Rückschlagklappen werden in Rohrleitungen (bspw. Abwasserleitungen) eingesetzt um den Rückfluss eines Mediums innerhalb des Systems zu verhindern. Der Durchfluss des Mediums kann durch die Rückschlagklappe nur in eine Richtung erfolgen. Sollte der Druck im System den Klappenwiderstand der Rückschlagklappe übersteigen, öffnet sich die Klappe in Flussrichtung und lässt das Medium durchströmen. Sinkt der Druck im System anschließend wieder unter den Klappenwiederstand oder verändert sich sogar die Flussrichtung des Mediums, dann schließt die Klappe zuverlässig und dichtet gegen das Medium ab. Anders als beim Kugelhahn oder der Absperrklappe erfolgt des schließen völlig automatisch über den Druck und Durchfluss des Mediums.
GR02000103
swing check valve 1/2" inch female thread, body made of brass, disc made of brass seal metal
GR02000102
swing check valve 3/8" inch female thread, body made of brass, disc made of brass seal metal
ZR02000111
check valve DN100 PN 10/16 DIN EN 1092-1 Form B made of stainless steel A351 CF8M seal EPDM
GR01000002
swing check valve 3/8" inch female thread, body made of stainless steel 1.4408, disc made of stainless steel 1.4408 seal metal
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
DR02000108
dual plate check valve DN50 seal EPDM PN 10/16/25/40 DIN EN 1092-1 Form B, body made of grey cast iron wings made of stainless steel
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
GR02000106
swing check valve 1 1/4" inch female thread, body made of brass, disc made of brass seal metal
Challenging applications ask for a variety of different check valves. Depending on the mounting position, installation place, temperature and medium, different check valves should be used. Depending on the medium, which flows through the system, the temperature and the installation place, the material of the swing check valves needs to be chosen. NieRuf offers check valves made of stainless steel, steel, PVC-U, PP; cast iron and GGG40. They come with FPDM, PTFF, NBR and FKM seals, in diameter DN15, DN20 and even up to DN500 or DN600.
No matter what your challenge regarding check valves looks like, our team at NieRuf Industriearmaturen will take it on! Together with you, we will find the right solution. With demanding or aggressive media, we suggest check valves made of stainless steel. Frequently used backflow preventers are check valves and dual plate check valves. The swing check valves can be set up with an additional spring to facilitate closing. With high pressure ranges and high flow rates (which means high KV/KVS), dual plate check valves should be used, for they have a significantly low loss of flow. If you need specific connections to you pipeline, the DISCO- check valve can be used. We would love to help you find the right swing check valve from our extensive product range.
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
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.
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.
We always strive to find the best solution for our customers. It is our goal and incentive to have completely satisfied customers.
Technical and commercial expertise form the basis for developing qualified solutions tailored precisely to the needs of our customers.
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 For all questions we are available by phone
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