The actual classification of the directional control valve
2015-06-01 by bridge
In practical applications, the directional control valve according to the different needs of the directional control valve is divided into several categories:
(1) The Gas Heater Control Valve according to the gas flow direction of the pipe, if only to allow gas to flow in one direction, this is called a one-way valve control valve, such as one-way valves, shuttle valves, etc; can alter the gas flow control valve is called valve.
(2) the directional control valve can be divided according to the control solenoid valve, mechanical valve, gas control valves, one control valve. Wherein the solenoid valve can be divided into single and double solenoid valve two; mechanical valves can be divided into a variety of ball valves, roller valves, etc; gas control valve can be divided into single air control and pneumatic control valve; human valve can into manual valve, foot valve two kinds.
(3) directional control valve according to the principle can be divided into direct-acting valves and pilot valve, direct-acting valve is to rely on manpower or electromagnetic force, air force direct realization of reversing valve required; the pilot valve is a pilot valve head and the body part 2 constitution, there is a pilot head piston driven valve body inside the valve stem to achieve commutation.
(4) The patio heater control valve can be divided into the valve 2way, 3way valve according to the working position valve stem.
(5) The directional control valve according to the number of pores on the valve to be divided, can be divided into 2port, 3port, 5port valve.