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Forged Steel Check Valve-SW & Thread

Forged Steel Check Valve-SW & Thread

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  • Forged Steel Check Valve-SW & Thread
  • Forged Steel Check Valve-SW & Thread
  • Forged Steel Check Valve-SW & Thread
  • Forged Steel Check Valve-SW & Thread
valve cover screw connection

spring loaded to ensure that even in the low-pressure sealing performance and the same good
Bolt type piston check valve standard material specifications (Class 150Lb~800Lb)
NO. Part Name CS to ASTM AS to ASTM SS to ASTM
Type A105 Type F22 Type F304(L) Type F316(L)
1 Body A105 A182 F22 A182 F304(L) A182 F316(L)
2 Piston Disc A276 410 A276 304 A276 304(L) A276 316(L)
3 Gasket Corrugated SS + graphite SS + PTFE
4 Bonnet A105 A182 F22 A182 F304 L A182 F316(L)
5 Nameplate SS
6 Bolt A193 B7 A193 B16 A193 B8M A193 B8M
7 Ball A182 F304 A182 F304 A182 F304 A182 F304
Suitable Medium W.O.G. etc W.O.G. etc HNO3CH3OOH etc
Suitable Temperature -29℃~ 425℃ -29℃~ 550℃ -29 ℃~180℃

Note: Other materials are available upon request.

Bolt type piston check valve dimensions (mm) and weights (kg)
NPS Reduced. 3/8 1/2 3/4 1 1-1/4 1-1/2 2  
Full   3/4 1/2 3/4 1 1/4 1-1/2 2
L 79 79 92 111 120 152 172 200
H 61 61 65 79 95 103 118 132
Weights Bolted 1.4 1.2 1.5 3.1 3.9 5.6 8.9 12.5
Welded 1.1 1.0 1.2 2.9 3.3 4.9 8.1 10.9


Bolt type piston check valve standard material specifications (Class 900Lb~1500Lb)
NO Part Name CS to ASTM AS to ASTM SS to ASTM
Type A105 Type F22 Type F304(L) Type F316(L)
1 Body A105 A182 F22 A182 F304(L) A182 F316(L)
2 Piston Disc A276 420 A276 304 A276 304(L) A276 316(L)
3 Gasket Corrugated SS + graphite SS + PTFE
4 Bonnet A105 A182 F22 A182 F304 L A182 F316(L)
5 Nameplate SS
6 Bolt A193 B7 A193 B16 A193 B8M A193 B8M
7 Ball A182 F304 A182 F304 A182 F304 A182 F304
Suitable Medium W.O.G. etc W.O.G. etc HNO3,CH3OOH etc
Suitable Temperature -29℃~425℃ -29℃~550℃ -29℃~180℃


Bolt type piston check valve dimensions (mm) and weights (kg)
NPS Reduced 3/8 1/2 3/4 1 1-1/4 1-1/2 2  
Full   3/8 1/2 3/4 1 1/4 1-1/2 2
L 92 111 111 120 152 172 200 220
H 65 79 79 97 104 120 139 215
Weights Bolted 1.6 3.4 3.3 5.5 6.0 9.2 12.9 16.2
Welded 1.3 3.2 3.1 4.8 5.4 8.5 11.2 14.3

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