The water pressure reducing valve is a special device for automatically reducing the working pressure of the pipeline. It can reduce the higher water pressure of the pipeline before the valve to the level required by the pipeline behind the valve. Pressure reducing valves are widely used in high-rise buildings, urban water supply networks, water pressure areas, mines and other occasions to ensure that the water supply system in the water supply system to obtain appropriate service water pressure and flow. In view of the fact that the water leakage rate and waste degree are almost proportional to the water pressure of the water supply system, the pressure reducing valve has improved system operating conditions and potential water saving effects. According to statistics, the Italian OR water pressure reducing valve has a water saving effect of about 45. %.

There are many types of pressure reducing valves, and conventionally, there are membrane type, inner spring piston type and the like. The basic principle of the pressure reducing valve is to reduce the water pressure by the local resistance of the flow passage in the valve to the water flow. The range of the water pressure drop is automatically adjusted by the pressure difference between the inlet and outlet of the membrane or the piston connected to the valve flap.

Basic performance

(1) Pressure regulation range: It refers to the adjustable range of the pressure reducing valve output pressure P2, within which the pressure reducing valve is required to reach the specified accuracy. The pressure regulation range is mainly related to the stiffness of the pressure regulating spring.

(2) Pressure characteristics: It refers to the characteristic that the output pressure fluctuates due to input pressure fluctuation when the flow rate g is constant. The smaller the output pressure fluctuation, the better the characteristics of the pressure reducing valve. The output pressure must be lower than the input pressure—the set value does not substantially change with the input pressure.

(3) Flow characteristics: It refers to the input pressure-timing, and the output pressure changes with the change of the output flow g. When the flow rate g changes, the smaller the change in the output pressure, the better. Generally, the lower the output pressure, the smaller the fluctuation with the output flow. Detailed analysis of imported Italian water pressure reducing valve

Italian OR water pressure reducing valve is widely used in the decompression of high-rise buildings. In the case of local high pressure or sudden water pressure, it protects the living and production water appliances. OR water pressure reducing valve series includes the following products, 0232 economy Type branch pipe pressure reducing valve, 0234 piston type branch pipe pressure reducing valve, 0226 diaphragm type branch pipe pressure reducing valve, 0204 high pressure branch pipe pressure reducing valve, OR water pressure reducing valve deceleration pressure also reduces static pressure, outlet pressure is stable without fluctuation, size Small, cost-effective, choose OR water pressure reducing valve is the choice of quality.

Installation of water pressure reducing valve:

1. The water pressure reducing valve can be installed horizontally or vertically on the flat pipe;

2. The installation of the water pressure reducing valve must be consistent with the direction of fluid flow in accordance with the direction of the arrow on the valve body. If the water quality is not clean and contains some impurities, the filter must be installed at the upstream inlet of the pressure reducing valve;

3. Open the water pressure reducing valve to adjust the outlet pressure, use a one-word screwdriver to adjust, clockwise to rotate the screwdriver outlet pressure becomes larger, and vice versa, the outlet pressure is reduced, with the pressure gauge to adjust until the outlet pressure reaches the required value;

4. The water pressure reducing valve plays a certain role in the pipeline. In order to prevent the damage of the water hammer, a small expansion tank can also be installed to prevent damage to the pipeline and the valve. The filter must be installed in front of the inlet pipe of the pressure reducing valve. , and the expansion tank must be installed after the outlet pipe of the water pressure reducing valve;

5. If it is necessary to install the water pressure reducing valve in the hot water system, a check valve must be installed between the pressure reducing valve and the expansion water tank. In this way, the expansion tank can absorb the volume of water increased due to thermal expansion, and can prevent the influence of hot water return or pressure fluctuation on the pressure reducing valve, and ensure the long-term normal operation of the pressure reducing valve.