A49H-4 Main Safety Valve

The A49H-4 main safety valve designed by Dazhong Valve Group is a cooperative brand of YOY Yongyi Valve Group. It is mainly used in power station boilers, pressure vessels, temperature reduction and pressure reduction devices to prevent the pressure from exceeding the maximum allowable pressure value and ensure the safe operation of the equipment. . When the medium pressure rises to the set pressure, the impulse safety valve opens, the medium enters the piston chamber of the main safety valve from the pulse tube, pushes the piston down, so that the valve automatically opens, and when the impulse valve closes, the valve flap automatically closes again. The sealing surface is made of cobalt-based chromium-nickel stainless steel surfacing.

• Mainly used in power station boilers, pressure vessels, temperature reduction and pressure reduction devices to prevent the pressure from exceeding the maximum allowable pressure value and ensure the safe operation of the equipment.

• When the medium pressure rises to the set pressure, the impulse safety valve opens, the medium enters the piston chamber of the main safety valve from the impulse tube, pushes the piston down, and the valve opens automatically. Auto close.

• The sealing surface is made of cobalt-based chromium-nickel stainless steel surfacing, and the valve disc is heat-treated to improve wear resistance and erosion resistance.