qilong valve certficate

Forge Steel Check Valve

piston check valve
Forged steel check valve 800LB

Standard Material Specification

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 HNO 3 ,CH 3 OOH etc
Suitable Temperature -29℃~425℃ -29℃~550℃ -29℃~180℃

Note: Other materials are available upon request. CS=Carbon Steel; AS=Alloy Steel; SS=Stainless Steel; Dimension (mm) and Weight (Kg)

NPS Conv. 3/8" 1/2" 3/4" 1" 11/4" 11/2" 2"  
Full   3/8" 1/2" 3/4" 1" 11/4" 11/2" 2"
L 79 79 92 111 120 152 172 200
H 61 61 65 79 95 103 118 132
Wieght 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

Forged  check valve 900LB~1500LB Standard Material Specification

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 HNO 3 ,CH 3 OOH etc
Suitable Temperature -29℃~425℃ -29℃~550℃ -29℃~180℃

Note: Other materials are available upon request. CS=Carbon Steel; AS=Alloy Steel; SS=Stainless Steel.   Dimension (mm) and Weight (Kg)

NPS Conv. 3/8” 1/2” 3/4” 1” 11/4” 11/2” 2”  
Full   3/8” 1/2” 3/4” 1” 11/4” 11/2” 2”
L 92 111 111 120 152 172 200 220
W 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