Step one: close the gate valve in front of the pressure reducing valve and open the gate valve after the pressure reducing valve to create a low-pressure environment downstream;
Step 2: Rotate the adjusting screw counterclockwise to the uppermost position (relative to the lowest outlet pressure), and then close the rear gate valve of the pressure reducing valve;
Step 3: Slowly open the gate valve in front of the pressure reducing valve until it is fully open;
Step 4: Slowly turn the adjusting screw clockwise to adjust the outlet pressure to the required pressure (based on the gauge pressure behind the valve);
Step 5: After adjustment, lock the nut and openPressure reducing valveRear gate valve;
Note:Due to the working principle of the pressure reducing valve, if When the outlet pressure is higher than the set pressure during adjustment, it must be readjusted from the first step, that is, it can only be adjusted from low pressure to high pressure.
Pressure reducing valve installation diagram
[Regulatory provisions]
9.3.5 The setting of the pressure reducing valve should comply with the following requirements:
1. It should be located in front of the entrance of the alarm valve group;
2. A filter should be installed in front of the entrance to facilitate sewage discharge;
3. When connecting two or more alarm valve groups, a backup pressure reducing valve should be installed;
4. For a pressure reducing valve set vertically, the water flow direction should be downward;
5. Proportional pressure reducing valves should be set vertically, and adjustable pressure reducing valves should be set horizontally;
6. Control valves and pressure gauges should be installed before and after the pressure reducing valve. When the main valve body of the pressure reducing valve itself has a pressure gauge, the pressure gauge does not need to be installed;
7. The pressure reducing valve and the front and rear valves should have devices to protect or lock the adjustment accessories.
Note:1. → in the picture is the direction of water flow.
2. The pressure reducing valve and the front and rear valves should have devices to protect or lock the adjustment accessories.
3. Drainage measures should be provided at the pressure reducing valve and alarm valve.
The installation of the pressure reducing valve must be strictly in accordance with the direction of the arrow on the valve body and consistent with the direction of fluid flow. If the water quality is not clean and contains some impurities, a filter must be installed at the upstream water inlet of the OR pressure reducing valve (we recommend that the filtration accuracy is not less than 0.5mm).
The pressure reducing valve plays a certain check role in the pipeline. In order to prevent the harm of water hammer, a small Akustan expansion water tank can also be installed to prevent damage to the pipeline and valves. .
The filter must be installed in front of the water inlet pipe of the pressure reducing valve, and the expansion tank must be installed after the water outlet pipe of the pressure reducing valve! If you need to install a pressure reducing valve in a hot water system, you must install an OR check valve between the pressure reducing valve and the expansion tank. This allows the expansion tank to absorb the increased volume of water due to thermal expansion and prevent The impact of hot water backflow or pressure fluctuation on the pressure reducing valve ensures thatPressure reducing valve works normally for a long time.
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