Spare parts for vacuum pressure relief valve

Vacuum pressure relief valve508

• Pressure relief valve 508Applied to the top of the warehouse, it automatically opens and releases pressure when the pressure inside the warehouse exceeds the normal range, serving as pressure protection.

2、 Main features1508Vacuum release valveUse a large diameter exhaust port (508mm) with an aluminum alloy cover, which is lightweight and sensitive to pressure changes. By using the weight of the valve cover to set the opening pressure, even through long-term operation, the correct and reliable opening pressure can be ensured. 2. Adopting aluminum alloy and cast iron structure, corrosion-resistant and aging resistant.

3. The structure is simple and there is no maintenance workload during normal operation.

4Vacuum release valveFlexible and reliable movements.

3、 Technical parameters

Entrance size 508mm, standard air permeability value, vacuum 7.69 × 10-3 Kgf/cm2, pressure 2.2 × 10-3, maximum air permeability value, vacuum 8.8 × 10-3 Kgf/cm2, pressure 26.36 × 10-3Zhejiang 508 pressure relief valve

508 pressure vacuum release valveWhen the pressure is released: When the pressure inside the storage or ash silo increases to the selected pressure value of the valve, the pressure inside the silo overcomes the weight of the valve seat cover (part 7), lifts the valve cover from the valve seat, and releases the pressure until the pressure inside the storage or ash silo drops to the same pressure value as the selected pressure value of the valve, and then the valve cover returns to its normal position.

Vacuum release valve 508When the valve vacuum is released: When the pressure inside the storage bin or ash silo is lower than atmospheric pressure, a vacuum is generated inside the storage bin or ash silo. When the vacuum value drops to the selected vacuum value of the valve, due to the action of atmospheric pressure on the diaphragm, the vacuum ring is lifted to the floating position. At this time, air enters the storage bin or ash silo until the internal vacuum value is lower than the selected value, and the vacuum ring returns to the normal position against the diaphragm.

Vacuum pressure relief valve508Belonging to a type of differential pressure controlVacuum release valveThe valve body includes a valve body and a valve seat threaded with the valve body, as well as a valve core and a compression spring arranged inside the valve seat. The valve body is a cylindrical member, and one end of it is provided with a protrusion for limiting the valve core and a spring stopper,

Pressure relief valve 508The other end is pressed against the core bottom plate; An air groove is arranged on the surface of the core column. The utility model is applied to a refrigerated container, and a hole is opened on the wall of the refrigerated container. The connecting flange on the valve body is connected to the wall of the refrigerated container through fasteners. When there is negative pressure inside the cold box, the valve will automatically open to supply air to the inside of the cold box due to the pressure difference between the inside and outside, breaking the negative pressure inside the box.

Construction:Vacuum release valveComposed of a flat cover, spring ring, movable ring, diaphragm, retaining ring spring, retaining ring, valve cover, valve seat, etc.

Working Principle:

When the valve is in a stationary position (sealed): When the pressure inside the storage or ash silo is maintained within the selected pressure value of the valve, the valve cover remains in a stationary position. Due to the pressure generated within the storage or ash silo, a force acts on the flexible diaphragm, causing the top surface of the diaphragm to tightly contact the valve seat, thereby achieving sealing.

When the valve pressure is released: When the pressure in the storage or ash silo increases to the selected pressure value of the valve, the pressure in the silo overcomes the weight of the valve seat cover, lifts the valve cover from the valve seat, and releases the pressure until the pressure in the storage or ash silo drops to the same pressure value as the selected pressure value of the valve, and then the valve cover returns to its normal position.

When the valve vacuum is released: When the pressure inside the storage bin or ash silo is lower than atmospheric pressure, a vacuum is generated inside the storage bin or ash silo. When the vacuum value drops to the selected vacuum value of the valve, due to the action of atmospheric pressure on the diaphragm, the vacuum ring is lifted to the floating position. At this time, air enters the storage bin or ash silo until the internal vacuum value is lower than the selected value, and the vacuum ring returns to the normal position against the diaphragm.

Supply products:Louver valve、Pressure relief valve、Stacked beam gate、Stainless steel sleeve mud discharge valve、pneumatic bell valve、Two way material distribution valve、Cast iron copper inlaid square gate、Steel square gate、Concealed cast iron copper inlaid gate、Bar valve、Single and double-layer rod valve、Stainless steel gate、Stainless steel channel gate、Cast iron copper inlaid gate、Cast iron copper inlaid slide valve、Ventilation Butterfly Valve、slap the door、Mud discharge valve、Stainless steel regulating barrier gate、Blind valve, plug valve, ash discharge valve、Knife Gate Valve、explosion-proof valve、Lift type proportional valve、Impeller feeder，Three way material distribution valveVarious types such as ball valvesNon standard valves.