Before servicing the regulator, close the inlet and outlet valves before and after the regulator to relieve the pressure; be careful when reassembling to avoid damaging parts such as valve ports and membranes; check the performance of the movable parts after assembly. No flexible movement; after maintenance and assembly, perform the maintenance settings according to the venting operation method of the pressure regulator, and use soap to check all the connection and sealing parts for external leakage.
If there is no gas passing downstream of the regulator, it may be:
Insufficient inlet flow, no gas passing through the pilot, clogged filter, triggering of the cut-off device, damage to the pressure regulator membrane,
If the outlet pressure of the regulator drops, it may be:
The inlet flow is insufficient, the actual flow exceeds the design flow of the regulator, the inlet filter is blocked, the spring is broken, and the signal pipe leading from the pilot to the regulator is blocked or damaged.
The increase in pressure at the outlet of the regulator may be:
The gasket or valve seat is worn, the gasket accumulates dust, the film is damaged or broken, and the valve stem of the pressure regulator is not flexible.
The reasons for the voltage regulator vibration may be:
The connection of the pressure pipe is misplaced or does not meet the installation requirements, the amount is too low, and the diameter of the valve on the pilot is wrong.
The pressure of the regulator is not high:
The pressure regulator valve cushion expands, the valve port cannot reach the required opening, or the pilot adjustment spring is deformed, and the design pressure cannot be reached.
The pressure at the outlet of the regulator is unstable and panting:
There are many gas impurities, sudden changes in gas pressure or flow interference, high outlet pressure, large fluctuations in front pressure,
First, slowly close the outlet valve and check the pressure in the pipeline between the pressure regulator and the outlet valve. If the system is operating normally, the outlet pressure will temporarily increase due to closure, and then gradually stabilize. If the outlet pressure continues to rise, it means that the pressure regulating valve port cannot be sealed, causing system abnormalities. At this time, the regulator should be closed.