API 6A Tree Cap Assembly

Top connector providing controlled access to the Christmas-tree bore and optional pressure-gauge connection.

PRODUCT OVERVIEW

Purpose and technical function

A tree-cap assembly closes the upper tree bore while retaining access for pressure observation and well-service operations. The typical assembly includes a flanged body, blanking plug, hammer nut, circlip and O-ring; the internal lifting thread and gauge provision are selected to the approved tree interface.

Technical features

Removable blanking plug
Hammer-nut access arrangement
Optional pressure-gauge port
Internal tubing lifting thread
Replaceable secondary seals

Typical applications

Christmas-tree top closure
Tree-bore access
Pressure monitoring
Well-service preparation

TECHNICAL DATA

Selection and supply basis

Reference sizes	2-1/16 in to 7-1/16 in
Reference pressure range	2,000 to 20,000 psi
PSL	PSL 1 through PSL 4
Temperature range	K through U (-60 °C to 121 °C)
Service basis	Standard or sour service, with metallurgy, hardness, seals and trim confirmed against the approved fluid composition
Inspection and testing	Material traceability, dimensional inspection, NDE and pressure/functional testing according to the approved ITP
Documentation	Datasheet, drawings, MTRs, NDE and pressure-test records as specified in the purchase order

Supply positioning

Energy Equipment International supplies this equipment against approved project requirements. Manufacturing, monogram and performance claims apply only when confirmed in the selected supplier’s approved documentation.