My Knowledge (Shubham Mishra)

Glossary of Valve Terms ACCUMULATOR A vessel in which a gas is trapped and compressed by the liquid in a hydraulic system, thus storing energy to supply liquid under pressure to the system when needed. ACME THREAD A flat topped screw thread for power transmission. This thread has a 29° included angle between adjacent thread faces compared with the 60° angle of the U.S. standard "V" thread. ACTUATOR Device used to operate a valve using electric, pneumatic or hydraulic means. Often used for remote control or sequencing of valve operations. ADAPTER SPOOL An extension which is added to a short face-to-face valve, to conform to standard API 6D face-to-face dimensions. AGA - AMERICAN GAS ASSOCIATION A society comprising gas companies set up to achieve common goals. AISI - AMERICAN IRON AND STEEL INSTITUTE An association of steel makers which sets standards for the chemical and physical properties of steel and iron in various shapes and forms; pipe, tubing, sheet, strip, wire. ALL W