Products

HYDRAULIC VALVES

WATER WORKS

G SERIES - GLOB TYPE HYDRAULIC CONTROL VALVE G-PRV SERIES - PRESSURE REDUCING CONTROL VALVE G-QRV SERIES - PRESSURE RELIEF HYDRAULIC CONTROL VALVE G-FLV SERIES - FLOAT LEVEL CONTROL VALVE G-EL / 2W SERIES - SOLENOID CONTROL VALVE G-EL / 3W SERIES - SOLENOID CONTROL VALVE G-EFL SERIES - ELECTRICAL FLOAT CONTROL VALVE G-PSV SERIES - PRESSURE SUSTAINING CONTROL VALVE G-PRSV SERIES - PRESSURE REDUCING AND SUSTAINING CONTROL VALVE G-PREL SERIES - PRESSURE REDUCING SOLENOID CONTROL VALVE G-ECV SERIES - ELECTRONIC CONTROL VALVE G-DKV SERIES - FLOW CONTROL VALVES G-PKV SERIES - PUMP CONTROL VALVE G-REV SERIES - SURGE ANTICIPATING CONTROL VALVE G-CV SERIES - HYDRAULIC CHECKVALVE G-LCV SERIES - LIFT TYPE CHECKVALVE DQR / DIRECT ACTING RELIEF CONTROL VALVE DLG-EL / ELECTRIC ACTIVATION DELUGE ALARM VALVE DLG-P / PNEUMATIC ACTUATION DELUGE (DRY) ALARM VALVE DLG-ELP / ELECTRO-PNEUMATIC ACTIVATION DELUGE ALARM VALVE (PRE-ACTION)

IRRIGATION

D SERIES - DIAPHRAGM OPERATORS HYDRAULIC CONTROL VALVES D-MV SERIES - MANUEL HYDRAULIC CONTROL VALVE D-ELV SERIES - SELONOID CONTROL VALVE D-PRV SERIES - PRESSURE REDUCING CONTROL VALVE D-QRV SERIES - PRESSURE RELIEF HYDRAULIC CONTROL VALVE D-PKV SEERIES - PUMP CONTROL VALVE D-PREL SERIES - PRESSURE REDUCING SELENOID CONTROL VALVE D-FLV SERIES - FLOAT CONTROL VALVE D-PSV SERIES - PRESSURE SUSTAINING CONTROL VALVE D-PRSV SERIES - PRESSURE REDUCING AND SUSTAINING CONTROL VALVE

FIRE FIGHTING

MECHANICAL VALVES

KNIFE GATE VALVE SURFACE BOXES CHECK VALVE (CLASS 150) CHECK VALVE (DISC TYPE) CHECK VALVE (SPRING TYPE) CHECK VALVE (GLOBE TYPE) CHECK VALVE (BALL) CHECK VALVE (WAFER TYPE) CHECK VALVE (CLASS 125) CHECH VALVE (SWING TYPE) CHECK VALVE (VERTICAL TYPE) DISMANTLING JOINT FOOT VALVES SAFETY VALVES GLOBE VALVES GLOBE VALVE (CLASS 150) GLOBE VALVE (CLASS 125) BUTTERFLY VALVE (LUG TYPE) BUTTERFLY VALVES (DOUBLE FLANGE) BUTTERFLY VALVE (WAFER TYPE) STRAINER BASKET BALL VALVES (CLASS 150-300) BALL VALVE (PN10) BALL VALVE (PN16) BALL VALVE (THREADED) STRAINER (Y TYPE) IRRIGATION HYDRANT (DOUBLE OUTPUT) IRRIGATION HYDRANT (SINGLE OUTPUT) GATE VALVE RISING STEM (CLASS 150) GATE VALVE RISING STEM (CLASS 125) GATE VALVES (PN10) GATE VALVE RISING STEM (PN16) GATE VALVE RESILIENT SEATED (PN10) GATE VALVE RESILIENT SEATED (PN16) GATE VALVE (PN 16) GATE VALVE (WITH INDICATOR) GATE VALGE RISING STEM (PN10) FLOAT VALVE (ANGLE TYPE) FLOAT VALVE (FLAT TYPE) TILTING CHECK VALVE AIR VALVES FIRE HYDRANT (SHORT TYPE) FIRE HYDRANT (OVER GROUND)

G-PRV SERIES - PRESSURE REDUCING CONTROL VALVE

G-PRV SERIES - PRESSURE REDUCING CONTROL VALVE

PRODUCT DESCRIPTION

The pressure reducing hydraulic control valves are used for reducing the high pressure value in the water conduction network to a desired lower value. The pressure reducing control valves protect the exit pressure value without affected from flow and flowrate changes. The pipe diameter is not considered while selecting the valve diameter. The valve diameter can be selected as the smaller or a little bit larger value of the pipe diameter. The cavitation values must be considered while selecting the valve diameter



1. Hydraulic Control Valve
2. Pilot Valve
3. Pilot Valve Setting Bolt
4. Ball Valve
5. Strainer
6. Needle Valve
7. Manometer

PROPERTIES

The pressure reducing hydraulic control valve works fully automatic with the network pressure without needing any extra energy source.
The two way pressure reducing pilot valve placed on the control valve reduces the exit pressure to a desired value without affected from the flowrate changes.
The valve fully opens itself when the entrance pressure value in the network reduces to below the desired exit pressure value.
In water conduction networks which have variable flowrate value, it is recommended that to use the smaller pressure reducing control valve diameter than the present pressure reducing control valve diameter as a by-pass line.
The valve shuts itself down automatically when there is no water in the network.
The pressure reducing hydraulic control valve can be used at vertical and horizontal positions comfortably in practice.

1. Isolation Valve
2. Manometer
3. Pressure Reducing Control Valve
4. Strainer Valve
5. Air Release Valve
6. By-Pass Pressure Reducing Control Valve

OPERATING MANUAL

Mount the valve according to the arrow placed on the valve that shows the flow direction.
For simplifying the maintenance of the valve, mounting isolation valves (gate, ball, butterfly etc.) at the entrance direction for to be able to shut-off the water in the network is recommended.
For the valves efficient working it is recommended to use an air relief valve before the valve.
Evacuate the water in the valves actuator to the atmosphere to prevent freezing in winter.
The pressure reducing hydraulic control valves adjustment is done from the pilot valves adjust screw placed on the main valve. If you turn the adjust screw clockwise, the exit pressure value increases. If you turn it counter clockwise, the exit pressure value reduces.
Before starting pressure adjustment on the valve, close the mini ball type valve placed on the valves exit. The pressure gauge placed on the pilot valve will show a specific value. Adjust the desired exit pressure value with the adjust screw via looking that pressure gauge. In this position the main valve is closed up. After adjusting the desired pressure value open the mini ball type valve.
Adjust the valves exit pressure value to the maximum entrance pressure values approximately 1/3 to prevent the cavitation danger. (Please look at the cavitation table) If the exit pressure value is desired to adjust even a smaller value, the pressure must be reduced gradually through mounting two pressure reducing control valves to the network.
Continuously observe the valves exit pressure value. If there is a problem can not be solved, please contact us.