High-Pressure Flow Control Equipment

API 6A Studded Adapter Flange

API 6A studded adapter flanges provide transition connections between different nominal sizes, pressure ratings or flange interfaces. Sizes cover 2 1/16 in to 5 1/8 in, with working pressures from 5,000 psi (35 MPa) to 15,000 psi (105 MPa). Two-way, tee, cross and five-way studded adapter structures are available for wellhead equipment, high-pressure valves and manifold assembly.

1. Product Overview

The API 6A studded adapter flange, also known as a studded integral adapter, is mainly used for assembly connections in high-pressure manifolds, wellhead equipment, and pup joint systems.

Specifications cover 2 1/16 in to 5 1/8 in, with rated working pressure from 5,000 psi to 15,000 psi. API 6A Flanged Adapter, API 6A Flanged Tee, API 6A Flanged Cross, and API 6A Flanged Five-Way Cross structures are available.

Products are suitable for standard-temperature, low-temperature, and sour-gas service. Specification dimensions at each connection end can be customized according to field requirements.

API 6A studded adapter flange

2. Design Features

Products are manufactured according to relevant API Spec 6A requirements and are suitable for high-pressure manifolds and wellhead equipment.

The body is machined from an alloy-steel forging blank, providing high structural strength and stable pressure-bearing performance.

Sealing grooves are machined by CNC equipment, providing high dimensional accuracy and reliable sealing performance.

Multi-outlet structures can be combined according to manifold processes, facilitating high-pressure flow-system layout.

3. API 6A Studded Adapter Flange Main Technical Parameters

ModelStructural FormConnection Type on Each SideWorking PressureService Condition
2 1/16" API 6A Studded Adapter Flange, 5,000 psiAPI 6A Flanged Adapter, API 6A Flanged Tee, API 6A Flanged Cross, API 6A Flanged Five-Way Cross2 1/16″ - 5000 psi API flange5,000 psiStandard
2 1/16" API 6A Studded Adapter Flange, 10,000 psi2 1/16″ - 10,000 psi API flange10,000 psi
2 1/16" API 6A Studded Adapter Flange, 15,000 psi2 1/16″ - 15,000 psi API flange15,000 psi
2 9/16" API 6A Studded Adapter Flange, 5,000 psi2 9/16″ - 5000 psi API flange5,000 psi
2 9/16" API 6A Studded Adapter Flange, 10,000 psi2 9/16″ - 10,000 psi API flange10,000 psi
2 9/16" API 6A Studded Adapter Flange, 15,000 psi2 9/16″ - 15,000 psi API flange15,000 psi
3 1/8" API 6A Studded Adapter Flange, 5,000 psi3 1/8″ - 5000 psi API flange5,000 psi
3 1/16" API 6A Studded Adapter Flange, 10,000 psi3 1/16″ - 10,000 psi API flange10,000 psi
3 1/16" API 6A Studded Adapter Flange, 15,000 psi3 1/16″ - 15,000 psi API flange15,000 psi
4 1/16" API 6A Studded Adapter Flange, 5,000 psi4 1/16″ - 5000 psi API flange5,000 psi
4 1/16" API 6A Studded Adapter Flange, 10,000 psi4 1/16″ - 10,000 psi API flange10,000 psi
4 1/16" API 6A Studded Adapter Flange, 15,000 psi4 1/16″ - 15,000 psi API flange15,000 psi