Material of Construction :

Body & Bonnet :
A 126 GR. B/A 216 GR. WCB/
A351 GR. CF 8/8M/CF3/3M
Seat & Disc :
Gasket :
CAF/GRAPHITE ASBESTOS/PTFE/
SP. WOUND WITH CAF/GRAPHITE FILLED
Fasteners :
C.S./B7/2H/SS 304/316

Standard of Compliance :

Valve Design :
BS 1868/DN Std. (Swing & Lift Check Valve)
API 6D (Wafer Type Check Valve)
Pressure Testing :
BS 6755 Part I (Swing & Lift Check Valve)
API 598 Wafer Type Check Valve)
Pressure-Temp. Rating :
ANSI B 16.34
Face to Face :
ANSI B 16.10 / API 6D
Flange Drilling :
ANSI B 16.5 / BS 10 Table / DN / IS Std.

Swing Type Check Valve

Check Valve
Check Valve

Dimensions (Class 150) – Swing Check

Size Inch 1” 1 1/2” 2” 2 1/2” 3″ 4″ 5″ 6″ 8″ 10″ 12″
DN 25 40 50 65 80 100 125 150 200 250 300
L 127 165 203 216 241 292 330 356 495 623 399
ØD 108 127 152.4 177.8 190.5 228.6 254 279 343 106 483
ØE 79.3 98.4 120.6 139.7 152.4 190.5 215.9 241.3 296.4 362 431.8
ØF 50.8 73 92.1 104.7 127 157.2 185.6 215.9 269.9 323.8 381
N 4 4 4 4 4 8 8 8 8 12 12
ØO 15.8 15.8 19 19 19 19 22.2 22.2 22.2 25.4 25.4

Single Plate Wafer Type Swing Check Valve

Check Valve

Dimensions (PN6/10/25/Class 150)

Size Inch 1” 1 1/4” 1 1/2” 2” 2 1/2” 3″ 4″ 5″ 6″ 8″ 10″ 12″ 14″ 16″ 18″ 20″
DN 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500
L-F to F 14 14 14 19 19 19 19 19 19 28.5 28.5 38.1 44.4 50.8 60.3 63.5
ØA 10 14 19 30 40 52 71 93 114 157 195 230 270 310 360 406
ØB 65 75 84 97 110/ 129 180 192 214 272 329 379/ 439 190/ 540/ 595/
          128*             408#   513# 560@ 6180
Test Pressure (Kg./Cm2)
Test Hydraulic
Class 150# 300# 800# PN10 PN16
Body 30 77 211 15 24
Seat 21 53 141 10 16