Check Valve
- 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.
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Check Valve
Check Valves are installed in high-pressure lines to stop the reverse flow by the automatic close of flapper or dart.
Flapper check valves include top-entry check valves and in-line flapper check valves, which allow fluids to flow towards the wellbore and prevent flowing backwards. For dart check valves, the flow will open the dart by overcoming the small spring force.
When the flow runs in the opposite direction, the spring will push the dart against the seat retainer to prevent reverse flow.
We provide both standard and reverse-flow check valves. And we have also developed check valves for sour service in accordance with NACE MR0175.
| Product Name | High-pressure check valve |
| Material Class | AA-EE |
| Working Media | Crude oil and natural gas |
| Processing Standard | 6A |
| Working Pressure | 3000 ~ 15000psi |
| Processing Type | Forge |
| Performance Requirement | PR1-2 |
| Product specification level | PSL1-3 |
| Nominal Bore Diameter | 2”, 3” |
| Connection Type | Union, BOX thread, Pin thread |
| Types | Flapper, Dart |
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Buyer’s Guide
Please send us your inquiry with detail item description or with Model number. If there is no packing demand we take it as our regular exported standard packing. We will offer you an order form for filling. We will recommend you the most suitable model according to information you offered.
We can give you really high quality products with competitive price. We have a better understanding in Chinese market, with us your money will be safe.
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Lake Petro is located in Dongying City, which is famous for Shengli Oilfield and the largest manufacturing hub of petroleum equipment in China. Following the principle of “quality first, science and technology innovated, people oriented”, every Lake Petro person is sparing no effort to provide the customers with best products and services. Our products are based on advanced production line and testing equipment, our products are designed and manufactured according to certification of ISO, GOST, etc.