Wellhead Check Valve
A wellhead check valve is a safety valve installed at the oil or gas wellhead to automatically prevent downhole fluids from flowing backward into surface pipelines or equipment.
Product advantages
High Pressure Resistance: The valve body is integrally forged and can withstand 2000–15000 PSI wellhead pressure.
Fast Backflow Prevention: The one-way flapper closes automatically within 0.1–0.3 seconds, reliably blocking reverse flow of well fluids.
Excellent Sealing Performance: The metal-elastomer composite sealing ring ensures zero leakage under working pressure.
Corrosion Resistance: The valve body surface is coated with an epoxy layer that resists corrosion from sulfur-containing and saline media.
Product Specification
|
Standard |
API SPEC 6A |
|
Nominal size |
1/13-16"~7-1/16" |
|
Rated pressure |
2000PSI~15000PSI |
|
Product specification level |
PSL-1 ~ PSL-3 |
|
Performance requirement |
PR1~PR2 |
|
Material level |
AA~HH |
|
Temperature level |
K~U |
Product Details
FAQ
Q: Do our wellhead check valves comply with API or ISO standards?
A: Yes, our wellhead check valves are strictly designed and manufactured in accordance with API 6A and API 5CT industry standards, and are certified under the ISO 9001 quality management system.
Q: What is the designed service life of your products?
A: Under standard operating conditions and proper maintenance, the designed service life of the core components of our check valves is typically 5 to 8 years, depending on working pressure and fluid corrosiveness.
Q: How do you perform pressure and sealing tests before shipment?
A: All check valves must pass hydrostatic shell testing and gas sealing tests, with test pressures reaching or exceeding 1.5 times the rated working pressure (WP) as required by API.
Q: How is product traceability ensured?
A: Each valve has an individual serial number and batch number, and all records-including raw material procurement, production, inspection, and testing-are archived and fully traceable.
Q: Can you customize non-standard flange sizes if required?
A: Absolutely. We can customize flanges or threaded connections of different sizes, pressure ratings, and standards based on the customer's detailed technical drawings or connection specifications.
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