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Pressure Relief Valve Can Not Be Installed In Reverse

Pressure Relief Valve Can Not Be Installed In Reverse

Pressure Reducing Valve can not be installed in reverse, gas pressure reducing valve can not be installed in reverse, steam pressure reducing valve can not be installed in reverse, why? Why is that?

Cast Iron Gate Valve Manufacturer says that the oil inlet and outlet of the pressure reducing valve is inversely connected, i.e. the oil inlet is connected to the oil outlet of the pressure reducing valve; Connect the load to the oil inlet of the pressure reducing valve. In this way, one is when the oil pressure is lower than the pressure relief valve setting pressure, the pressure relief valve valve is unchanged, that is, to maintain the normal open state; Second, when the oil pressure is higher than the pressure relief valve to set the pressure, the pressure relief valve guide valve opened, the pressure relief valve mouth closed small, even closed, a small amount of oil through the guide valve leakage back to the tank.

1. The valve can reduce static pressure and dynamic pressure at the same time.

2. The basic principle of the pressure reducing valve is by the flow of the valve on the local resistance to reduce water pressure, water pressure drop range is connected to the disc film or piston on both sides of the inlet and outlet water pressure difference automatic regulation, so both dynamic pressure reduction (water flow) and static pressure reduction (flow is 0); In particular, it can reduce pressure without affecting water flow.

Cast Iron Gate Valve Manufacturer

3. The term "reducing static pressure" is generally inaccurate in the strict sense, because the word "reducing" implies an energy loss and there is no energy loss in the above static state. Therefore, in fact, the pressure reducing valve static pressure is the use of hydraulic balance principle to make the pressure reducing valve in the closed state to partition upstream and downstream and maintain (or control) a lower, stable downstream pressure value.

4. The principle of dynamic pressure reduction is to make the reducing valve in a state of energy loss and over-current. For the pressure relief valve, the gap is automatically adjustable, unlike the pressure relief orifice (orifice fixed), this is the adjustable adjustable type pressure relief valve, but also in the use of pressure relief valve, before the valve, the valve after the pressure and not too large reason.

Pressure reducing valve supplied from Cast Iron Gate Valve Suppliers China,as an example, the system under the condition of no water OR water will not flow, OR pressure reducing valve is closed, the valve core exports and reducing valve inlet are separated, so the valve outlet pressure will not suffer the effect of inlet pressure, this also explains the building Lord said P = just rho gh problem, because the outlet pressure reducing valve and relief valve before the valve is not relevant.

 

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