Forged steel check valve wire mouth 
 Forged steel check valve port wire, welded forged steel check valve 
 Forged steel check valve has three valve cover design form. The first is a bolt-type valve cover, according to this design form design of the valve, the valve body and valve cover bolt nut connection, spiral wound gasket (316 folders flexible graphite manufacturing) seal. Customers with special requirements can be used when the metal ring connections. The second design is the welded bonnet form, the form of valve according to this design, the body and bonnet with a threaded connection, welded seal. Customers with special requirements can be used when full penetration connection. The third is self-tight pressure valve cover, according to this design form design of the valve, the valve body and valve cover with a threaded connection, pressure from the seal ring seal. 
 There are three different valve design structure, they lift check valve, ball valve and swing check valves. 
 Check valve design structure and features 
 Check valve design and manufacturing in line with MSSP-118 and ASME B16.34. Tested according to API 598, labeled according to MSS-SP-25. 
 Following structure 
 Full bore or reduced bore 
 Lift Check Valve 
 Ball Check Valve 
 Swing Check Valve 
 Demand for built-in spring by 
 Bolt, spiral wound gasket sealed valve cover; threaded connection, seal welded bonnet and threaded pressure from tight bonnet 
 Integral seal on the Block 
 Comply with ASME B16.11 Socket side 
 Screwed Ends (NPT) comply with ANSI / ASME B1.20.1 
 Throttle valve can be transformed into type, needle, ball 

 Forged Steel Lift Check Valve 
 Standard material list 
 No. Part Name CS to ASTM AS to ASTM SS to ASTM 
 Type A105N Type F22 Type F304 (L) Type F316 (L) 
 1 Body A105N A182 F22 A182 F304 (L) A182 F316 (L) 
 2 Lift the flap valve A276 420 A276 304 A276 304 (L) A276 316 (L) 
 Flexible graphite gasket 316 3 316 folder folder PTFE 
 4 valve cover A105N A182 F22 A182 F304 (L) A182 F316 (L) 
 5 SS nameplate 
 6 Bolt A193 B7 A193 B16 A193 B8 (M) A193 B8 (M) 
 7 ball A182 F420/STL A182 F304 A182 F304 A182 F304 
 Medium water, steam, oil and other water, steam, oil and other nitric acid, acetic acid, etc. 
 Temperature -29 ° C ~ 425 ° C -29 ° C ~ 550 ° C -29 ° C ~ 200 ° C 
 Note: customer demand and other materials are available. Sealing surface material matching pieces of code within specified by the customer decisions. 
 CS = Carbon Steel; AS = Alloy Steel; SS = Stainless Steel; 
 Dimensions (mm) and weight (Kg) 
 NPS necking 3 / 8 1 / 2 3 / 4 111 / 4 11 / 22 / 
 Full bore / 3 / 8 1 / 2 3 / 4 111 / 4 11 / 22 
 L 79, 79 92 111 120 152 172 200 
 W 61 61 65 79 95 103 118 132 
 Weight bolt-type 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 

 [NextPage] 
 900Lb ~ 1500Lb 
 Forged Steel Lift Check Valve 900Lb ~ 1500Lb 
 Standard material list 
 No. Part Name CS to ASTM AS to ASTM SS to ASTM 
 Type A 105N Type F22 Type F304 (L) Type F316 (L) 
 1 Body A105N A182 F22 A182 F304 (L) A182 F316 (L) 
 2 Lift the flap valve A276 420 A276 304 A276 304 (L) A276 316 (L) 
 Flexible graphite gasket 316 3 316 folder folder PTFE 
 4 valve cover A105N A182 F22 A182 F304 (L) A182 F316 (L) 
 5 SS nameplate 
 6 Bolt A193 B7 A193 B16 A193 B8 (M) A193 B8 (M) 
 7 ball A182 F420 A182 F304 A182 F304 A182 F304 
 Medium water, steam, oil and other water, steam, oil and other nitric acid, acetic acid, etc. 
 Temperature -29 ° C ~ 425 ° C -29 ° C ~ 550 ° C -29 ° C ~ 200 ° C 
 Note: customer demand and other materials are available. Sealing surface material matching pieces of code within specified by the customer decisions. 
 CS = Carbon Steel; AS = Alloy Steel; SS = Stainless Steel; 
 Dimensions (mm) and weight (Kg) 
 NPS necking 3 / 8 1 / 2 3 / 4 111 / 4 11 / 22 
 Full bore 3 / 8 1 / 2 3 / 4 111 / 4 11 / 22 
 L 92 111 111 120 152 172 200 220 
 W 65 79 79 97 104 120 139 215 
 Weight bolt-type 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 
 [NextPage] 
 800Lb, 900Lb-1500Lb