Dual Plate Check Valve
The Dual Plate Check Valve is a specialized valve designed for use in piping systems between flanges according to DIN PN10/16. It is available in various nominal sizes from DN50 to DN300 and is mounted in a wafer-type housing that meets the requirements of EN 558-1, Series 16. The valve body is made of either GGG40, a ductile cast iron known for its robustness, or stainless steel, providing additional durability and resistance to corrosion. The valve discs are made of CF8M stainless steel, offering high corrosion resistance, while the shaft and spring are made of SS316 stainless steel, also known for their corrosion resistance and strength. The sealing is available in two variants: NBR, suitable for operating temperatures up to 80°C, and EPDM, suitable for temperatures up to 120°C. The maximum operating pressure is 16 bar. For additional corrosion protection, the valve is coated with a 150µm thick epoxy coating in RAL 5015 (sky blue). This combination of robust materials and precise manufacturing makes the Dual Plate Check Valve a versatile and durable solution for controlling liquid and gas flows in piping systems.
Sub-Categories:
RF200 dual plate check valve DN 100 PN10/16 NBR nodular cast iron stainless steel with spring Product number: 302-1021-12
Intermediate flange double check valve DN 100 PN10/16Installation between flanges acc. to DIN PN10/16, Body made of (GGG40)ductile iron, Leaf made of CF8M stainless steel, Shaft & spring made of stainless steel (SS316), Gasket NBR vulcanised (max. 80°C) - NBR versions are used for gases, oils, alkalis, waste water or acids, Max. Operating pressure 16 bar, Paint Epoxy 150µm, RAL 5015
Seal :
NBR
NBR
Execution :
Double flap non-return damper
Double flap non-return damper
Nominal width :
DN100 - 4'' inch
DN100 - 4'' inch
Body:
Ductile Cast Iron (GGG40)
Ductile Cast Iron (GGG40)
Available, delivery time: in stock
RF200 dual plate check valve DN 80 PN10/16 NBR nodular cast iron stainless steel with spring Product number: 302-1021-11
Wafer double check valve DN 80 PN10/16Installation between flanges acc. to DIN PN10/16, body made of (GGG40)ductile iron, leaf made of CF8M stainless steel, shaft & spring made of stainless steel (SS316), gasket NBR vulcanised (max. 80°C), Max. Max. operating pressure 16 bar, paint epoxy 150µm, RAL 5015
Seal :
NBR
NBR
Execution :
Double flap non-return damper
Double flap non-return damper
Nominal width :
DN80 3'' inch
DN80 3'' inch
Body:
Ductile Cast Iron (GGG40)
Ductile Cast Iron (GGG40)
Available, delivery time: in stock
RF200 dual plate check valve DN 65 PN10/16 EPDM ductile cast iron stainless steel with spring Product number: 302-1020-10
Wafer type double swing check valve DN 65 PN10/16Installation between flanges acc. to DIN PN10/16, body made of (GGG40)ductile iron, leaf made of CF8M stainless steel, shaft & spring made of stainless steel (SS316), gasket EPDM vulcanised (max. 120°C), Max. Max. operating pressure 16 bar, paint epoxy 150µm, RAL 5015
Nominal width :
DN65 - 2 1/2'' inch
DN65 - 2 1/2'' inch
Body:
Ductile Cast Iron (GGG40)
Ductile Cast Iron (GGG40)
Seal :
EPDM
EPDM
Execution :
Double flap non-return damper
Double flap non-return damper
Available, delivery time: in stock
RF200 dual plate check valve DN 125 PN10/16 NBR nodular cast iron stainless steel with spring Product number: 302-1021-13
Double swing check valve DN 125 PN10/16Installation between flanges acc. to DIN PN10/16, Body made of (GGG40)ductile iron, Leaf made of CF8M stainless steel, Shaft & spring made of stainless steel (SS316), Gasket NBR vulcanised (max. 80°C) - NBR versions are used for gases, oils, alkalis, waste water or acids, Max. Operating pressure 16 bar, Paint Epoxy 150µm, RAL 5015
Seal :
NBR
NBR
Nominal width :
DN125 - 5'' inch
DN125 - 5'' inch
Body:
Ductile Cast Iron (GGG40)
Ductile Cast Iron (GGG40)
Execution :
Double flap non-return damper
Double flap non-return damper
Available, delivery time: in stock
RF200 Dual plate check valve DN 80 PN10/16 EPDM ductile cast iron stainless steel with spring Product number: 302-1020-11
Intermediate flange double wing swing check valve DN 80 PN10/16Installation between flanges acc. to DIN PN10/16, body made of (GGG40)ductile iron, leaf made of CF8M stainless steel, shaft & spring made of stainless steel (SS316), gasket EPDM vulcanised (max. 120°C), Max. Max. operating pressure 16 bar, paint epoxy 150µm, RAL 5015
Execution :
Double flap non-return damper
Double flap non-return damper
Nominal width :
DN80 3'' inch
DN80 3'' inch
Seal :
EPDM
EPDM
Body:
Ductile Cast Iron (GGG40)
Ductile Cast Iron (GGG40)
Available, delivery time: in stock
RF200 Dual plate check valve DN 50 PN10/16 EPDM ductile cast iron stainless steel with spring Product number: 302-1020-09
Wafer type double plate check valve DN 50 PN10/16Installation between flanges acc. to DIN PN10/16, body made of (GGG40)ductile iron, plates made of CF8M stainless steel, shaft & spring made of stainless steel (SS316), gasket EPDM vulcanised (max. 120°C), Max. Max. operating pressure 16 bar, paint epoxy 150µm, RAL 5015
Body:
Ductile Cast Iron (GGG40)
Ductile Cast Iron (GGG40)
Nominal width :
DN50 - 2'' inch
DN50 - 2'' inch
Execution :
Double flap non-return damper
Double flap non-return damper
Seal :
EPDM
EPDM
Available, delivery time: in stock
RF200 Dual plate check valve DN 100 PN10/16 EPDM ductile cast iron stainless steel with spring Product number: 302-1020-12
Intermediate flange double leaf check valve DN 100 PN10/16Installation between flanges acc. to DIN PN10/16, body made of (GGG40)ductile iron, leaf made of CF8M stainless steel, shaft & spring made of stainless steel (SS316), gasket EPDM vulcanised (max. 120°C), Max. Max. operating pressure 16 bar, paint epoxy 150µm, RAL 5015
Body:
Ductile Cast Iron (GGG40)
Ductile Cast Iron (GGG40)
Seal :
EPDM
EPDM
Nominal width :
DN100 - 4'' inch
DN100 - 4'' inch
Execution :
Double flap non-return damper
Double flap non-return damper
Available, delivery time: in stock
RF200 Dual plate check valve DN 125 PN10/16 EPDM ductile cast iron stainless steel with spring Product number: 302-1020-13
Wafer type double leaf check valve DN 125 PN10/16Installation between flanges acc. to DIN PN10/16, body made of (GGG40)ductile iron, leaf made of CF8M stainless steel, shaft & spring made of stainless steel (SS316), gasket EPDM vulcanised (max. 120°C), Max. Max. operating pressure 16 bar, paint epoxy 150µm, RAL 5015
Execution :
Double flap non-return damper
Double flap non-return damper
Seal :
EPDM
EPDM
Body:
Ductile Cast Iron (GGG40)
Ductile Cast Iron (GGG40)
Nominal width :
DN125 - 5'' inch
DN125 - 5'' inch
Available, delivery time: in stock
RF200 dual plate check valve DN 200 PN10/16 EPDM ductile cast iron stainless steel with spring Product number: 302-1020-16
Intermediate flange double swing check valve DN 200 PN10/16Installation between flanges acc. to DIN PN10/16, body made of (GGG40)ductile iron, leaf made of CF8M stainless steel, shaft & spring made of stainless steel (SS316), gasket EPDM vulcanised (max. 120°C), Max. Max. operating pressure 16 bar, paint epoxy 150µm, RAL 5015
Execution :
Double flap non-return damper
Double flap non-return damper
Seal :
EPDM
EPDM
Body:
Ductile Cast Iron (GGG40)
Ductile Cast Iron (GGG40)
Nominal width :
DN200 - 8'' inch
DN200 - 8'' inch
Available, delivery time: in stock
RF202 Dual plate check valve DN 200 PN10/16 NBR stainless steel with spring Product number: 302-1031-16
Wafer type double plate check valve DN 200 PN10/16Installation between flanges acc. to DIN PN10/16, body & plates made of CF8M stainless steel, shaft & spring made of stainless steel (SS316), gasket NBR vulcanised (max. 80°C) - NBR versions are used for gases, oils, alkalis, waste water or acids, Max. operating pressure 16 bar.
Seal :
NBR
NBR
Execution :
Double flap non-return damper
Double flap non-return damper
Nominal width :
DN200 - 8'' inch
DN200 - 8'' inch
Body:
Stainless Steel
Stainless Steel
Available, delivery time: in stock
RF202 Dual plate check valve DN 200 PN10/16 EPDM stainless steel with spring Product number: 302-1030-16
Wafer type double-plate check Valve DN 200 PN10/16Installation between flanges acc. to DIN PN10/16, body & plates made of CF8M stainless steel, shaft & spring made of stainless steel (SS316), seal EPDM vulcanised (max. 120°C) - Suitable for general applications with non-aggressive liquids, Max. operating pressure 16 bar.
Seal :
EPDM
EPDM
Nominal width :
DN200 - 8'' inch
DN200 - 8'' inch
Body:
Stainless Steel
Stainless Steel
Execution :
Double flap non-return damper
Double flap non-return damper
Available, delivery time: in stock
RF202 dual plate check valve DN 150 PN10/16 EPDM stainless steel with spring Product number: 302-1030-14
Wafer type double plate Check Valve DN 150 PN10/16Installation between flanges acc. to DIN PN10/16, body & blade made of CF8M stainless steel, shaft & spring made of stainless steel (SS316), gasket EPDM vulcanised (max. 120°C) - Suitable for general applications with non-aggressive liquids, Max. operating pressure 16 bar.
Execution :
Double flap non-return damper
Double flap non-return damper
Nominal width :
DN150 - 6'' inch
DN150 - 6'' inch
Seal :
EPDM
EPDM
Body:
Stainless Steel
Stainless Steel
Available, delivery time: in stock
RF202 Dual plate check valve DN 65 PN10/16 NBR stainless steel with spring Product number: 302-1031-10
Wafer type double plate Check Valve DN 65 PN10/16Installation between flanges acc. to DIN PN10/16, body & plate made of CF8M stainless steel, shaft & spring made of stainless steel (SS316), gasket NBR vulcanised (max. 80°C) - NBR versions are used for gases, oils, alkalis, waste water or acids, Max. operating pressure 16 bar.
Body:
Stainless Steel
Stainless Steel
Nominal width :
DN65 - 2 1/2'' inch
DN65 - 2 1/2'' inch
Execution :
Double flap non-return damper
Double flap non-return damper
Seal :
NBR
NBR
Available, delivery time: in stock
RF200 dual plate check valve DN 300 PN10 EPDM ductile cast iron stainless steel with spring Product number: 302-1020-20
Wafer type double swing check valve DN 300 PN10Installation between flanges acc. to DIN PN10, body made of (GGG40)ductile iron, blade made of CF8M stainless steel, shaft & spring made of stainless steel (SS316), gasket EPDM vulcanised (max. 120°C), Max. Max. operating pressure 10 bar, paint epoxy 150µm, RAL 5015
Execution :
Double flap non-return damper
Double flap non-return damper
Nominal width :
DN300 - 12'' inch
DN300 - 12'' inch
Seal :
EPDM
EPDM
Body:
Ductile Cast Iron (GGG40)
Ductile Cast Iron (GGG40)
Available, delivery time: in stock
RF202 Dual plate check valve DN 250 PN10/16 EPDM stainless steel with spring Product number: 302-1030-18
Wafer type double-plate check valve DN 250 PN10/16Installation between flanges acc. to DIN PN10/16, body & blade made of CF8M stainless steel, shaft & spring made of stainless steel (SS316), gasket EPDM vulcanised (max. 120°C) - Suitable for general applications with non-aggressive liquids, Max. operating pressure 16 bar.
Execution :
Double flap non-return damper
Double flap non-return damper
Nominal width :
DN250 - 10'' inch
DN250 - 10'' inch
Seal :
EPDM
EPDM
Body:
Stainless Steel
Stainless Steel
Available, delivery time: in stock
RF202 Dual plate check valve DN 250 PN10/16 NBR stainless steel with spring Product number: 302-1031-18
Wafer type double plate check valve DN 250 PN10/16Installation between flanges acc. to DIN PN10/16, body & leaf made of CF8M stainless steel, shaft & spring made of stainless steel (SS316), gasket NBR vulcanised (max. 80°C) - NBR versions are used for gases, oils, alkalis, waste water or acids, Max. operating pressure 16 bar.
Execution :
Double flap non-return damper
Double flap non-return damper
Body:
Stainless Steel
Stainless Steel
Nominal width :
DN250 - 10'' inch
DN250 - 10'' inch
Seal :
NBR
NBR
Available, delivery time: in stock
RF202 Dual plate check valve DN 150 PN10/16 NBR stainless steel with spring Product number: 302-1031-14
Wafer type double plate Check Valve DN 150 PN10/16Installation between flanges acc. to DIN PN10/16, body & plates made of CF8M stainless steel, shaft & spring made of stainless steel (SS316), gasket NBR vulcanised (max. 80°C) - NBR versions are used for gases, oils, alkalis, waste water or acids, Max. operating pressure 16 bar.
Execution :
Double flap non-return damper
Double flap non-return damper
Nominal width :
DN150 - 6'' inch
DN150 - 6'' inch
Body:
Stainless Steel
Stainless Steel
Seal :
NBR
NBR
Available, delivery time: in stock
RF202 Dual plate check valve DN 300 PN10 NBR stainless steel with spring Product number: 302-1031-20
Wafer type double plate check valve DN 300 PN10Installation between flanges acc. to DIN PN10, body & plates made of CF8M stainless steel, shaft & spring made of stainless steel (SS316), seal NBR vulcanised (max. 80°C) - NBR versions are used for gases, oils, alkalis, waste water or acids, Max. operating pressure 16 bar.
Seal :
NBR
NBR
Execution :
Double flap non-return damper
Double flap non-return damper
Nominal width :
DN300 - 12'' inch
DN300 - 12'' inch
Body:
Stainless Steel
Stainless Steel
Available, delivery time: in stock
RF200 dual plate check valve DN 150 PN10/16 EPDM ductile cast iron stainless steel with spring Product number: 302-1020-14
Intermediate flange double swing check valve DN 150 PN10/16Installation between flanges acc. to DIN PN10/16, body made of (GGG40)ductile iron, leaf made of CF8M stainless steel, shaft & spring made of stainless steel (SS316), gasket EPDM vulcanised (max. 120°C), Max. Max. operating pressure 16 bar, paint epoxy 150µm, RAL 5015
Body:
Ductile Cast Iron (GGG40)
Ductile Cast Iron (GGG40)
Execution :
Double flap non-return damper
Double flap non-return damper
Nominal width :
DN150 - 6'' inch
DN150 - 6'' inch
Seal :
EPDM
EPDM
Available, delivery time: in stock
RF200 dual plate check valve DN 300 PN10 NBR nodular cast iron stainless steel with spring Product number: 302-1021-20
Double swing check valve DN 300 PN10Installation between flanges acc. to DIN PN10, Body made of (GGG40)ductile iron, Leaf made of CF8M stainless steel, Shaft & spring made of stainless steel (SS316), Gasket NBR vulcanised (max. 80°C) - NBR versions are used for gases, oils, alkalis, waste water or acids, Max. Operating pressure 10 bar, Paint epoxy 150µm, RAL 5015
Execution :
Double flap non-return damper
Double flap non-return damper
Nominal width :
DN300 - 12'' inch
DN300 - 12'' inch
Body:
Ductile Cast Iron (GGG40)
Ductile Cast Iron (GGG40)
Seal :
NBR
NBR
Available, delivery time: in stock
FAQ on double-plate non-return valve
A double plate check valve is a check valve with two semi-circular flaps that open to allow flow and close to prevent backflow. It offers low pressure loss and a fast closing response.
The two plate open in the direction of flow due to the pressure of the flowing medium. In the event of backflow or pressure drop, they collapse and close the passage to prevent backflow.
Diese Ventile werden häufig in Wasser- und Abwassersystemen, Heizungs-, Lüftungs- und Klimaanlagen (HVAC), sowie in industriellen Prozessen eingesetzt, wo es wichtig ist, den Rückfluss von Medien zu verhindern.
The advantages include low pressure loss, compact design, high reliability, low maintenance costs and the ability to be installed in a vertical or horizontal position.