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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 |
Q1. Why choose us ?
1. Competitive price: our company is a professional supplier of 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. We have competitive prices and best resources in advanced production line and testing equipment, designed and manufactured according to certification of API, ISO, GOST, etc.
2. Fast delivery: the delivery time of all our machines is very fast, especially the popular Plunger Pumps and Mud Pumps, Flow line Products.
3. Warranty: after sales service is very important for construction machinery. Our company provides warranty for all machinery purchased from us. During the warranty period, we will accurately confirm the damaged parts in the shortest time and send the replacement parts to the customers by DHL or air freight in the most efficient way.
Q2. How can you guaranteed quality?
On the basis of more than 40 years of manufacturing experience,more than 30 years of export experience, high quality products with competitive price, better understanding in Chinese market, High quality after-sales service, we hope to establish business relations with your company.
Q3. Can you satisfy my special requirement?
As the manufacturer, Youlong will review the special requirement and recondition it as per request (if possible).
Q4. How about your technology after-service team available?
We have postgraduated engineer and repair machines team, and worked inconstructions machine area almost 20 years. We could give you service support on line on time, or send to Machinican to support on necessary.
Through the continuous development and unremitting efforts, on the basis of the stable domestic market, relying on the product quality, competitive price advantage and high-quality and efficient services, the company has been vigorously exploring the international market and expanding the foreign cooperation channels to export the products to the United States, Canada, Russia and other countries.
The company has established a good partnership with many internationally well-known companies by always adhering to the mission of "providing advanced products and high-quality services for the customer on the basis of customer focus", relying on the scientific management philosophy, strictly complying with the international trade rules, insisting in the contract performance, keeping promises, and fulfilling the tenet of high-quality and efficient services and win-win cooperation, to lay a solid foundation for the company's development.
The goal is to build the company into a world-class supplier of petroleum equipment and products. We welcome to establish a joint operation with all the domestic and foreign customers to strengthen the cooperation in various fields, to achieve mutual benefits and common development. The company will enhance the comprehensive competitiveness of the enterprise and strive for making greater contributions to the development of China and the world petroleum industry!
Develop, seek credibility by service, actively introduce advanced technology at home and abroad, and strive to make the products we provide create more economic benefits for users.
Thanks for your stopping.
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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Main Product:
Cementing and Fracturing Equipment ,
Gate Valve and wellhead Christmas Tree,
Plunger Pumps and Mud Pumps,
Flowline spare parts,
Solid Control Equipment,
Drilling Rigs and Workover Rigs Matching Equipment
