In pneumatic valve procurement detailed technical requirements, coordination with manufacturer agreement, procurement contract as pneumatic valve attachment is very necessary, the electric valve manufacturer to introduce the pneumatic valve installation and use of the

the valve installation and use

( 1) Pneumatic valve before install and use, should be checked and switch before installation of valve operation test. Only in running action under the condition of normal, can install and use.

( 2) The installation of the pneumatic valve as far as possible make the valve and piping flange concentric, and fixed support. Cannot make ball Industrial Valves by other external force, so as to avoid the damage of valve sealing and deformation of the valve. Cause damage to valves and valve switch block and cannot be used.

( 3) After installation, for pneumatic valves should be tested, pressurize pneumatic actuators to rating, the pressure of 0. 4 to 0. 7 mpa, to switch test of pneumatic ball valve, observe the opening and closing of the valve. Should be flexible rotation, no jam phenomenon. On the switch card resistance phenomenon may get up steam, if any, repeatedly switch valve to the switch can be flexible.

( 4) Pneumatic valve installation and debugging switch mode, use first hand gear ( Manual button on the solenoid valve) After debugging, action normal electricity debugging.

( 5) Periodically maintenance of the pneumatic valve stem rotation, should be three months refueling ( The oil) At a time. Regularly for pneumatic execution units and cooperate with the use of air filters, water, sewage. Under the condition of normal check, six months maintenance once a year.

( 6) To ensure that the gas ball valve and pneumatic components supplied by the power source must be clean, without oil and water as much as possible. Cleanliness should be less than 0. 4 microns.

( 7) Before access to the source, must clean gas supply pipe, air interface and switch device, in case due to line don't clean with dirt and sediment into pneumatic execution units and cause failure.

( 8) Pneumatic actuators, solenoid Industrial Valves, the locator, filters, pressure reducing valve, such as connection, can use a brass or nylon tube, in order to prevent dust and noise reduction, vent or silencing throttle valve should be installed muffler.

the working principle of pneumatic valves

pneumatic valve is the use of compressed air into the pneumatic actuator drives the piston movement, rotation or movements torsion shaft to drive the stem drive a pneumatic control valve.

is divided into pneumatic valve, intelligent external regulation of single and double action of three, single acting pneumatic actuator driven by a spring inside the piston structure, there are two principles of open and closed, both for air or gas, gas free to enter by the springs forces the pistons to close the valve, this principle is always closed. When gas into the cylinder valve is closed, expired by spring bring the piston valve is opened, the structure is open.

when the choose and buy should pay attention to avoid spring compression for a long time. The principle of double-acting is gas-off, double-acting pneumatic Industrial Valves need to match two five-way solenoid valve, when the porosity gas into A cylinder piston rotating torque valve closed, open the valve of gas porosity by B port A period of disconnected at the same time, the piston driven torque valve opens.

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