Silent Check Valve
PN16/PN25/Class125/Class250

Fig. 5104-Bronze Seat.
Fig. 5105-SS Seat.
Working Pressure and Temperature
Working pressure PN16/PN25/Class125/Class250.
Temperature from -10℃ to 120℃ for EPDM seat O-ring.
Temperature from -10℃ to 82℃ for NBR seat O-ring.
Temperature from -10℃ to 150℃ for Viton seat O-ring.
Flange Types
EN1092-2 PN16/PN25, ANSI B16.1 Class125,
ANSI B16.2 Class250.
Materials Specifications

Part Name

Material

EN Spec.

ASTM Spec.

Body*

Cast Iron

EN-JL1040

A126 Class B

Disc

Bronze

EN1982 CC491K

B62 C83600

Stainless Steel

BS970 304S15

A351 CF8

Seat

Bronze

EN1982 CC491K

B62 C83600

Stainless Steel

BS970 304S15

A351 CF8

Seat O-Ring

EPDM/NBR/Viton

Commercial

Commercial

Spring

Stainless Steel

BS970 304S15

AISI 304

Bushing

Bronze

EN1982 CC491K

B62 C83600

Screw

Stainless Steel

BS970 304S15

AISI 304
Note*: Body material is ductile iron when valve pressure rating is PN25 or Class250.



 
Dimensions (mm)

Size

50/2"

65/2.5"

80/3"

100/4"

125/5"

150/6"

200/8"

250/10"

300/12"

350/14"

400/16"

L

133

140

152

185

216

248

318

393

362

400

446

D

EN1092-2 PN16 Flange

165

185

200

220

250

285

340

405

460

520

580

EN1092-2 PN25 Flange

165

185

200

235

270

300

360

425

485

555

620

ANSI 125# Flange

152

178

191

229

254

279

343

406

483

533

597

ANSI 250# Flange

165

191

210

254

279

318

381

445

521

584

648