API Swing Check Valve, Various Sizes are Available

API Swing Check Valves , Various Sizes are Available

6A Check Valve , also referred to non-return valve, or one-way valve, is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction. An important concept in check valves is the cracking pressure which is the minimum upstream pressure at which the valve will operate. We can produce both swing type check valve and lift type check valve. Available in bore sizes from 1-13/16″ to 7-1/16″ and pressure ratings from 2,000 to 15,000 PSI. The standard material is forged AISI4130 alloy. All of our Check Valves are fully designed, manufactured, and tested as per 6A and 16C standards and have been widely used on oilfield Wellhead Christmas Tree and manifolds with reliable performance.

Check Valves are installed in high pressure lines to stop reverse flow by the automatic close of flapper or dart.

We provides both standard and reverse-flow check valves. 

And we have also developed check valves for sour service in accordance with NACE MR0175.

Characteristics and features

▲Check valves are suitable for isolating completion fluid, high pressure processing and rig equipment repairing.

▲The surface of valve internal baffle is covered with nitrile-butadiene rubber to extend life.

▲The thread and the joint of ball face adopts America standard.

▲The valve is casted by hard alloy steel and adopts union connection.

▲Sealing is energized by flow fluid pressure, sealing performance gets better while pressure increasing.
▲Hard-faced sealing surface and sulfur-resistant core material assure fine performance of wear-resistant and corrosion-resistant.
▲Integral forged body with fine mechanical properties.
▲Check valve shall be hydro tested prior to delivery for safe performance.

Specifications and parameters

Group Strength Advantages:

With registered capital RMB 84.76 million, covering 220,000 square meters, 76 workshops, 1058 Staffs, 950 sets of cold and heat machining equipment, 50 sets of numerically controlled equipment, ZYZJ O&G Group has consecutively established the strategic partnership with SINOPEC, CNPC, Zhongyuan Oil Field and Shengli Oil Field, and leveraged its technical and manufacturing advantages to provide satisfactory products and solution services to customers at home and abroad.

All products are manufactured under ISO9001, ISO14001,and comply with the requirements of API spec (acquired in 1999, including API 4F、5CT、7K、8C、11AX、11B、11E） 

With professional teams experienced in the maintenance of drilling machinery,TDS,SCR equipment, we can undertake Pumping Unit oil well on-site management services.

Long-term supply accessories of Drilling Rigs, workover rigs, Mud Pump and beam pumping unit, and distribute drill pipe, drill collar, casing, tubing, special drill pipe sub etc.

We are major at Cementing and Fracturing Equipment, Gate Valve and wellhead Christmas Tree,Plunger Pumps and Mud Pumps, Flow line Products, Solid Control Equipment,Drilling Rigs and Work over Rigs Matching Equipment etc.

High quality & Steady quantity & Most competitive price will be sent for you.