, Product performance and uses: 1, pressure reducing valve is branched back valve to senior set lower than the pressure of the main circuit, and also be able to be controlled remotely through the remote control port. Unidirectional check valve regulator is a relief valve in parallel, so that play the role of one-way decompression. , Product technical parameters: 1, adjust the pressure, relax the lock nut and slowly turn the handle clockwise liter pressure, and counterclockwise to reduce the pressure adjustment is completed, do not forget to tighten the nut. Pressure rely on installation files lap limit, the Lou a work pressure can not be achieved, you can remove some of the stalls circle. 2 drain opening pressure must be maintained in an approximate atmospheric pressure low back pressure, so should be the diameter through the fuel tank drain port. There are two threaded connecting the pressure port, they can be mutually connected with each other in the pipeline, an inlet and an outlet, the valve can also be blocked by a pressure port case.