1. Structure of Check Valve Description

The design and production of the product completely meets the requirements of API Spec 6A: Wellhead and Christmas tree specification. In accordance with API Spec 6A specification form a complete set of equipment and used interchangeably at home and abroad.

2. Main Features of Check Valve

1) The valve is made by forging, that make it bear high-pressure.

2) The inner parts of valve is made of stainless steel, piston and disc seat covers nickel-based alloy , so it has a long working life without corrosion.

3) The special construction can avoid water hammer phenomenon.

4) The characteristic of the valve is that, good sealing performance, strong corrosion resistance, long service life, flexible switch and also can be used for regulating the flow.

3. Check Valve Images

4. Check Valve Specification

Working Pressure：2,000Psi～20,000Psi
Nominal Diameter：2-1/16 "～4-1/16 "
Working Temp. : KU (-60℃～121℃)
Working Medium：oil、gas、mud
PSL Class：PSL1～4
PR Class：PR1～2
Material Class：AA～HH
End Connection：API Spec connection

5. FAQ of Check Valve

We have organized several common questions for our clients，may help you sincerely：

①How about your company？

One of the leading manufacturers and suppliers specializing in steel pipe products in China, mainly offering four series steel pipes including welded steel pipe (ERW, 

SSAW, LSAW and square and rectangle pipe), seamless steel pipe, hot dipped galvanized steel pipe and steel pipe with 3 layer polythene coating. We can provide 

customers different specification standards e.g. ASTM A53, ASTM A106, BS1387, API 5L, API 5CT, ISO3183 and etc. Our scope of supplying covers from 1/2" to 48" for the 

outside diameter of welded pipes, and 1/8" to 20" for the seamless pipes. 

Other than steel pipes we are also capable of supplying a wide variety of pipeline accessories, steel pipe fittings; valves etc. consists of our one-stop sales. The 

integrated sales & service ensures customers with various demands an easier access for purchasing management.

②How to guarantee the quality of the products？

We have established the international advanced quality management system，every link from raw material to final product we have strict quality test；We resolutely put 

an end to unqualified products flowing into the market. At the same time, we will provide necessary follow-up service assurance.

③How long can we receive the product after purchase?

In the purchase of product within three working days, We will arrange the factory delivery as soon as possible.