API 6A Valve: Complete Guide to Wellhead and Christmas Tree Valves
Quick Answer: API 6A covers wellhead and Christmas tree equipment. API 6A valves include gate, ball, check, and choke valves rated from 2,000 to 20,000 psi for oil and gas production. Materials meet NACE MR0175 for sour service.
API 6A vs API 6D
| Factor | API 6A | API 6D |
|---|---|---|
| Application | Wellhead, Christmas tree | Pipeline valves |
| Pressure | 2,000 – 20,000 psi | Class 150 – 2500 |
| Materials | AA-HH (sour service) | Standard carbon/SS |
See our API 6A valve range.
Material Classes: AA (non-sour, carbon), BB (non-sour, SS trim), CC (sour, carbon controlled hardness), DD-FF (sour, CRA materials). PR2 certification is highest testing level.
FAQ
Q: What is PR2 certification?
A: Performance Requirement 2 — highest API 6A testing including cyclic pressure/temperature. Required for critical wellhead services.
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