Installation, commissioning and maintenance instructions for 200X pilot operated pressure reducing valve

When installing in the pipeline network, attention should be paid to the direction of water flow being consistent with the arrow on the valve body.

2. A Y-shaped filter must be installed in front of the valve to prevent dirt from entering the valve and affecting the static pressure effect.

3. Gate valves should be installed before and after the valve for maintenance purposes.

4. The opening degree of the needle valve is 1/4 turn, and the control valve is in the fully open position.

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During the initial operation of the pilot operated pressure reducing valve, the gate valve in front of the pressure reducing valve should be slowly opened and not fully opened at once. If it is found that the pressure is not reduced. Close the gate valve in front of the valve, drain the water behind the valve, and then slowly supply water from the inlet to reduce the pressure.

The adjustable pilot operated pressure reducing valve needs to adjust the pressure under static pressure, that is, when the gate valve behind the valve is closed. Rotate the adjusting screw of the pilot valve clockwise to increase the pressure behind the valve. Rotate the valve counterclockwise to decrease the pressure behind the valve. Adjust the required pressure to make the locking nut firm. If the pressure exceeds the required value during pressure regulation, the pressure behind the valve should be reduced and then adjusted from low to high again.

If there is a "hunting vibration" phenomenon (periodic opening or closing) during the operation of the adjustable pilot pressure reducing valve, the needle valve should be slightly closed clockwise to reduce the closing speed of the shut-off port and eliminate the "hunting vibration" phenomenon.

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