API 6A Wellhead Check Valve / Non-Return Valve

Product Overview

The Top-entry check valve is a kind of flapper type check valve, it is forged by hight strength alloy steel AISI4130 75ksi, and used to stop the return flow from high pressure piping,The top-entry check valve are available in size 2 inch and 3 inch,15,000psi working pressure,with fig1502 hammer union end connection or Fig602.

Bonnet is connected with valve body with bolt. The seals include the sealing ring in the bonnet and the seal in the valve body, which makes a very small gap between valve body and bonnet, thus minimizing corrosion of corrosive medium to bolt and screw hole and reducing bolt loading.

Operation instruction

According to medium flow direction and by the flowdirection indicating plate of the valve, the valve isinstalled. As positive flowing, The medium lifts the valvecore and pass easily; If no positive medium pressure,valve core will self-shut off valve gate under self-weightand spring's tensile force, the back medium flowing stop.

Maintenances of TR Wellhead Check Valve

1. Every seal element is replaced according to itsexamination.
2. The valve should be placed in the dry and airy room,and the inlet and outlet are sealed properly.
3. When the product is stored, the end flanges shouldbe coated by oil against rust and dirt pollution.
4. The valve-core and the valve-seat must be exam-ined every in a well time. The attrition rate will decidewhether they are used by upset or are replaced.
5. There is a bit leak at a couple of seals of valve, andthe sealing-face may have scratch or wear. Renovationwill be done under face-off and ground finish.
6. As leak appears at the middle one of the valvebores, ring gasket should be replaced.

Technical Data of Wellhead Check Valve

Xi'An TianRui Petroleum Machinery Equipment Company is a professional manufacturer of drilling equipments and tools which is located in xi'an City, the centre of the triangle of Beijing, Tianjin and Shijiazhuang, enjoying convenient transportation.

Through the past ten years, our company has already established a deep strategic cooperation relation with domestic suppliers who specilizes in oil drilling equipments, and become the top level supplier of some well known large or medium sized SOEs such as CNPC and Sinopec. The products made by our company are exported to Europe, America, the Middle East, North Africa and Southeast Asia and other regions, because of which, we enjoy widespread praise among customers at home and abroad. Our mainly products: drilling rig parts, drilling equipment, solid control system, wellhead equipment, fishing tools, cementing tools. All the productions is within the standard of API and authorized by ISO9001:2000.

Competitive Advantages

1. We offer high quality products at competitive price.
2. Shortest delivery time.
3. Flexible payment terms.
4. Timely after-sale service.
5. Most of our equipment can be replaceable with international brands.
6. Our products have been exported to Argentina, Egypt, US, Australia, Romania, Pakistan, Dubai, Abu Dhabi, Iran, India, Indonesia, Vietnam, Malaysia and many other countries.