The maintenance of regulator

The maintenance of regulator
A, With the gas alarm equipment (or soap) to check whether the regulator external leakage. (Note: After the residual odor emission may cause gas alarm equipment alarm.)
B, Check the closing pressure of regulator
Slowly close the regulator outlet valve, connect pressure gauge in the regulator outlet test port, and open the switch. record closed pressure value after three minutes, check whether within the normal range. It is not need to repair when gas regulator closed pressure under normal circumstances.
C, Cleaning the external of regulator.
D, Cleaning the internal of regulator.
When the gas medium containing heavier dirt, the inside of gas pressure regulator should be cleaned and maintained regularly. According gas quality and use, every 3 to 6 months, swelling or commutation rubber aging such as: valve seals, diaphragms, O-rings, etc. should be checked or replaced regularly to ensure safety and normal supply to use.
When the media is artificial gas, it is recommended maintenance cycle shortened to 1-3 months. operation and management departments should be based on gas quality, appropriate adjustments to the maintenance cycle.
E, Before repairs should shutdown the inlet and outlet valves of the regulator, vent off pressure; reloading should be careful not to damage such as valve port, film and other parts; assembled the various moving parts should be checked whether the flexible movement ; repair assembly finished, according to the method of ventilation operation to set after repairs, and use soap to check all connection sealing parts with or without external leakage.

The working principle of safety shut-off valve and safety tossing in valve

The working principle of safety shut-off valve
When the signal pressure disorders, more than (overpressure type) or below (loss of pressure type) cut-off valve pressure setting, sensors in the pneumatic membrane drives the collision block move, make the trip mechanism movement, in a closed spring, under the action of the main valve disc quickly close the valve port, to protect the role of the voltage regulator and measuring instruments and other downstream equipment.

The working principle of
As used in the main film inferior vena surge tank (stand) export pressure to tossing in the start-up pressure, it overcome the regulating spring force drives the pull rod upward movement, under the action of the lever, the stem moves down to open the main valve disc, discharge gas. When the pressure for gas emissions fell to a start-up pressure setting, stem up, under the action of the disc in a reset spring valve mouth closed.