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Model No.: DN15~DN300
Brand: Youlong energy
Types Of: Metal Check Valves
Support Customization: Oem
Place Of Origin: China
Application: General
Medium Temperature: High Temperature, Medium Temperature, Normal Temperature
Flow Medium: Gas, Water, Oil, Acid
Structure: Check
| Selling Units | : | Piece/Pieces |
| Package Type | : | Wooden case |
| Picture Example | : |
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National standard lift check Valve
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.
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
▲Simple structure, convenient manufacture and maintenance.
▲ The sealing surface is not easy to wear and scratch. There is no relative sliding between the valve disc and the sealing surface of the valve body during opening and closing, so the wear and scratch are not serious, the sealing performance is good, and the service life is long.
▲ The fluid resistance is large, because the medium channel in the valve body is zigzag, the fluid resistance is large, and the power consumption is large.
▲The medium can only flow in one direction and cannot change the flow direction.
Specifications and parameters
Nominal size: DN50 ~ dn400
Nominal pressure: PN16 ~ pn420
Design standard: GB / T 12235
Structure length: GB / T 12221
Connecting end: GB / T 9113, Hg / T 20592, GB / T 12224
Inspection standard: GB / T 26480
Applicable media: water, oil, gas, nitric acid, acetic acid, etc
Service temperature: - 29 ～ 593 ℃
Common materials: valve body: WCB, wc6, wc9, CF8, CF8M, CF3, cf3m, etc;
Sealing surface: 13Cr, STL, 304, 316, etc.
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.
Product Name 6A Swing Check Valve, Lift Check Valve, One-Way Valve, Non-Return Valve Material Class AA-FF Material AISI 4130 (Integral Forged) Working Media Crude oil and natural gas Standards Applied 6A, 16C, NACE MR0175 Working Pressure 2000 ~ 15000psi End Connection 6A Flange Performance Requirement PR1-2 Product specification level PSL1-4 Nominal Bore Diameter 1-13/16″ – 7-1/16″ Temp Class L, P, R, S, T, U, V Paint Color Red or Customized Application Mud Choke Manifold, Kill Manifold , Wellhead Christmas Tree Connection
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.
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