YOULI Multiway valve - Multiway valve regulation method

1. Under normal conditions, before the hydraulic multiway valve leaves the factory, its opening pressure should be adjusted one by one to the setting value required by the user. If the user puts forward the working pressure level of the spring, it should be adjusted according to the lower limit value of the pressure level.

2, before the user installs the multiway valve on the protected equipment or before installation, it must be adjusted at the installation site to ensure that the setting pressure value of the valve meets the requirements.

3. Within the range of the working pressure level of the spring indicated on the nameplate, the opening pressure can be adjusted by rotating the adjusting screw to change the compression of the spring.

4. Before rotating the adjusting screw, the valve inlet pressure should be reduced to less than 90% of the opening pressure to prevent the valve disc from being driven to rotate when rotating the adjusting screw, resulting in damage to the sealing surface.

5. In order to ensure the accuracy of the opening pressure value, the medium conditions, such as the type of medium and temperature, should be adjusted as close as possible to the actual operating conditions. When the type of medium changes, especially when the medium accumulates in a different state (for example, from a liquid phase to a gas phase), the opening pressure often changes. When the operating temperature rises, the opening pressure is generally reduced.

6, therefore, when adjusted at room temperature and used for high temperature, the setting pressure value at room temperature should be slightly higher than the required opening pressure value. The degree to which it is high is related to the valve structure and material selection, and should be based on the manufacturer's instructions.

7, basically all multi-way valves have a place to adjust the pressure, its nature is basically the same as the diesel pump, the valve itself is also a place to adjust the flow and pressure. Although there are a variety of valves, basically there will be a protruding screw on one side of the valve, a large nut on the outside and a hex screw on the inside.