The difference between relief valve and relief valve
Classification:
Release Time：2017-08-09
Pressure reducing valve is to ensure that the system is not overloaded under the premise of reducing system pressure, pressure reducing valve is generally set in the outlet pressure; relief valve is to prevent system overload, to ensure safety, relief valve is generally only used as low pressure and safety valve. The difference between pressure reducing valve and overflow valve (I) that the pressure reducing valve works actively, while the overflow valve works passively: 1. The pressure reducing valve keeps the pressure at the outlet unchanged, while the overflow valve keeps the pressure at the inlet unchanged; 2. When not working, the inlet and outlet of the pressure reducing valve communicate with each other, while the inlet and outlet of the overflow valve are blocked. 3. When not working, the valve port of the pressure reducing valve is open, while the overflow valve is normally closed, mainly to control the system pressure, can also play the role of unloading. (II) pressure reducing valve is a valve outlet pressure is lower than the inlet pressure of the pressure regulating valve: 1, the pressure reducing valve is mainly used to reduce the pressure of a branch of the hydraulic system, the branch pressure is lower than the main oil pressure and stable, in the set pressure range, the pressure reducing valve is also like the relief valve is closed. However, as the system pressure rises, when the pressure set by the pressure reducing valve is reached, the pressure reducing valve opens and some oil will return to the oil tank through it. The oil pressure of this branch will not rise. It plays the role of decompression and stabilization of this branch! Relief valve is different, it is installed at the outlet of the pump will ensure that the overall pressure of the system is stable and not overpressure. So he has safety, voltage regulation, voltage stabilization and other functions! 2. The pressure reducing valve is generally connected in series on a certain road to reduce pressure and maintain the function of this branch. The overflow valve is generally connected in parallel in the branch of the system to adjust pressure, stabilize pressure and reduce pressure. (III) pressure reducing valve is normally open, through the narrow channel decompression; relief valve is normally closed, only when the system overpressure action. The pressure reducing valve is to reduce the pressure, and the pressure of a certain part of the hydraulic system is reduced. The function of the relief valve is to stabilize the pressure, overflow and overload protection. Use is not the same. So it cannot be replaced. (IV) pressure reducing valve control outlet pressure, relief valve control inlet pressure.
Pressure reducing valve is to ensure that the system is not overloaded under the premise of reducing system pressure, pressure reducing valve is generally set in the outlet pressure; relief valve is to prevent system overload, to ensure safety, relief valve is generally only used as low pressure and safety valve.
The difference between relief valve and relief valve
(I) pressure reducing valve is active work, while the relief valve is passive work:
1. The pressure reducing valve keeps the pressure at the outlet unchanged, while the relief valve keeps the pressure at the inlet unchanged;
2. In the case of non-working, the inlet and outlet of the pressure reducing valve are interconnected, while the inlet and outlet of the overflow valve are not accessible;
3. In the non-working state, the valve port of the pressure reducing valve is open, and the relief valve is normally closed. The relief valve is a pressure control valve, which mainly controls the system pressure and can also play a role in unloading.
(II) pressure reducing valve is a pressure regulating valve that makes the outlet pressure of the valve lower than the inlet pressure:
1. The pressure reducing valve is mainly used to reduce the pressure of a branch oil circuit of the hydraulic system, so that the branch pressure is lower and stable than the main oil circuit pressure. Within the scope of the set pressure, the pressure reducing valve is also closed like the overflow valve. However, as the system pressure rises, when the pressure set by the pressure reducing valve is reached, the pressure reducing valve opens and some oil will return to the oil tank through it. The oil pressure of this branch will not rise. It plays the role of decompression and stabilization of this branch! Relief valve is different, it is installed at the outlet of the pump will ensure that the overall pressure of the system is stable and not overpressure. So he has safety, voltage regulation, voltage stabilization and other functions!
2. The pressure reducing valve is generally connected in series on a certain road to reduce pressure and maintain the function of this branch. The overflow valve is generally connected in parallel in the branch of the system to adjust pressure, stabilize pressure and reduce pressure.
(III) pressure reducing valve is normally open, through the narrow channel decompression; relief valve is normally closed, only when the system overpressure action.
The pressure reducing valve is to reduce the pressure, and the pressure of a certain part of the hydraulic system is reduced. The function of the relief valve is to stabilize the pressure, overflow and overload protection. Use is not the same. So it cannot be replaced.
(IV) pressure reducing valve control outlet pressure, relief valve control inlet pressure.
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