API 6A standard were initially developed to cover all christmas tree and wellhead equipments but
today they are used for a large part of the upstream oil and gas industry.
Valves covered by this specification are in general components for use in upstream oil and gas
exploration, production and incorporate all the activities associated with the installation of this
equipment. They can serve the purpose of providing a control mechanism while taking returns
during drilling operations or they can also be used during other operations, including gas lift and
Equipment ranges from 2000 to 15,000 psi working pressure and in general the design can include
single or multiple completions, high and low temperatures and all types of service conditions.
6A valves general features includes in-line repairability, protected long-life seats and sealing
Native 6A design include gate, ball, swing check and piston check.
Users in general request gate valves with full bore and thru-conduit design, non-rising stem, slab
gate, floating seat ring body bushing design to provide safe dependable service. Ball valves are in
general trunnion mounted type only.
Industry requiremens for API 6A product are the most severe: reliability, high efficiency, only
trusted components can normally be considered.