Automatic switch valve operation instructions Automatic valve operation is not a lot, as long as the factory set a good opening pressure or pressure on the import and export on it. Commercial grinder, Stainless Steel Grinder, one-click grinder, Touch LED grinder, big capacity grinder Heshan Zilong Home Appliance Technology CO.Ltd , https://www.techonelfoodmixer.com
1. Safety valve The safety valve must be pressed before the installation, pressure test, set the pressure setting, and some local safety valve can only be used after testing by the local testing authority. For example, steam safety valves used in power stations require on-site verification. When carrying out the verification, it must be organized and prepared to proceed, and the division of labor should be clear. Thermal calibration application standard table, when the constant pressure value is not accurate, it should be adjusted according to regulations. The pressure section and the use pressure of the spring must be adapted. The weight should be adjusted to the constant pressure value from left to right and fixed.
When the safety valve operates for a long time, the operator should pay attention to the inspection. The inspector should avoid the outlet of the safety valve, check the sealing surface of the safety valve, and use a safety valve with a handle to open the valve with a time interval to drain the dirt and verify the flexibility of the safety valve.
2. Pressure reducing valve Before the pressure reducing valve is enabled, the bypass valve or flushing valve should be opened to clean the pipeline dirt. After the pipeline is cleaned, close the bypass valve and open the pressure reducing valve. Some steam decompression valve valves have traps in front of them, which need to be opened first, and then the cut-off valve after the decompression valve is opened slightly. Finally, the cut-off valve in front of the decompression valve is opened to observe the pressure gauges before and after the decompression valve, and the decompression is adjusted. Valve adjustment screw, so that the pressure after the valve reaches a predetermined value, then slowly open the valve after the pressure relief valve, adjust the pressure after the valve until it reaches the specified value, and then fixed the adjustment screw, cover the protective cap.
If the pressure reducing valve fails to be repaired, the bypass valve should be opened and shut off before the valve is closed. Manually adjust the bypass valve so that the pressure after the pressure relief valve is basically at or below the predetermined value, and then close the pressure reducing valve. Shut-off valve, replace or repair pressure reducing valve. Wait until the pressure relief valve is replaced or repaired before returning to work.
3. Check Valves The operation of the check valve should avoid excessive impact caused by the valve being closed, and it should also avoid rapid vibration work on the valve closure.
In order to avoid excessive shock pressure due to the closing of the valve, the valve must be closed quickly to prevent the formation of a great backflow velocity, which is the cause of the shock pressure when the valve suddenly closes. Therefore, the closing speed of the valve should be properly matched with the reduction of the downstream medium.
4. Traps Traps are valves that are easily clogged with debris such as sewage. When enabled, first open the flush valve, flush the pipe, there is a bypass pipe, you can open the bypass valve seat for a short flush, there is no flush pipe and the bypass pipe trap, you can remove the trap, open the shut-off valve after flushing, and then Close the shut-off valve, install the trap, then open the shut-off valve and enable the trap.