Wellhead & Choke Valve — API 6A — Applicable Engineering Standards & Codes

Description

Wellhead, christmas tree and choke valve for upstream oil & gas.

API 6A / ISO 10423 Specification for Wellhead and Tree Equipment

Edition: 21st Edition (2018, A1 2021) Region: USA, Global

Wellheads, Christmas trees and surface equipment for upstream service.

Key requirements (8)

Wellhead, christmas tree and choke valve equipment for upstream oil & gas.
Pressure ratings: 2,000 / 3,000 / 5,000 / 10,000 / 15,000 / 20,000 psi.
Material classes: AA, BB, CC, DD, EE, FF, HH (increasing severity for sour/cryogenic).
Temperature classes: K, L, N, P, R, S, T, U, V, X, Y (range −75 to 350 °F).
PSL (Product Specification Level) 1 to 4 — increasing QC stringency.
Hydrotest: 1.5 × rated working pressure × 3 minutes minimum.
Sour service: NACE MR0175 / ISO 15156 compliance.
Fire-safe per API 6FA where required.

API 6FA Fire Test for Valves

Edition: 4th Edition (2020) Region: USA, Global

Fire-type testing of valves to demonstrate fire-safe performance.

ISO 10423 / API 6A Petroleum and natural gas industries — Drilling and production equipment — Wellhead and christmas tree equipment

Edition: 4th Edition (2009) Region: Global

ISO equivalent of API 6A wellhead equipment.