Wafer Double Door Check Valve
PN25/PN40/Class250

Fig. 5304
Working Pressure and Temperature
Working pressure PN25/PN40/Class250.
Temperature from -10℃ to 150℃.
Flange Types
EN1092-2 PN25/PN40, ANSI B16.2 Class250.
Materials Specifications

Part Name

Material

BS Spec.

ASTM Spec.

Body

Stainless Steel

970 316S16

A351 CF8M

970 304S15

A351 CF8

Disc

Stainless Steel

970 316S16

A351 CF8M

970 304S15

A351 CF8

Seat

Viton

Commercial

Commercial

Hinge Pin

Stainless Steel

970 316S16

AISI 316

Stop Pin

Stainless Steel

970 316S16

AISI 316

Pin Retainer

Stainless Steel

970 316S16

AISI 316

Spring

Stainless Steel

970 304S15

AISI 304

Washer

PTFE

Commercial

Commercial

Gasket

Viton

Commercial

Commercial
 
Dimensions (mm)

Size

A

B

C

EN1092-2 PN40 Flange

ANSI 250# Flange

EN1092-2 PN25 Flange

50/2"

106

106

106

54

66

65/2.5"

126

125

126

54

78

80/3"

141

144

141

57

90

100/4"

165

176

165

64

115

125/5"

190

211

190

70

141

150/6"

220

246

220

76

170

200/8"

287

303

280

95

210

250/10"

349

356

337

108

273

300/12"

414

417

397

143

324

350/14"

471

480

454

184

356