The main safety valve instructions: 1, the main safety valve is mainly used for power plant boilers, pressure vessels, reducing the pressure on the device to prevent the pressure exceeds the maximum allowable pressure to ensure the safe operation of equipment. 2, when the media pressure rises to set pressure, the impulse safety valve opens, the medium from the pulse tube into the piston chamber of the main safety valve, pushing the piston down, so that the valve automatically open when the impulse valve is closed, the valve flap is closed automatically. 3, the sealing surface is made of Co-based Cr-Ni stainless steel surfacing, the valve flap is heat-treated to improve the wear resistance and erosion resistance. Main safety valve installation instructions: 1, the valve must be installed vertically in the highest position of the device. 2, the main safety valve fastened on the support, bearing the main relief valve to withstand the recoil generated when the recoil. 3, the exhaust pipe should have a special hanger, exhaust pipe weight shall not be added to the main safety valve, the main safety valve and the exhaust pipe connecting flange should be to eliminate any additional prestress. 4, the lowest point of the exhaust pipe should be considered hydrophobic, so as not to generate water hammer exhaust.
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