The DISCO-check-valve is a special design of the check valves. It is special because of its construction. The design varies harshly in comparison with swing check valves. A toroidal spring pushes the check valve`s plate against the inside of the housing. As a result, it closes the pipeline system against any backflows. If the pressure comes from the front side, the plate disc opens within the housing und lets the liquid or gaseous medium flow. The installation position of the check valve is arbitrary because of its spring. What is furthermore beneficial is its short overall length.
disco check valve DN 100 made of Duplex 1.4469 seal NBR for liquid and gaseous media PN 6 to 40 (+ASME B16.5 / ANSI 150 and 300)
disco check valve DN 150 made of cast steel 1.0619 seal NBR for liquid and gaseous media PN 10 to 40 (+ASME B16.5 / ANSI 150)
disco check valve DN20 made of Duplex 1.4469 seal metall for liquid and gaseous media PN 6 to 40 (+ASME B16.5 / ANSI 150 and 300)
disco check valve DN 15 made of cast steel 1.0619 seal PTFE for liquid and gaseous media PN 6 to 40 (+ASME B16.5 / ANSI 150 and 300)
disco check valve DN 32 made of Duplex 1.4469 seal NBR for liquid and gaseous media PN 6 to 40 (+ASME B16.5 / ANSI 150 and 300)
disco check valve DN 150 made of spheroidal graphite cast iron 5.3103/GGG40.3 seal EPDM for liquid & gaseous media PN 10-16 DIN EN 1092-1 B1, ASME B16.5 ANSI 150
disco check valve DN 25 made of cast steel 1.0619 seal EPDM for liquid and gaseous media PN 6 to 40 (+ASME B16.5 / ANSI 150 and 300)
disco check valve DN 100 made of cast steel 1.0619 seal PTFE for liquid and gaseous media PN 6 to 40 (+ASME B16.5 / ANSI 150 and 300)
DISCO - Check valve DN 65 made of stainless steel CF8M seal FKM for liquid and gaseous media PN 63 - 100 (+ASME B16.5 ANSI 600 and 900) DIN EN 1092-1 B1
disco check valve DN 32 made of Stainless steel CF8M seal NBR for liquid and gaseous media PN 6 to 40 (+ASME B16.5 / ANSI 150 and 300)
disco check valve DN 200 made of cast steel 1.0619 seal EPDM for liquid and gaseous media PN 10 to 16 (+ASME B16.5 / ANSI 150)
disco check valve DN 125 made of cast steel 1.0619 seal NBR for liquid and gaseous media PN 10 to 40 (+ASME B16.5 / ANSI 150)
disco check valve DN 250 made of cast steel 1.0619 seal PTFE for liquid and gaseous media PN 10 to 16 (+ASME B16.5 / ANSI 150)
disco check valve DN 125 made of spheroidal graphite cast iron 5.3103/GGG40.3 seal PTFE for liquid & gaseous media PN 10-16 DIN EN 1092-1 B1, ASME B16.5 ANSI 150
disco check valve DN 25 made of Duplex 1.4469 seal EPDM for liquid and gaseous media PN 6 to 40 (+ASME B16.5 / ANSI 150 and 300)
DISCO - Check valve DN 40 made of stainless steel CF8M seal FKM for liquid and gaseous media PN 63 - 100 (+ASME B16.5 ANSI 600 and 900) DIN EN 1092-1 B1
disco check valve DN 32 made of cast steel 1.0619 seal EPDM for liquid and gaseous media PN 6 to 40 (+ASME B16.5 / ANSI 150 and 300)
DISCO - Check valve DN 25 made of stainless steel CF8M seal PTFE for liquid and gaseous media PN 63 - 100 (+ASME B16.5 ANSI 600 and 900) DIN EN 1092-1 B1
DISCO - Check valve DN 32 made of stainless steel CF8M seal metall for liquid and gaseous media PN 63 - 100 (+ASME B16.5 ANSI 600 and 900) DIN EN 1092-1 B1
disco check valve DN50 - 2" inch Dichtung aus PTFE für liquid and gaseous media ANSI B 16.5 CL 150
disco check valve DN 125 made of Stainless steel CF8M seal NBR for liquid and gaseous media PN 10 to 40 (+ASME B16.5 / ANSI 150)
disco check valve DN 40 made of Stainless steel CF8M seal NBR for liquid and gaseous media PN 6/10/16/25/40 DIN EN 1092-1 Form B
disco check valve DN 150 made of spheroidal graphite cast iron 5.3103/GGG40.3 seal FKM for liquid & gaseous media PN 10-16 DIN EN 1092-1 B1, ASME B16.5 ANSI 150
disco check valve DN 40 made of cast steel 1.0619 seal FKM for liquid and gaseous media PN 6 to 40 (+ASME B16.5 / ANSI 150 and 300)
Be it for industrial purposes or pipeline constructions, check valves are used if there a special needs regarding the material. This is why check valves are only fabricated from stainless steel and brass. Because of its special design check valves can be used for pipelines both with PN6, PN10, PN16, PN40 and ANSI150 and ANSI300. Thereby the check valves are increasing their flexibility dramatically. Depending on the medium that is flowing through the valve, check valves can be fabricated with an EPDM, NBR, FKM, PTFE or metal seals. DISCO check valves are fabricated with flange connections with a diameter from DN15 up to DN300. Other than that, they can be produced with a male or female thread’s diameter from 1/4“ to 1/2“ inches. Check valves only need a very low cracking pressure of 0.2 bar. Depending on its design, they can be used with pressure up to 700 bar. Because of our modular design special cracking pressures are available upon request. Even special sized check valves can be made possible by our technical experts.
Our online shop offers a huge variety of check valves! If you need any help finding the best check valve for your needs, please fill in our application form. Then, we are going to prepare an individual offer for your needs. We hope you take advantage of our low delivery charges, and we are looking forward to processing your order fastly and with all our expertise! We at NieRuf Industrial Applications will find the perfect product for whatever valve you need!
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
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
Mo - Fr 08:30 - 17:00
or send us an e-mail:
Resistance check 
Frequently asked questions 
Configurator 
Angle seat valves
Ball valves
Butterfly valves
Coaxial valves
Compensators
DISCO check valves
Flow control valve
Globe valves
Knife gate valve
Manometer gauge valve
Needle valves
Overflow valves
Pressure reducing valves
Safety valves
Sight glass
Solenoid valve
Strainer
check valves
diaphragm valve
vent-valve
Need help?
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:
