How to Adjust the Pressure of a Relief Valve?

[AnaFitz]

Within the range of spring working pressure indicated on the nameplate, the opening pressure can be adjusted by rotating the adjustment screw to change the spring compression. Before rotating the adjustment screw, the inlet pressure should be reduced to below 90% of the opening pressure to prevent the valve disc from being driven to rotate during the adjustment, which could damage the sealing surface. Below is relevant information about hydraulic valves: 1. The relief valve can be installed either horizontally or vertically. Regardless of the installation angle, it is important to pay attention to the direction of water flow into the valve body during installation to avoid mistakes. 2. If the relief pipe of the relief valve is too long and the drainage outlet is far away, the diameter of the relief pipe should be one size larger than normal during installation. This operation can effectively prevent damage and malfunction of the relief valve.