IMPORTANT INSTRUCTIONS FOR PRESSURE SETTING:

In order to obtain a correct adjustment and consequently a proper functioning of the valve, always make sure that, when working at the maximum pressure, the valve by-pass keeps releasing a quantity of water equal to 5% of the total flow-rate. In case the flow-rate at the by-pass is close to zero or exceeds 15% of the maximum flow-rate, this could cause faults, early wear and result in situations of danger.

Connect the valve to the water system and follow these steps:

1. Unloose the lock nut and fully screw down the adjustment screw in order to reduce the pressure to the minimum value.

2. Open the gun or the water control device and start the system. Make sure that the air contained in it is fully ejected.

3. Keeping the gun or the water control device open, start adjusting the pressure by unscrewing the screw. Alternate the adjusting operations with a few openings and closings of the gun or of the control device. When the desired pressure has been reached, open and close the gun/control device a few times again in order to stabilize the various components (seals, springs etc.).

4. Check the pressure value again and correct if necessary & lock the screw by tightening the lock nut.

5. In order to obtain working pressures lower than the maximum set pressure, unloose the lock nut and turn the screw clockwise