According to the instructions, the blind plate should be installed at the back of the valve flange, and gaskets should be installed on both sides of the blind plate to prevent damage to the flange sealing surface.
Close all valves and backwash between systems according to flow chart, add blind plate if necessary, and open all valves in the system.
Close all sampling valves in the system.
Air tightness test should be applied to instrument pressurization, flowmeter pressurization to pressure guide tube, glass plate level gauge also pressure test.
It is found that the leak point is eliminated in time after pressure relief, and the pressure is checked by pressure holding test when the pressure rises to the test pressure.
2. Inspection methods
No bubbles should appear at the joint of pressure gauge, weld joint, liquid level gauge and pump shell. If soap bubbles occur somewhere, it indicates that the leakage should be tightened or repaired after air tightness test.
Air-tightness scheme of air-tightness detection device system for air booster pump
The following contents are inspected by the air booster pump
A. Flanges and valve joints (including valve disc root, various liquid level gauges and pressure gauge joints, showers, vent valves, etc.).
B. All dismantled piping valves, flanges and instrument components.
C. The part without strength test.
D. All repaired parts.
E. Import and export of all pumps and equipment, manhole and hand hole flange parts.
F. Check the internal leakage of main valves, such as control valves, system discharge valves to torch, connection valves between raw materials and product pipelines and boundary areas.
G. Check the leakage at the insertion blind board.
3. Treatment of Leakage Points
A. Mark the leak point and record it at the same time. Then repair it and test it until it is eliminated.
B. The treatment of leakage point should be carried out after pressure relief.
With the above summary, I hope it will be helpful to our customers. If you don't understand or ask for help, please click on our official website: gas booster pump http://www.aiqin1.cn or call for advice. We will try our best to solve it for you.