product description:

        Y43H/Y43F/Y43Y-PN16~PN64 pilot piston type steam pressure reducing valve is mainly used in steam pipeline, which plays the role of decompression and pressure stabilization, flange connection form, piston type structure form, valve seat sealing surface material is Cr13 series stainless steel, Nominal pressure PN16~PN64

        Y43H/Y43F/Y43Y-PN16~PN64 pilot piston steam pressure reducing valve is composed of main valve and pilot valve. The main valve is mainly composed of valve seat, main valve disc, piston, spring and other low parts. The pilot valve is mainly composed of valve seat, valve flap, diaphragm, spring, adjusting spring and other low parts. The outlet pressure is set by adjusting the spring pressure, the outlet pressure is sensed by the diaphragm, and the piston is opened and closed to drive the piston to adjust the size of the flow area of the throttle part of the main valve to achieve the function of decompression and pressure stabilization.

        Features:

        1. The pressure difference of diaphragm induced pressure is more accurate.

        2. It can be customized according to different pressure and temperature.

        Executive standard:

        Pressure characteristic deviation (Mpa)△P2P:GB12246-1989

        Flow characteristic deviation (Mpa) P2G: GB12246-1989

        Leakage: GB12245-1989

        Product dimensions:

       Precautions for installation and use of pressure reducing valve:

       Installation Precautions:

       1. The installation of the valve must be performed by professionals with relevant qualifications. When tightening, the hexagonal parts on the same side should be tightly clamped. It is recommended to use polytetraethylene raw material tape or professional sealing glue for sealing. To install the tightening valve, you must first use a corresponding torque wrench Or pipe wrench, just screw in the effective thread length, do not cause excessive pressure on the inner end surface, causing damage and leakage;

       2. Before installing the pressure reducing valve, the pipeline system must be rinsed and cleaned to prevent dirty slag, scale, etc. from flowing into the valve and affecting the normal operation of the valve;

       3. The pressure reducing valve should be installed in a place convenient for maintenance and operation, and it must be installed horizontally and upright on the horizontal pipeline. It should be noted that the flow direction of the medium in the pipeline is consistent with the direction shown by the arrow on the valve body, and do not reverse it;

       4. When installing and using the pressure reducing valve, the bypass pipeline valve should be opened to exclude the mixture of condensate and soda in the pipeline to prevent water from being generated when the pressure reducing valve is opened. After the phenomenon, slowly turn the adjusting screw clockwise to adjust the outlet pressure to the desired pressure (based on the gauge pressure behind the valve), then tighten the lock nut back and screw on the protective cover;

       5. A filter should be installed before the pressure reducing valve to prevent debris in the medium from entering the pressure reducing valve and affecting its performance;

       Precautions for use:

       1. When using the pressure reducing valve, it is strictly prohibited to unscrew it and disassemble it by yourself, otherwise the tight performance and pressure reducing performance of the pressure reducing valve will be damaged;

       2. The pressure reducing valve not only plays the role of decompression, but also plays a role of stabilizing pressure

       3. In order to prevent the overpressure of the pressure reducing valve after the cold valve, a pressure reducing valve should be installed at least 4M away from the valve outlet;

       4. If you need to install the pressure reducing valve in the hot water system, you must install a check valve between the pressure reducing valve and the expansion tank, which can not only allow the expansion tank to absorb the volume of water due to thermal expansion, but also prevent the implementation of The influence of water backflow or pressure fluctuation on the pressure reducing valve to ensure the normal long-term operation of the pressure reducing valve;