Millibar overflow valve DN40 flange type UV17 stainless steel 50 - 500 mbar seal FKM / PTFE for neutral gaseous media
piston overflow valve DN 32 type UV13 made of grey cast iron EN-JL1040 pressure range 2,0 - 5,0 bar seal metall for liquid and gaseous media
flange overflow valve DN 40 PN40 type UV11 made of stainless steel CF8M / 316L pressure range 0,5 - 2,0 bar seal EPDM for liquid and gaseous media
overflow valve DN 50 PN40 type UV09 made of gunmetal/brass pressure range 0,5 - 2,0 bar seal EPDM for liquid and gaseous media
piston overflow valve DN 80 type UV13 made of cast iron 1.0619+N pressure range 1,0 - 3,0 bar seal metall for liquid and gaseous media
piston overflow valve DN 15 type UV13 made of cast iron 1.0619+N pressure range 0,5 - 1,5 bar seal metall for liquid and gaseous media
piston overflow valve DN 100 type UV13 made of SG iron EN-JS1049 pressure range 2,0 - 5,0 bar seal metall for liquid and gaseous media
piston overflow valve DN 15 type UV13 made of stainless steel AISI 316L pressure range 4,0 - 10,0 bar seal metall for liquid and gaseous media
We can manufacture the flange-overflow-valves in the nominal sizes DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80 and DN100. The preset pressure can range from 0,5 bar to 10 bar. The seal can be made of FKM, EPDM or metal. The valve itself can be made of stainless steel, spheroidal graphite iron, red brass, grey cast iron or cast iron, depending on the requirements. Approvals like TA air are available, just like material certificates and individual acceptance e.g. by TÜV. Our UV13 series can be used in temperatures of up to +450°C, depending on the material. Due to the high nominal sizes, high KV and KVS factors can be reached. If you need any additional information on flange-overflow-valves, please do not hesitate to contact our NieRuf team.
Overflow-valves with flange connection usually work proportional, which means that if power P1 (input pressure) is higher than P2 (spring force), the valve opens. The stroke variation happens with the pressure increase, the opening of the valve releases the excess pressure, which reduces the pressure in the system. Once the pressure drops and P2 is again higher than P1, the valve closes and pressure can build up. This makes overflow-valves with flange connection ideal to secure important valves and system components.
Special requests, spare parts or a quick support? Our staff will answer your questions and concerns immediately.
Mon. - Fri. from 08:30 - 17:00
Phone: +49 7143/9666-901
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
Check valves
Coaxial valves
Compensators
DISCO check valves
Diaphragm valve
Flow control valve
Gate valves
Globe valves
Knife gate valve
Manometer gauge valve
Needle valves
Overflow valves
Pressure reducing valves
Safety valves
Sight glass
Solenoid valve
Stainless steel hoses
Strainer
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:
