Instructions for use of pneumatic directional valve series

Instructions for use of pneumatic directional valve series

1. Direction Steps for selecting a control valve

1. Select the diameter and type of the valve according to the type of actuator controlled or the application field and occasion. {To control a double-acting cylinder, select a four-way or five-way valve;To control the single-acting cylinder, select a three-way valve;to control the flow conversion of various fluids, select a two-way or three-way valve (such as a steam valve or a water valve)};

2. Select the valve according to the use occasion and environment. Types of valves

a. For automatic control, long-distance and complex control processes, choose electronically controlled valves (that is, solenoid valves);

b. For convenient manual operation , choose manual valve or foot valve;

c. Choose mechanical valve for occasions where mechanical push direction is used;

d. Choose flammable, explosive and humid environments. Try to control the valve with air;

3. Select the voltage of the solenoid valve according to the working voltage of the valve

4. Select the switching method of the valve according to the working status

a. 2-position single coil: After power is cut off, the spool returns to its original position (such as 4V210);

b. 2-position double coil: Which end is powered, and which side is the functional position of the spool when power is cut off? Afterwards, the valve core returns to its original position (such as 4V220);

C.3 position (normally closed) double coil: When both ends are not powered, the valve core functional position is closed in the middle, which Which side is the functional position of the spool when the power is supplied to the end? After the power is cut off, the spool returns to its original position (such as 4V230C);

d. 3-position (normally open) double coil: both ends When neither power is supplied, the functional position of the valve core is in the middle, the air inlet is closed, and the pressure in the cylinder is discharged to the atmosphere. Which end is powered, and the functional position of the valve core is on which side (such as 4V230E);

e. 3-position (pressurized) double coil: When both ends are not powered, the functional position of the valve core is in the middle, and the air inlet is connected to the interfaces of both sides of the cylinder at the same time. Which end is powered, and which side of the functional position of the valve core is (such as 4V230P);

Note: The meanings and functions of the reversing valve interface letters are as follows:

A, B - working port or output port (connected to the actuator "such as cylinder" interface );

P—air inlet (connected to the air source interface);

R1 (O1), R2 (O2)—exhaust interface (connected to the muffler);

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