Some Model Experiments on Special Control Valves

Abstract

A description is given of some model experiments undertaken to resolve problems occurring in the design of special control valves for use in the Hydraulic Machinery Laboratory of the Mechanical Engineering Research Laboratory.

Four types are dealt with: (1) a valve to control flows varying from 1 to 30 cu. ft. per sec. in a flow-meter calibrating system; (2) a valve to control flows of up to 30 cu. ft. per sec. in an open pump testing rig with a maximum input of 350 h.p.; (3) a valve to control flows varying from 1 to 20 cu. ft. per sec. in a closed pump research rig with a maximum power input of 350 h.p.; and (4) a hydraulically-balanced in-line valve to control flows varying from 1 to 15 cu. ft. per sec. in a service supply.