This application relates to a
cartridge-type pressure reducing valve. A pressure regulating valve cover is connected to the valve body. A
gasket and a pressure regulating valve spring are disposed within the valve cover cavity of the pressure regulating valve cover. The first end of the pressure regulating valve spring is connected to the
gasket, and the second end is connected to a diaphragm
assembly. A regulating valve rod is adjustablely disposed on the pressure regulating valve cover, with one end passing through the cover and connected to the
gasket. The valve body has a spring groove, a gas inlet, and a gas outlet. A valve core is disposed within the valve body, and the valve core has a low-pressure chamber and a
valve port connecting to the low-pressure chamber. The low-pressure chamber connects to the gas outlet and, through the
valve port, connects to the gas inlet. One end of a preload spring is inserted into the spring groove, and the other end is connected to a rubber-coated valve rod. The rubber-coated valve rod movably passes through the
valve port and, under the combined action of the gas preset pressure and the preload spring, abuts against the valve core to close the valve port. The diaphragm
assembly is configured to change the distance between the rubber-coated valve rod and the valve port under force to open the valve port. This design reduces the number of
assembly parts and has the advantages of simple structure and high assembly efficiency.