This utility model relates to a welded
water pressure reducing valve. The valve body contains a
piston cylinder and a
piston that cooperates with the
piston cylinder. A main spring is located inside the valve cover, and a
valve seat is located on the
valve stem. A pressure plate that cooperates with the
valve seat is located above the
valve seat, and a secondary spring is located below the valve seat. A lower pressure cover is located at the bottom of the valve body, and a secondary spring base is located on top of the lower pressure cover. The secondary spring is positioned between the valve seat and the lower pressure cover. The
diameter of the main spring is larger than that of the secondary spring. In use, the thrust of the piston and the action of the various springs push the
valve stem up and down, changing the opening of the
piston cylinder outlet, causing a change in flow resistance, weakening the influence of the
inlet pressure, and playing a pressure stabilizing role. This makes it more suitable for high-pressure
pressure reduction applications and extends its service life.