-face
dimensions, according to EN 558 Series 20,
API 609 and AWWA C504 short.
• Designed according to EN 593 and API 609.
• The seat is field replaceable and fully isolates
the body and shaft from the flow.
• Primary shaft sealing exceeds the pressure
rating of the valve and prevents leakage
through shaft area to atmosphere.
• A secondary shaft sealing provides back-up
safety.
• A molded-in O-ring in the seat for flange
sealing eliminates the need for gaskets.
• Shaft seals prevent moisture penetrating into
the shaft area.
• Rounded polished disc edge gives full
concentric sealing, lower torques, longer seat
life and drop-tight shut-off.
• Extended body neck allows for pipe insulation.
• Actuator flange according to ISO 5211.
• Top and bottom shaft bearings for optimized
support and minimum friction and decreased
torque.
• Top bushing absorbs actuator side thrust
loads.
• All valves comply to Pressure Equipment
Directive (97/23/EU) Module B1 + D,
CE Marking.
• Available approvals: ABS, NSF/ANSI STD 61.
Flange
accommodation:
PN 10
ASME 125/150
AWWA C207 Table B/D/E
JIS 10K
AS4087 PN 16
AS2129 Table D/E
Flange facing:
Flat face (standard)
Raised face (option)
www.pentair.com/valves
© 2012 Pentair Ltd. All Rights Reserved.
VCTDS-06275-EN 14/07
Keystone Series GR Resilient Seated Butterfly Valves
GRF (ISO)
Parts list
DN 600-1000
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
11
14
10
13
12
16
3
15
Description
Body
Disc
Shaft
Seat
Disc screw
Disc screw O-ring
Plug
Plug circlip
Plug O-ring
Bushing
Body circlip
Shaft circlip
Body O-ring
Shaft O-ring
Bearing
Parallel key
Qty
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4
1
4
2
1
6
5
15
9
7
8
Material specification
Part name
Body
Disc
Shaft
Seat
Disc screw
Disc screw O-ring
Plug
Plug circlip
Plug O-ring
Bushing
Shaft/Body circlip
Shaft/Body O-ring
Bearing
Material
Ductile iron
316 stainless steel
304 stainless steel
Duplex
Aluminium bronze
Nickel aluminium bronze
Ductile iron CTD
431 stainless steel
Duplex
Super duplex
EPDM
NBR
Fluoroelastomer (FKM)
Duplex
EPDM
NBR
Fluoroelastomer (FKM)
Carbon steel
Stainless steel
NBR
Polyester
Stainless steel
NBR
PTFE/steel
Designation
GJS-400-15
GX5CrNiMo19-11-2
GX5CrNiMo19-10
GX2CrNiMoN22-5-3
CuAl10Fe2-C
CuAl10Fe5Ni5
GJS-400-15
X17CrNi16-2
X2CrNiMoN22-5-3
X2CrNiMoN25-7-4
EN/DIN mat.no
EN JS-1030
EN 1.4408
EN 1.4308
EN 1.4470
EN CC331G
EN CC333G
EN JS-1030
EN 1.4057
EN 1.4462
EN 1.4410
X2CrNiMoN22-5-3
EN 1.4462
Remark
Dual certified to ASTM A536-65-45-12
Comparable with CF8M
Comparable with CF8
Comparable with BS 1400 AB2
CTD = Epoxy coated, max. temp. 120°C
Similar to ASTM A276/Gr. 431
(optional)
Food grade
Food grade
2
Keystone Series GR Resilient Seated Butterfly Valves
GRF (ISO)
DN 1050-1800
10
14
13
6
12
16
17
18
3
11
1
15
4
2
Parts list
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Description
Body
Disc
Shaft
Seat
Bottom shaft
Through bolt
Bottom cover
Bottom cover screw
Bottom cover O-ring
Bushing
Bushing cover
Shaft circlip
Body O-ring
Shaft O-ring
Bearing
Parallel key
Parallel key disc shaft
Bushing cover screw
Lock nut
Qty
1
1
1
1
1
1
1
4
1
1
1
1
1
1
4
1
2
4
1
5
15
9
7
8
19
Material specification
Part name
Body
Disc
Shaft
Seat
Through bolt
Bottom cover
Bottom cover screw
Bottom cover O-ring
Bushing
Bushing cover
Shaft circlip
Shaft/Body O-ring
Bearing
Bushing cover screw
Lock nut
Material
Ductile iron
316 stainless steel
304 stainless steel
Duplex
Aluminium bronze
Nickel aluminium bronze
Ductile iron CTD
431 stainless steel
Duplex
Super duplex
EPDM
NBR
Stainless steel
Ductile iron
Steel class 8.8 - Zinc plated/coated
NBR
Polyester
Steel
Stainless steel
NBR
PTFE/steel
Steel class 8.8 - Zinc plated/coated
Steel class 8 - Zinc plated/coated
Designation
GJS-400-15
GX5CrNiMo19-11-2
GX5CrNiMo19-10
GX2CrNiMoN22-5-3
CuAl10Fe2-C
CuAl10Fe5Ni5
GJS-400-15
X17CrNi16-2
X2CrNiMoN22-5-3
X2CrNiMoN25-7-4
EN/DIN mat.no
EN JS-1030
EN 1.4408
EN 1.4308
EN 1.4470
EN CC331G
EN CC333G
EN JS-1030
EN 1.4057
EN 1.4462
EN 1.4410
GJS-400-15
EN JS-1030
Remark
Dual certified to ASTM A536-65-45-12
Comparable with CF8M
Comparable with CF8
Comparable with BS 1400 AB2
CTD = Epoxy coated, max. temp. 120°C
Similar to ASTM A276/Gr. 431
(optional)
Food grade
Food grade
3
Keystone Series GR Resilient Seated Butterfly Valves
GRF (ISO)
DN 600-1000
4 blind holes threaded
Valve dimensions (mm)
Shaft
Size
(DN)
A
B
C
D
E
F
J
L
M
N
Q (1)
T
YY
G
Key
Bolt
circle
600
700
750
800
900
1000
585
684
734
784
884
984
825
925
995
1060
1175
1290
500
570
605
640
715
780
154
165
190 (3)
190
203
216
210
210
210
300
300
350
70
80
90
90
100
129
456
518
551
583
659
706
6
6
6
6
6
6
651
754
810
857
957
1057
130
130
130
200
200
230
569
669
714
767
867
968
41
38
43
43
47
50
670
775
835
880
980
1081
60
70
70
70
80
90
18 x 11
20 x 12
20 x 12
20 x 12
22 x 14
25 x 14
165
165
165
254
254
298
Top plate drilling
No.
Holes
holes
α
dia.
4
4
4
8
8
8
45˚
45˚
45˚
22.5˚
22.5˚
22.5˚
22
22
22
17.5
17.5
22
U (4)
Adapt.
code
Weight
(kg) (2)
40
40
40
48
48
48
F16
F16
F16
F25
F25
F30
227
293
360
430
552
732
Notes
(1) ‘Q’ dimension is the minimum allowable pipe or flange inside diameter at the centered body face to protect
the disc sealing edge against damage when opening the valve.
(2) Weight may vary depending on trim materials used.
(3) EN 558 standard allows for both 165 & 190 mm face to face on DN 750. FTF of 190 mm is standard with
165 mm FTF as an option. Consult factory for availability.
(4) Tap depth.
4
T
mm
J
mm
C
mm
G
mm
R
mm
F
mm
TopplateSize
ISO521 1
E
mm
P
mm
N
mm
230
230
230
260
260
260
260
260
300
PCD
mm
298
298
298
356
356
356
a 356
356
406
Hole dia
mm
22
22
22
33
33
33
33
33
39
8
8
8
8
8
8
8a
8
8
1082
165
1209
185
100 F30 106
100 F30415106
110 F35415117
130 F35415138
140 F35475148
140 F35 148
160 F35 169
Weight
kg
735
855
1025
1406
1421
1786
1863
2243
2828
Key width
mm
25
28
28
28
32
36
36
36ØG
40
Key height Key length
mm
mm
110
14
16
110
16
125
16
160
160
18
160
R 20
20
160
20
160
R
22
180
ØG
350130
45165
415
45165
415
45165
415
54165
415
415165
475185
45
54
F35 260
F35 300
45356
54406
α
Weight Key width Key heigh
kg
mm
mm
°
22, 5 PCD 735Hole dia 25 No
14 α
α
Weight Key width
No
22, 5 mm 855 mm kg 28
mm16 °
°
22, 5 298 22,
1025
22,
5 22 73528 8 25 16
8
22, 5 298 22,
1406
22,
5 22 85528 8 28 16
8
22, 5 298 22,
1421
22,
5 22 102532 8 28 18
8
22, 5 356 22,
1786
22,
5 33 140636 8 28 20
8
22, 5 356 22,
1863
22,
5 33 142136 8 32 20
8
22, 5 356 22,
2243
22,
5 33 178636 8 36 20
8
22, 5 356 22,
2828
22,
5 33 186340 8 36 22
8
8 36 22,
8 356 22, 5 33 2243
8 40 22,
8 406 22, 5 39 2828
R
ØG
L
L
mm
6
6
6
6
a
6
6
6
6
9
ØN
P
mm
30
30
30
45
45
45
45
45
54
T
T
E
mm
350
350
350
415
415
415
415
415
475
1185
148
1290
169
845
130
895
165F35
918
165F35
989
165F35
1038
165F35
8
N
Hole dia L
mmmm8 mm
230 228 6
230 228 6
230 228 6
260 338 6
260 338 6
260 338 6
260 338 6
260 33
6
300 39
9
B
M
YY
A
Q
B
B
YY
A
M
A
Q
Q
C
C
C
L
4 blind holes threaded
F
α
°
22, 5
22, 5
22, 5
22, 5
22, 5
22, 5
22, 5
22, 5
22, 5
D
D
TopplateSize
ISO521 1
F30
F30
F30
F30
F35
F35
F35
F35
F35
F
mm
115
115
130
165
165
165
165
165
185
2032
1082
2195
1209
870
106
165
975
106
165
1010
117
165
1080
138
185
1150
148
P
No
D
R
mm
95
106
106
106
117
138
148
148
169
T
G
mm
90
100
100
100
110
130
140
140
160
45100
138
46100
148
46110
148
47,130
5
169
49140
50140
52160
1510
845
130
1685
895
140
1745
918
140
1855
989
160
1910
1038
P
1273,5
870
989
1416,5
975
1038
1470,5
1010
1082
1571,5
1080
1209
1680,5
1150
1753,5
1185
1874,5
1290
No
Hole dia
mm
22
PPCD
22
mm
mm
22
30298
33
30298
33
30298
33
45356
33
45356
33
45356
39
45356
ØE
1664
1753,5 1736
2032
1785
1874,5 1857
2195
113745
1080
1256
46
1150
1338
46
1185
1417
47,
5
1290
1544
49
158550
171152
ØN
1256
1510
47, 5
1399
1685
49
1453
1745
50
1554
1855
52
1663
1910
PCD
1184
1273,5
1855
1327
1416,5
1910
1381
1470,5
2032
1482
1571,5
2195
1591
1680,5
ØE
66
1736
72
1857
276
1137
1571,5
381
1256
1680,5
280
1338
1753,5
381
1417
1874,5
318
1544
457
1585
457
1711
ØN
457
457
48
1256
1417
54
1399
1544
56
1453
1585
60
1554
1711
64
1663
PCD
mm
E 298
L
298
mm
mm
350298
6
350356
6
350356
6
415356
6
356
4156
415356
6
415406
6
4156
4759
ØE
165 0
DN 1050-1800
180 0
120 0
1184
15540
135
1327
16630
140
1381
17360
150
1482
1857
160
15910
165 0
1664
180 0
1785
276
1482
381
1591
280
1664
381
1785
318
PCD
48
381
54
318
56
457
60
457
64
66
72
PCD
120 0
60 0
135
64 0
140
66 0
150
72 0
160
150 0
160 0
165 0
180 0
N
L
mm
mm
230
6
TopplateSize
P
N
230
ISO521mm
16
mm
230
6
30 F30 230
6
260
F30
30
230
6
260
30 F30 230
6
260
45 F30 260
260
6
45 F35 260
260
6
45 F35 260
300
9
45 F35 260
F
B
mm
F
YY
mm
L
Q
mm
M
mm
P
A
mm
YY
D
mm
M
NPS
in
ØE
R
J
J
F
L
J
ØG
P
KEYSTONE
C
Shaft
J
A
1060
1083
1184
1327
1381
1482
1591
1664
1785
B
1345
1405
1510
1685
1745
1855
1910
2032
2195
C
780
815
870
975
1010
1080
1150
1185
1290
D
251
254
276
381
280
381
318
457
457
E
350
350
350
415
415
415
415
415
475
KEYSTONE
All information hereon is of a proprietary nature
confidential and the prop erty of Pen tair Valves &
Controls B.V. loaned to others for expres se d
purposes onl y and sh all not be reprodu ced or
disclosed wi thout written consen t of the comp any.
B
YY
A
M
D
D
Valve dimensions (mm)
Size
(DN)
1050
1100
D
1200
1350
1400
1500
1600
1650
1800
All information hereon is of a proprietary nature
confidential and the prop erty of Pen tair Valves &
Controls B.V. loaned to others for expres sed
purposes onl y and sh all not be reprodu ced or
disclosed wi thout written consen t of the comp any.
All information hereon is of a proprietary nature
confidential and the prop erty of Pen tair Valves &
Controls B.V. loaned to others for expres sed
purposes onl y and sh all not be reprodu ced or
disclosed wi thout written consen t of the comp any.
KEYSTONE
D
Q
PCD
DN
mm
1149,5 A1345 M42, 5
105 0
251
1060
1132
1015
780
95
350 R
30 F
42
Keystone
Valves
QSeated
J F F30
DN
NPS
YY745
B 90
TG
C115
G
Q
TopplateSize
J Butterfly
DN
NPS
DSeries
A
MGRD Resilient
YY
B
T
C
R
E
1172,5
42, 5 mm
1155
115
110 0
44
254
1083
1038
1405 mm
815 mm
777
100 mm
106
3501mm mm
30mm
mm
mm
mm
mm
mm
mm
in
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mmF30 mm
ISO521
in
1273,5 1060
45 1015
120 0
48 0 276
1184
12560
1137 251
1510 1132
870
845 1345
100 42,106
30115
5
105
780130
745
42
1149,5
42,
5 1149,5
105
251
1060
1132
1015
1345
780
745
90
95
115F30 90 F3035095 350
42
1416,5 1083
54
45115
46 1038
975
100 42,100
106
165
GRF
135 0 (ISO)
1327
13990
1256 254
1685 1155
895 1405
5
110
44
815
777
1172,5
42,
5 1172,5
1155
115F30 100 F30415106 350
110 0 381
44
254
1083
1038
1405
815
777
106
1470,5
140 0
56
1745
46
1010
110
165
415
45
280
1381
1453
1338
918
117
F35
F
J
L
M
115 745 KEYSTONE
6 1132
115 777 6 1155
130 845 6 1256
165 895 6 1399
165 918 6 1453
165 989 6 1554
165 1038 6 1663
165 1082 6 1736
185 1209 9 1857
N
230
230
230
260
260
260
260
260
300
All information hereon is of a proprietary nature
confidential and the prop erty of Pen tair Valves &
Controls B.V. loaned to others for expres sed
purposes onl y and sh all not be reprodu ced or
disclosed wi thout written consen t of the comp any.
P
30
30
30
45
45
45
45
45
54
Q 1015
1038
1137
1256
1338
1417
1544
1585
1711
(1)
R
95
106
106
106
117
138
148
148
169
T
42.5
42.5
45
46
46
47.5
49
50
52
YY
1149.5
1172.5
1273.5
1416.5
1470.5
1571.5
1680.5
1753.5
1874.5
G
90
100
100
100
110
130
140
140
160
Key
25 x 14
28 x 16
28 x 16
28 x 16
32 x 18
36 x 20
36 x 20
36 x 20
40 x 22
Key
L
110
110
125
160
160
160
160
160
180
Top plate drilling
Bolt
No.
Holes
circle holes α
dia.
U (3)
298
8
22.5 22
42.5
298
8
22.5 22
42.5
298
8
22.5 22
45
356
8
22.5 33
46
356
8
22.5 33
46
356
8
22.5 33
47.5
356
8
22.5 33
49
356
8
22.5 33
50
406
8
22.5 39
52
Adapt.
code
F30
F30
F30
F35
F35
F35
F35
F35
F40
W (2)
(kg)
735
855
1025
1406
1421
1786
1863
2243
2828
Notes
(1) ‘Q’ dimension is the minimum allowable pipe or flange inside diameter at the centered body face to protect
the disc sealing edge against damage when opening the valve.
(2) Weight may vary depending on trim materials used.
(3) Tap depth.
5
Keystone Series GR Resilient Seated Butterfly Valves
GRF (ISO)
Torque application factor categories
Application I
Clean liquid lubricating media (water, clean
oils, lube oil, mineral oil, etc.); and with no
deposit or chemical attack, valve operated at
least once a week.
Temperature range from 0°C to maximum
temperature rating of the elastomer seat.
Application II
Other liquid media and lubricating gases
(aqueous liquids, such as food & beverage,
water, etc.); and with minor deposit or chemical
attack, valve operated at least once a month.
Temperature range from 0°C to maximum
temperature rating of the elastomer seat.
Application III
a. Dry non-abrasive media or gases
(non-abrasive powders and dry gas); or
b. Fluids with moderate deposit or chemical
attack; or
c. Valves operated less than once a month.
Temperature range from 0°C to maximum
temperature rating of the elastomer seat.
Application IV
a. Dry abrasive media and degreasing
applications (sand, cement, silicone free,
oxygen cleaned); or
b. Liquids with severe deposit; or
c. Valves not frequently operated (once a year).
All above with temperature range from -10°C to
maximum temperature rating of the elastomer
seat.
Valve seating and unseating torques (Nm)
Differential
pressure (bar)
I*
3.5
7
10
3.5 (U/C)
II*
3.5
7
10
3.5 (U/C)
III*
3.5
7
10
3.5 (U/C)
IV*
3.5
7
10
3.5 (U/C)
Notes
1. For applications with temperatures above or below
the guidelines above, please consult factory.
2.For dry service valves it is suggested to use U/C
discs (reduced diameter) when service conditions
are less than 3.5 bar.
Valve size (DN)
1050
1100
1200
600
700
750
800
900
1000
1350
1400
1500
1600
1650
1800
1700
1979
2373
1020
2494
2943
3575
1497
2967
3521
4302 (1)
1780
3495
4169
5120
2097
4422
5275
6479
2653
5831
7022
8704
3498
6428
7742
9595
3857
7505
9114
11385
4503
8931
10846
13548
5359
11982
14657
18433
7189
12885
15762
19824
7731
16469
20393
25935
9881
19692
24511
31316
11815
20942
26066
33304
12565
27338
34331
44212
16403
1877
2153
2542
1126
2736
3180
3804
1642
3245
3793
4565 (1)
1947
3811
4479
5419
2287
4822
5667
6858
2893
6325
7506
9172
3795
6973
8275
10111
4184
8103
9699
11951
4862
9643
11542
14222
5786
12882
15538
19286
7729
13854
16710
20741
8312
17581
21481
26988
10548
20957
25749
32514
12574
22287
27383
34578
13372
28938
35898
45728
17363
2055
2328
2710
1233
2978
3417
4034 (1)
1787
3523
4065 (1)
4828 (1,2)
2114
4127
4788
5719 (2)
2476
5222
6059
7237
3133
6819
7990
9640
4091
7517
8808
10627
4510
8701
10285
12518
5221
10354
12239
14896
6212
13782
16420
20139
8269
14822
17658
21658
8893
18692
22569
28041
11215
22221
26987
33713
13333
23632
28699
35852
14179
30539
37465
47244
18323
2322
2589
2963
1393
3341
3772
4378 (1)
2005
3940
4473 (1)
5223 (1,2)
2364
4601
5252
6168 (2)
2761
5822
6646
7805
3493
7560
8715
10342
4536
8334
9608
11401
5001
9598
11162
13367
5759
11421
13283
15907
6853
15133
17742
21418
9080
16274
19080
23034
9765
20359
24202
29621
12216
24118
28844
35510
14471
25649
30674
37763
15389
32940
39815
49519
19764
Notes
3.5 U/C refers to reduced diameter disc option.
(1) Use a minimum of Class 8.8 steel bolts to connect actuator to valve.
(2) Duplex shaft not suitable for these conditions, use only 431 stainless steel or super duplex.
I* = Application I
II* = Application II
III* = Application III
IV* = Application IV
Maximum allowable shaft torques (Nm)
Shaft material
431SS (SS 1.4057)
Duplex (SS 1.4462)
Super duplex (SS 1.4410)
600
4455
3341
3824
700
6300
4725
5408
750
6300
4725
5408
800
7560
5670
6489
900
11424
8568
9806
1000
18900
14175
16233
Valve size (DN)
1050
1100
1200
16065
19680
23280
12049
14760
17460
13789
16892
19982
1350
34848
26136
29911
1400
34848
26136
29911
1500
44928
33696
38563
1600
52080
39060
44702
1650
52080
39060
44702
1800
73920
55440
63448
6
Keystone Series GR Resilient Seated Butterfly Valves
GRF (ISO)
Flowrate co-efficients - Kv values
Size (DN)
600
700
750
800
900
1000
1050
1100
1200
1350
1400
1500
1600
1650
1800
10°
20°
30°
40°
Disc opening (degrees)
50°
60°
70°
80°
90°
349
475
545
620
785
969
1068
1172
1395
1766
1899
2180
2480
2638
3139
894
1216
1396
1589
2011
2483
2737
3004
3575
4524
4866
5586
6355
6759
8043
1871
2547
2924
3327
4211
5197
5732
6290
7486
9475
10189
11697
13309
14153
16844
3357
4569
5245
5968
7553
9325
10280
11283
13428
16994
18276
20981
23871
25386
30212
5689
7744
8890
10114
12801
15803
17423
19122
22757
28802
30975
35558
40457
43025
51204
9140
12440
14281
16248
20564
25389
27656
30353
36122
45717
49167
56441
64218
68294
81275
14723
20040
23005
26174
33127
40897
50010
54886
65319
82670
88907
102061
116123
123494
146968
26357
35875
41183
46857
59303
73214
85811
94178
112079
141850
152552
175124
199252
211900
252178
30583
41626
47785
54369
68811
84953
95862
105209
125208
158466
170422
195637
222591
236721
281717
Note
Kv = The volume of water in m3/hr that will pass through a valve with a pressure drop of 1 bar at 20°C
Pressure-temperature diagram
Seat material
EPDM
Disc
material
all
NBR
all
FKM
all
* all seat materials drop tight
Body
material
DI
Size range
(DN)
600-1800
Valve function
Standard/End of Line
Std / EOL
DI
DI
600-1800
600-1800
Std / EOL
Std / EOL
Possible flange drillings
Flange drilling
EN 1092-2
ISO 2084
ASME B16.5
ASME B16.1
ASME B16.47A
AWWA C207
MSS SP44
ASME B16.47B
JIS B2210
JIS B2210
AS2129
AS4087
AS2129
600
PN 10
PN 10
Class 150
Class 125
Class 150
Table B/D/E
Class 150
Class 150
10K
5K
Table D
PN 16
Table E
700
750
N/A
N/A
800
900
N/A
-28
-20
-15
Temperature in °C
0
50 100 120
130
150
160
10 bar / 6 bar
10 bar / 6 bar
10 bar / 6 bar
Valve size (DN)
1050
1100
1200
N/A
N/A
See B16.47A
N/A
N/A
1000
1350
N/A
N/A
1400
6 bar / 4 bar
1500
N/A
1600
N/A
1650
N/A
N/A
N/A
1800
N/A
See B16.5
N/A
N/A
N/A
O
O
O
O
O
O
N/A
N/A
N/A
N/A
N/A
N/A
O
O
O
O
O
O
N/A
N/A
O
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
O
O
N/A
N/A
N/A
Notes
Standard possible for all versions
O
Optional, contact factory
N/A
Not applicable
Data is valid for flat face flanges. For raised face, please consult factory
7
Keystone Series GR Resilient Seated Butterfly Valves
GRF (ISO)
Selection guide
Example
GR
F
600
Series
GR
Body style
F
Flanged
Size (DN)
600
800
1050
1350
1600
700
900
1100
1400
1650
750
1000
1200
1500
1800
Body material
D
Ductile iron
Disc material
1
316 stainless steel
5
Ductile iron / Epoxy ctd.
2
304 stainless steel
6
Duplex
3
Aluminum bronze
N Nickel aluminium bronze
Shaft
2
431 stainless steel
6
Duplex
Seat
E
EPDM (Food grade)
N NBR (Food grade)
Flange drilling
A1 ASME 125/150
D2 DIN PN 10
AD AS4087 PN 16
J2 JIS 10K
(AS2129 Table D)
AE AS2129 Table E
AW AWWA C207 Table B/D/E
Mounting
I
ISO 5211
Actuation
B0 Bare shaft
C1 Chainwheel
G1 Gear
P1 Pneumatic DA
Special (If none leave blank)
UC Under cut disc for 3.5 bar or less pressure
NSF NSF/ANSI STD 61
P
Special body coating
MTR Material certifications
D
1
2
7
Super duplex
F
Fluoroelastomer (FKM) *
E
D2
I
B0
UC
P2 Pneumatic SR
E
Electric
Note
* Fluoroelastomer (FKM) available in size up to DN 1000 only
PENTAIR VALVES & CONTROLS
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