dual plate check valves

Dual-plate-check-valve made of GGG40 or stainless steel

Dual plate check valves can be used in pipelines to prevent the backflow of a liquid or gaseous media. Similar to the intermediate flange non-return valve, the dual plate check valve is flanged into the pipeline system. It opens its plates only in one direction. Once the pressure of the medium flowing in the chosen direction exceeds the spring pressure of the plates and the valve resistance, the two semicircular plates open and allow the medium to flow through. As the pressure drops, or if the medium changes its flow direction, the plates close reliably. Since the plates open parallel to the flow direction, the dual plate check valves have a very low resistance and allow you to realize exceptionally high flow rates (KVS). It is mandatory to ensure that no contaminated medium flows through the plates. Contaminations could block the plates or damage the seals, which are permanently vulcanized, which can result in leaks.

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Product configurator

dual plate check valve DN150 seal NBR PN 10/16 DIN EN 1092-1 Form B, body made of stainless steel 1.4408, wings made of stainless steel 1.4408

diameter:

DN150

design:

dual plate check valve

seal:

NBR

body material:

stainless steel 1.4408

pressure range:

0 - 16 bar

Certified
€616.40*

€733.52 VAT included.

Delivery time: in stock

Express delivery:

dual plate check valve DN200 seal EPDM PN 10/16 DIN EN 1092-1 Form B, body made of grey cast iron wings made of stainless steel

diameter:

DN200

design:

dual plate check valve

seal:

EPDM

body material:

GGG40 epoxyd plated blue 180µm

pressure range:

0 - 16 bar

Certified
€348.20*

€414.36 VAT included.

Delivery time: in stock

Express delivery:

dual plate check valve DN100 seal FKM (Viton) PN 10/16 DIN EN 1092-1 Form B, body made of grey cast iron wings made of stainless steel

diameter:

DN100

design:

dual plate check valve

seal:

FKM (Viton)

body material:

GGG40 epoxyd plated blue 180µm

pressure range:

0 - 16 bar

Certified
€146.10*

€173.86 VAT included.

Delivery time: in stock

Express delivery:

dual plate check valve DN125 seal NBR PN 10/16 DIN EN 1092-1 Form B, body made of GGG40 epoxyd plated blue 180µm

diameter:

DN125

design:

dual plate check valve

seal:

NBR

body material:

GGG40 epoxyd plated blue 180µm

pressure range:

0 - 16 bar

Certified
€108.80*

€129.47 VAT included.

Delivery time: in stock

Express delivery:

dual plate check valve DN80 seal NBR PN 10/16/25/40 DIN EN 1092-1 Form B, body made of GGG40 epoxyd plated blue 180µm

diameter:

DN80

design:

dual plate check valve

seal:

NBR

body material:

GGG40 epoxyd plated blue 180µm

pressure range:

0 - 16 bar

Certified
€65.10*

€77.47 VAT included.

Delivery time: in stock

Express delivery:

dual plate check valve DN300 seal EPDM PN 10 DIN EN 1092-1 Form B, body made of grey cast iron wings made of stainless steel

diameter:

DN300

design:

dual plate check valve

seal:

EPDM

body material:

GGG40 epoxyd plated blue 180µm

pressure range:

0 - 10 bar

Certified
€816.70*

€971.87 VAT included.

Delivery time: in stock

Express delivery:

dual plate check valve DN200 seal NBR PN 10/16 DIN EN 1092-1 Form B, body made of GGG40 epoxyd plated blue 180µm

diameter:

DN200

design:

dual plate check valve

seal:

NBR

body material:

GGG40 epoxyd plated blue 180µm

pressure range:

0 - 16 bar

Certified
€242.90*

€289.05 VAT included.

Delivery time: in stock

Express delivery:

dual plate check valve DN50 seal EPDM PN 10/16/25/40 DIN EN 1092-1 Form B, body made of stainless steel 1.4408, wings made of stainless steel 1.4408

diameter:

DN50

design:

dual plate check valve

seal:

EPDM

body material:

stainless steel 1.4408

pressure range:

0 - 16 bar

Certified
€126.80*

€150.89 VAT included.

Delivery time: in stock

Express delivery:

Dual-plate-check-valve: the ultimate backflow protection

The dual-plate-check-valves from NieRuf can be made from one of two materials: The high quality model is made of stainless steel and can be used with oil, fuel oil and demineralized water, which comes in handy in areas of chemical industry or plant engineering. The cheaper model is made of GGG40 and can be used with less demanding liquid and gaseous media. It is often used in building technology as well as water- and sewage technology. They come in nominal sized from DN50 to DN600, which means they can be used exclusively in larger pipelines. The seal, depending on the medium, can be made of NBR, FKM, EPDM, Viton, metal or FPM. The FKM seal is most often used with oil, while the metal seal can withstand steam very well. All plates come with a return spring. The check valves can be mounted in any installation position, but keep the flow direction of the medium in mind. It should flow from bottom to top. The opening pressure of the valve can be found in the data sheets. Individual pressure and leakage tests are possible for each dual-plate-check-valve. The mounting and final inspection can only be done by trained staff. We would love to manufacture your individual twin-plate-check-valve, feel free to contact us.


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You can reach us from Monday to Friday at +497143 9666900 and any time at info@nieruf.de

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Quality


Our certified quality management according to DIN EN ISO 9001: 2015 is part of our DNA. With our test stands we can carry out pressure tests with up to 350 bar with air and water as well as leak tests according to DIN EN 122661.

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If you have any questions, we are available by phone from Monday to Friday from 8:30 a.m. to 5:00 p.m.

Fax order: 07143 / 96669 - 01

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