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About This Item


Full Description

In hydraulic power systems, power is transmitted and controlled through a liquid under pressure within an enclosed circuit. Hydraulic valves can be used to control the direction of the working fluid through the circuit. For some applications, the time required to change the direction of the fluid by energizing or de-energizing the solenoid valve is important to the fluid power system designer.

1 Scope

1.1 This standard includes a standardized procedure for defining, measuring and reporting the response time of hydraulic solenoid operated directional control valves with minimum influence from the system. Valves included are electrically controlled, either directly or with a direct-mounted pilot valve, excluding servo and proportional valves.

1.2 This standard is intended to:

a) establish a standard definition of response time;

b) provide a uniform basis to manufacturers and users of hydraulic fluid power systems for measuring and comparing the response time of hydraulic fluid power solenoid operated directional valves;

c) establish a standard means for presenting the results of response time measurements.