V51DD / F51DD WAFER DOUBLE DOOR CHECK VALVE

PN16/PN25     Fig No.: V51DD16/F51DD25

FEATURES & SPECIFICATIONS
Spring loaded double door.
Rubber seat for non-slam effect.
Durable fusion bonded epoxy coated.
Comply with DIN 3202-F1.
Wafer connection to BS 4504 PN16 / EN 1092-2 PN16 / BS 4504 PN25 / EN 1092-2 PN25 / ANSI Class 150 (Specify on order).
WRAS approved option available upon request.
Applicable for Building Services, Air-Conditioning, Fire Protection, Cold Water Plumbing, Hot Water System, General Industries.
Working pressure : 16bar/25bar.
Shell test pressure (x1.5) : 24bar/37.5bar.
Seat test pressure (x1.1) : 17.6bar/27.5bar.
Working temperature : -20°C … 110°C (EPDM) / -10°C … 80°C (NBR) / -10°C … 200°C (Viton) / -10°C … 150°C (HT-EPDM)
Suitable Media : Water.

WRAS approved.

Materials

 

Part Material
Body Ductile Iron
Disc Ductile Iron
Stainless Steel 304
Stainless Steel 316
Aluminium Bronze
Sealing Ring EPDM
NBR
Shaft Stainless Steel 410
Screw Carbon Steel
Spring Stainless Steel 316
Gasket PTFE
Seat EPDM
NBR
Viton
HT-EPDM

Dimensions (mm)

DN (mm)
(inch)
40
50
2
65
80
3
100
4
125
5
150
6
200
8
250
10
300
12
350
14
400
16
450
18
500
20
600
24
700
28
800
32
L 43 43 46 64 64 70 76 89 114 114 127 140 152 152 178 229 241
D (PN16) 91 103 123 142 157 192 218 268 328 380 444 495 554 616 724 806 905
D (PN25) 103 123 142 167 192 218 279 334 399 456 512 563 623 724
D (ANSI) 103 123 129 167 192 218 279 334 409 448 512 547 604 724 824 925
D1 65 65 80 94 117 145 170 224 265 310 360 410 450 505 624 722 825
A 12 12 21.5 22.5 32 43.5 51 70.5 90 108 125 148 161.5 188 234
B 16 16 17 25 24 28 32 41 40 44 48 54 62 62 70

Note : PN25 only available for sizes DN50 … DN600.

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