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Reliably sealing check valves!

check valves are usually used in pipeline systems (e.g. drains) in order to prevent a backflow of the medium. The swing check valve only allows the medium to flow in one direction. Should the pressure within the system exceed the valves resistance, the swing check opens in flow direction and allows for the medium to flow through. Once the pressure goes back to below the valve resistance, or even changes the flow direction of the medium, the swing check valve closes and seals reliably. In contrast to ball valves or butterfly valves, the closing of the valve happens automatically, regulated only through the pressure and flow of the medium.

Swing-check-valve intermediate flange type

Intermediate flange swing-check-valves are crucial in closed systems, power plant construction, pipeline construction as well as biogas and gas power plants. They are protective devices to prevent backflow, which is an important safety precaution. When implementing an intermediate flange non-return valve, quality is especially important in order to guarantee safety and longevity.
Intermediate flange swing-check-valves are also often used in shipping industry, oil production and processing and water treatment plants. Intermediate flange swing-check valves from NieRuf are characterized by a very short thus space-saving construction. They are self-centering and the eyebolt makes them easy to implement and exchange.

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check valve DN100 ZR02 stainless steel A351 CF8M EPDM

ZR02000111

check valve DN100 PN 10/16 DIN EN 1092-1 Form B made of stainless steel A351 CF8M seal EPDM

Technical features

  • diameter DN100
  • design swing check valve
  • seal EPDM
  • body material stainless steel A351 CF8M
  • pressure range 0 - 20 bar
  • NieRuf-Exchange
    24 months warranty
    Certified

€189.40*

€225.39 VAT included.

Delivery time
in stock
Express delivery*

swing check valve DN125 ZR01 steel 1.0460 / A 105, zinc plated EPDM

ZR01000112

swing check valve DN125 PN 10/16 DIN EN 1092-1 Form B made of steel 1.0460 / A 105, zinc plated seal EPDM for liquid and gaseous media

Technical features

  • diameter DN125
  • design swing check valve
  • seal EPDM
  • body material steel 1.0460 / A 105, zinc plated
  • pressure range 0 - 16 bar
  • NieRuf-Exchange
    24 months warranty
    Certified

€104.20*

€124.00 VAT included.

Delivery time
in stock
Express delivery*

swing check valve DN65 ZR02 stainless steel A351 CF8M PTFE

ZR02000309

swing check valve DN65 PN 10/16/25/40 DIN EN 1092-1 Form B made of stainless steel A351 CF8M seal PTFE for liquid and gaseous media

Technical features

  • diameter DN65
  • design swing check valve
  • seal PTFE
  • body material stainless steel A351 CF8M
  • pressure range 0 - 30 bar
  • NieRuf-Exchange
    24 months warranty
    Certified

€119.40*

€142.09 VAT included.

Delivery time
in stock
Express delivery*

swing check valve DN65 ZR01 steel 1.0460 / A 105, zinc plated NBR

ZR01000409

swing check valve DN65 PN 10/16/25/40 DIN EN 1092-1 Form B made of steel 1.0460 / A 105, zinc plated seal NBR for liquid and gaseous media

Technical features

  • diameter DN65
  • design swing check valve
  • seal NBR
  • body material steel 1.0460 / A 105, zinc plated
  • pressure range 0 - 16 bar
  • NieRuf-Exchange
    24 months warranty
    Certified

€63.50*

€75.57 VAT included.

Delivery time
in stock
Express delivery*

swing check valve with spring DN50 ZR04 stainless steel A351 CF8M EPDM

ZR04000108

swing check valve with spring DN50 PN 10/16/25/40 DIN EN 1092-1 Form B made of stainless steel A351 CF8M seal EPDM

Technical features

  • diameter DN50
  • design swing check valve
  • seal EPDM
  • body material stainless steel A351 CF8M
  • pressure range 0 - 40 bar
  • NieRuf-Exchange
    24 months warranty
    Certified

€116.00*

€138.04 VAT included.

Delivery time
in stock
Express delivery*

check valve DN40 ZR02 stainless steel A351 CF8M EPDM

ZR02000107

check valve DN40 PN 10/16/25/40 DIN EN 1092-1 Form B made of stainless steel A351 CF8M seal EPDM

Technical features

  • diameter DN40
  • design swing check valve
  • seal EPDM
  • body material stainless steel A351 CF8M
  • pressure range 0 - 40 bar
  • NieRuf-Exchange
    24 months warranty
    Certified

€79.80*

€94.96 VAT included.

Delivery time
in stock
Express delivery*

swing check valve DN40 ZR05 plastic PVC-U EPDM

ZR05000107

swing check valve DN40 PN 10/16 DIN EN 1092-1 Form B plastic PVC-U seal EPDM for liquid and gaseous media

Technical features

  • diameter DN40
  • design swing check valve
  • seal EPDM
  • body material plastic PVC-U
  • pressure range 0 - 10 bar
  • NieRuf-Exchange
    24 months warranty
    Certified

€60.90*

€72.47 VAT included.

Delivery time
in stock
Express delivery*

swing check valve with spring DN200 ZR04 stainless steel A351 CF8M EPDM

ZR04000114

swing check valve with spring DN200 PN 10/16 DIN EN 1092-1 Form B made of stainless steel A351 CF8M seal EPDM

Technical features

  • diameter DN200
  • design swing check valve
  • seal EPDM
  • body material stainless steel A351 CF8M
  • pressure range 0 - 16 bar
  • NieRuf-Exchange
    24 months warranty
    Certified

€498.00*

€592.62 VAT included.

Delivery time
in stock
Express delivery*

Swing-check-valves with intermediate flange that matches your requirements

Do you have special requirements for your intermediate flange non-return valve? A one of a kind application, where a standard swing-check-valve simply can not be used? We would love to help you find an individual solution for your application. Whether it is aggressive media like DI water, high pressure ranges or high temperatures – our experts will help you find the right product or manufacture one specifically for your application.


Do you need a standard intermediate flange non-return valve for your pipeline, preferably at low cost? You are based in the USA and need flange sizes ANSI150 or ANSI300? No problem for us – simply order your intermediate flange non-return valve at low cost from our online shop, or give us a call. Nominal sizes ranging from DN32 to DN500 and pressure ranges from PN10-PN40 fulfill all requirements in nearly any application. They are made of stainless steel, steel, PVC-U, PP, PVDF or aluminum bronze. Seals can be NBR, FKM, Viton, RPDM, PTFE or metal. For US customers, intermediate flange non-return valves can be made in ANSI 150 and ANSI 300. Also, the valves can be manufactured with a spring reset or without spring.


FAQ

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Special requests, spare parts or a quick support? Our staff will answer your questions and concerns immediately.

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

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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.

This is NieRuf


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Commitment engenders trust. We stand by our word and are convinced that as a result not only our customers but also everyone we work with can rely on us.

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We always strive to find the best solution for our customers. It is our goal and incentive to have completely satisfied customers.

Competently

Technical and commercial expertise form the basis for developing qualified solutions tailored precisely to the needs of our customers.

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We do not adhere to rigid guidelines but instead focus on the individual wishes and needs of our customers. They are more important to us than internal company processes.

Contact

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Do you need help?

For all questions we are available by phone

Mo - Fr 08:30 - 17:00

+49 7143/9666-900

or send us an e-mail:

sales@nieruf.com

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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.

order via mail:

07143 / 96669 - 00