D-PKV SEERIES - PUMP CONTROL VALVE

PRODUCT DESCRIPTION

Having been mounted in the delivery lines of the pumps used in irrigation systems, pump control valves are hydraulic control valves which operates in sync with the pump.

PROPERTIES

1- When the pump starts operation, having opened itself slowly, pump control valve transfers water to the system without creating any pressure fluctuation in the line.
2- When the pump stops, having closed itself slowly, pump control valve absorbs the impacts on the pump.
3- If the power supply is cut off, valve protects the pump by means of closing itself.
4- Owing to hydraulic design of the valve, pressure and flow rate control could be ensured by means of mounting pilot units on the pump control valve.
5- Selenoid valve on the valve consumes minimum energy.

WORKING PRINCIPLE

VALVE OPEN
Once the pump is started from the panel of the pump control valve, 3/2 way selenoid valve (being used for opening the valve) on the valve, discharges the pressurized water in the actuator slowly to atmosphere. While the pressurized water in the actuator is being discharged to atmosphere, having opened itself slowly, pump control valve transfers water to the system. Opening speed of pump control valve is adjusted via a needle valve mounted on the selenoid valve.

VALVE CLOSED
Once the pump is stopped from the panel of the pump control valve, power is supplied to 3/2 way selenoid valve (being used for closing the valve) on the valve and it enables the valve to be closed without causing any impact through transfering slowly the pressurized water in the line to the actuator of the valve. When the power is supplied to the selenoid valve for closing, the power of the other selenoid valve for opening is cut off. Pump valve is in operation with a full-sealing till closed when the stop command is given from the panel of the pump control valve. Pump and valve operates in sync with each other.

SAMPLE MOUNTING AND APPLICATION SCHEME

1. Pump
2. Isolatıon Valve
(Gate Valve , Buttery Valve , etc.)
3. Check Valve
4. Air Discharge Valve
5. Pump Control Valve
6. Pressure Reilef Control Valve
7. Manometer
8. Panel for Pump Control Valve

APPLICATION SCHEME

Mount the valve according to the arrow placed on the valve that shows the flow direction.
Mounting isolation valves (gate, butterfly or ball etc.) at the entrance direction for shutting-off the water in the line are recommended to ease the maintenance of the valve.
For the valve’s efficient working it is recommended to use an air relief valve before the valve.
Evacuate the water in the valve’s actuator to the atmosphere to prevent freezing in winter.
Connect the pump control valve’s panel properly to the pump’s main panel.
The valve’s opening speed is adjusted from the speed adjustment valve placed on the 3/2 way solenoid valve’s exit. If you turn the speed adjustment valve to the closed up position the valve’s opening speed will be longer, if you turn it to the opened position the opening up speed will be shorter.
Clean the filters at the entrance of the valve periodically depending on water quality.

1.Mini Ball Valve
2.Stranier
3.Speed Adjustment Valve
4.Check Valve
5.Selenoid Pilot Valve