Pressure relief valve

Pressure reducing valve reducing valve) is used for controlling the opening and the opening closing piece to adjust the flow of medium in the valve body, reducing pressure on the media, adjustable opening and opening closing member at the same time with the role of back pressure valve, the pressure was maintained at a certain range valve.

Relief valve

A hydraulic pressure control valve. In the hydraulic equipment is main the overflow effect of constant pressure and safety protection.

Overflow effect of constant pressure: the quantitative pump throttle system, the quantitative constant flow pump is provided. When the system pressure increases, will reduce traffic demand. At this point the relief valve open, so that excess profits flow back to the tank, inlet pressure relief valve to ensure that the outlet pressure of the pump, constant (often with the pressure fluctuations valve port open).

Safety protection: the system work properly, the valve closed. Only if the load exceeds the specified limit (the system pressure exceeds the set pressure) open the overflow, overload protection, the system pressure will no longer increase (usually make the relief valve set pressure adjustment than the maximum working pressure system high 10% ~ 20%).

A general practical application: for unloading valve, remote pressure regulating valve, for high-voltage multi-level control valve, sequence valve used to generate back pressure for, (on the back of oil on the road).

Overflow valve generally have two kinds of structure: 1, direct action type relief valve. 2, the pilot type relief valve