Y-type check valve DN15 - 1/2" inch made of stainless steel 1.4408 seal PTFE for liquid and gaseous media
diameter:
DN15 - 1/2" inch
design:
Y-type check valve
seal:
PTFE
body material:
stainless steel 1.4408
pressure range:
0 - 40 bar
Y-type check valve DN20 - 3/4" inch made of stainless steel 1.4408 seal PTFE for liquid and gaseous media
diameter:
DN20 - 3/4" inch
design:
Y-type check valve
seal:
PTFE
body material:
stainless steel 1.4408
pressure range:
0 - 40 bar
Y-type check valve DN40 - 1 1/2" inch made of stainless steel 1.4408 seal PTFE for liquid and gaseous media
diameter:
DN40 - 1 1/2" inch
design:
Y-type check valve
seal:
PTFE
body material:
stainless steel 1.4408
pressure range:
0 - 40 bar
Y-type check valve DN32 - 1 1/4" inch made of stainless steel 1.4408 seal PTFE for liquid and gaseous media
diameter:
DN32 - 1 1/4" inch
design:
Y-type check valve
seal:
PTFE
body material:
stainless steel 1.4408
pressure range:
0 - 40 bar
Y-type check valve DN10 - 3/8" inch made of stainless steel 1.4408 seal PTFE for liquid and gaseous media
diameter:
DN10 - 3/8" inch
design:
Y-type check valve
seal:
PTFE
body material:
stainless steel 1.4408
pressure range:
0 - 40 bar
Y-type check valve DN25 - 1" inch made of stainless steel 1.4408 seal PTFE for liquid and gaseous media
diameter:
DN25 - 1" inch
design:
Y-type check valve
seal:
PTFE
body material:
stainless steel 1.4408
pressure range:
0 - 40 bar
Y-type check valve DN50 - 2" inch made of stainless steel 1.4408 seal PTFE for liquid and gaseous media
diameter:
DN50 - 2" inch
design:
Y-type check valve
seal:
PTFE
body material:
stainless steel 1.4408
pressure range:
0 - 40 bar
Angle seat non-return valve made from high quality stainless steel.
The casing, the disc and the cover of the angle seat non-return valves are made from high quality stainless steel 1.4408, the spring comprises SS316 and the soft seal is PTFE. The Y non-return valve is available with bilateral internal thread BSP in the nominal widths G ¼“ – 2 ½“ inches. The length of the valves is between 64mm and 167mm, depending on the model. The stainless steel non-return valves can be used up to pressure level PN40. The lower opening pressure differs depending on the nominal width and is between 40mbar and 25mbar (more precise information is contained in the respective datasheet). The valve is suitable for liquid and gaseous media, as well as neutral and non-neutral media with temperatures between -25°C and a maximum of +200 degrees Celsius.
Use of the Y non-return valves
The Y-design non-return valves are frequently used in heating engineering in the cold and hot water area, there are particularly in demand here because of the good temperature properties, the high flow values, the low opening pressure, the short lengths and the reliable sealing. These valves are also very popular in other areas thanks to the easy installation, the low price and fast cleaning. For example, they are installed in tank systems, for garden irrigation, in pump systems and in water and water treatment plants.
Maintenance and cleaning of the threaded check valves
In normal cases, the valves are very insensitive to malfunction and low maintenance. However, is dirt is not filtered out of the medium, the has to be cleaned occasionally. Impurities, for examine in the water, can limit the functioning of the spring and disrupt the opening and closing process. For easy cleaning, the valve should be installed between two ball valves , this makes it easier to remove it from the pipe and refit it. The cap of the Y non-return valve can then be removed and the internal spring cleaned with water. If is is too difficult, a dirt trap can be installed before the non-return valve. This removes dirt before it reaches the valve. However, the dirt trap also have to be cleaned occasionally.
There for you
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
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
Committed
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.
Motivated
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.
Flexible
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 
Resistance check 
Frequently asked questions 
Configurator 