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-PRSV SERIES - PRESSURE REDUCING AND SUSTAINING CONTROL VALVE

G-PRSV SERIES - PRESSURE REDUCING AND SUSTAINING CONTROL VALVE

PRODUCT DESCRIPTION

The pressure reducing and sustaining control valves are automatic control valves which used in pumping systems carrying the water to the low levels. The pressure reducing and the pressure sustaining pilot valves are used on the main valve at the same time. The pressure sustaining pilot valve makes the pump start softly. The main valve is at the closed up position when the pump starts. The pressure sustaining pilot valve carries the water to the system with slowly opening up the main valve. So the pressure fluctuation in the system is prevented. The pressure reducing pilot valve serves for reducing the excessive pressure that can come to the conduction pipes and the water armatures being at the low levels.



1. Main Valve
2. Reducing Pilot Valve
3. Sustaining Pilot Valve
4. Ball Valve
5. Strainer
6. Needle Valve
7. Pressure Gauge

PROPERTIES

The pressure sustaining hydraulic control valves can be used comfortably at vertical or horizontal positions in application systems.
It measures the valves entrance pressure in the system and stabilizes it.
If it is used at the horizontal or the deep well pumping plants pump exits, it makes the pump start softly and saves electricity.
The valve works with the line pressure entirely hydraulic without needing any extra energy.
The valves maintenance is quite easy and cheap because of its design is diaphragm actuator based.
The valves exit pressure value can be adjusted to a desired value easily with the help of pressure reducing pilot valve.

OPERATING MANUAL

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 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 pilot valves pressure adjustment are done with the adjust screw. The pressure value increases when you turn the adjust screw clockwise. If you turn it counter clockwise, the pressure value reduces.
The main valves entrance pressure value is adjusted with the pressure sustaining pilot valve as shown with 3.
The main valves exit pressure value is adjusted with the pressure reducing pilot valve as shown with 2.
Clean the strainers filter as shown with 5 according to the water pollution degree at certain periods of time.





1. Pump
2. Isolation Valve
3. Pressure Reducing and Sustaining Control Valve
4. Air Valve
5. Pressure Gauge