Product Introduction
High-performance axial flow check valves arewidely used in pipelines such as oil and natural gas to prevent fluid backflow.The double-seal valve seat structure can make the valve reach zero leakage; thevalve body and the valve seat ring design adopts the venturi streamlined runnerdesign; the valve flap surface design adopts the spherical or full arc shapedesign; the valve body support frame tail adopts Conical structure; thepre-compression spring pushes the valve flap to act on the valve seat to formthe initial pre-tightening force, which plays a role in regulating the changeof the fluid, and can slow down the opening and closing speed of the valve, andrealizes through the guide rod and the guide sleeve. The valve is opened andclosed to eliminate or reduce the water hammer caused by the check valveclosing too fast, reduce the noise, form a silent effect, and at the same timehave the advantages of reducing pressure drop and rapid response.
Production Design Specification
Design&Manufacture：API 6D、ANSI B16.34；GB/T 21387
End to End：API 6D、ANSI B16.10；GB/T 21387
Connection：ASME/ANSI B16.5 & B16.47a& B16.25；GB、JB、HG；JIS；EN；DIN
Inspection & Test：API 6D、API 598；GB/T 26480
Product Features
The valve body is designed for forging orcasting
Specially designed double sealing seat, zero leakage,reliable sealing
No leakage
Fire-proof design, in accordance with API 6FA
All-round lifting ear and foot design
Wide range ofapplications, metal-sealed seats for a wider temperature range
Venturi runner design to reduce pressuredrop
Guided mating surface hardening treatment,long service life
Preciselydesigned springs ensure low pressure seals and minimum pressure opening
Small water hammer phenomenon, low noise
Combination of material
Shell,disc | disc ring | seal material | guide bar |
CS、SS、DSS Forging or Casting of CS、SS、DSS
| SS,DSS | PTFE,VITON,STL | CS,SS,DSS+HF |
Product range
Nominal Size：1/2"~48"(DN15~DN1200)
Pressure Rating：ANSI/ASME 150LB~2500LB(PN16~420Mpa)
Suitable Temperature：-46~425℃
Connection method: flange, butt welding
URL : http://www.51bb00.cn
Tel : 021-67226688
Contact : Mr Cai
Contact address : No. 855, Yuegong Road, Jinshan Industrial Zone, Shanghai
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