, Product performance and use: 1, this series of valves direct acting pressure control valve, the valve can be internal or external control pressure. 2, valve types can be divided into low pressure relief valve, unloading valve or sequence valve. , Product technical parameters: 1, adjust the pressure, relax the lock nut and slowly turn the handle clockwise to raise the pressure, and counterclockwise to reduce pressure, adjustment is completed, be sure to tighten the nut. Pressure rely installation files lap limit, when the working pressure can not be reached, you can remove some of the retaining ring. Internal drain-secondary pressure outlet, and an external drain type drain port must be kept low back pressure of approximately atmospheric pressure, it should be connected directly to the back to the tank. Sales Miss Mo 13927792326