Within a pipeline system under pressure, different volume flow rates are a common problem. They can harm or even destroy the system. Mostly, the cause lies in the late or non-existing control over the media, for example a pump, which causes the pressure. As a result, the pump continues to build up pressure even when the pressure is already too high. This results in damage to the pump, or even in an explosion that destroys the entire system and might harm people and can cause tremendous amount of loss. Overflow valves from NieRuf industrial valves are the solution to this problem.
piston overflow valve DN 25 type UV13 made of SG iron EN-JS1049 pressure range 2,0 - 5,0 bar seal metall for liquid and gaseous media
straightway form overflow valve 2" inch male type UV06 made of gunmetal/brass pressure range 1,5 - 6,0 bar seal FKM for liquid and gaseous media
overflow valve 1" inch female type UV16 made of stainless steel 316 L/CF8M pressure range 0,5 - 2,5 bar seal EPDM for liquid and gaseous media
piston overflow valve DN 40 type UV13 made of cast iron 1.0619+N pressure range 0,5 - 1,5 bar seal metall for liquid and gaseous media
flange overflow valve DN 50 PN40 type UV09 made of gunmetal/brass pressure range 5,5 - 10,0 bar seal EPDM for liquid and gaseous media
overflow valve 3/4" inch female type UV16 made of stainless steel 316 L/CF8M pressure range 0,2 - 0,8 bar seal FKM for liquid and gaseous media
piston overflow valve DN 20 type UV13 made of SG iron EN-JS1049 pressure range 2,0 - 5,0 bar seal metall for liquid and gaseous media
angle-type overflow valve 1 1/2" inch fm type UV03 made of stainless steel AISI 316L pressure range 0,5 - 2,5 bar seal FKM for liquid and gaseous media
piston overflow valve DN 65 type UV13 made of grey cast iron EN-JL1040 pressure range 0,5 - 1,5 bar seal metall for liquid and gaseous media
straightway form overflow valve 1" inch female type UV07 made of stainless steel AISI 316L pressure range 1,5 - 6,0 bar seal EPDM for liquid and gaseous media
straightway form overflow valve 2" inch male type UV07 made of stainless steel AISI 316L pressure range 0,5 - 2,0 bar seal EPDM for liquid and gaseous media
overflow valve 1" inch female type UV16 made of stainless steel 316 L/CF8M pressure range 0,2 - 0,8 bar seal PTFE for liquid and gaseous media
angle-type overflow valve 3/8" inch fm type UV03 made of stainless steel AISI 316L pressure range 0,2 - 0,8 bar seal FKM for liquid and gaseous media
angle-type overflow valve 1 1/4" inch male type UV15 stainless steel 16,0 - 25,0 bar seal PTFE for liquid and gaseous media counter pressure compensated up to 4 bar
flange overflow valve DN 15 PN40 type UV12 made of stainless steel AISI 316L pressure range 5,5 - 10,0 bar seal FKM for liquid and gaseous media
flange overflow valve DN 40 PN40 type UV11 made of stainless steel AISI 316L pressure range 5,5 - 10,0 bar seal EPDM for liquid and gaseous media
angle-type overflow valve 1 1/4" inch male type UV14 gunmetal 1,4 - 3,0 bar seal PTFE for liquid and gaseous media counter pressure compensated up to 4 bar
angle-type overflow valve 1 1/2" inch male type UV15 stainless steel 0,5 - 0,9 bar seal PTFE for liquid and gaseous media counter pressure compensated up to 4 bar
straightway form overflow valve 1 1/4" inch male type UV05 made of gunmetal/brass pressure range 5,5 - 10,0 bar seal EPDM for liquid and gaseous media
flange overflow valve DN 65 PN40 type UV10 made of gunmetal/brass pressure range 1,0 - 6,0 bar seal FKM for liquid and gaseous media
piston overflow valve DN 15 type UV13 made of grey cast iron EN-JL1040 pressure range 4,0 - 10,0 bar seal metall for liquid and gaseous media
angle-type overflow valve 1" inch male type UV15 stainless steel 14,0 - 25,0 bar seal PTFE for liquid and gaseous media counter pressure compensated up to 4 bar
piston overflow valve DN 40 type UV13 made of stainless steel AISI 316L pressure range 1,0 - 3,0 bar seal metall for steam
pressure regulator valve 1" inch fm type UV04 made of stainless steel AISI 316L pressure range 0,5 - 2,5 bar seal PTFE for liquid and gaseous media
In order to protect a system or container, overflow valves (also called bypass valves or control valves) can be used. Once the pressure is too high, the valve activates a bypass, which reduces the pressure within the system. The media now flows through the open overflow valve, and the bypass leads it back into the flow of the pump, thereby creating a separate loop. The media continues to flow through the bypass valve, until the pressure within the system is reduced and causes the overflow valve to close again.
Here at NieRuf, you will find the control valve that suits your needs. Our overflow valves can be delivered adjusted and sealed to a specific pressure, or adjustable. It is possible to adjust the valve while the system is running without any leakage. We provide overflow valves in the following nominal sizes: 3/8“, ½“, 3/4“, 1“, 1 ¼“, 1 ½“, und 2“. They come with thread connections or flange connections in the nominal sizes DN20, DN25, DN32, DN40, DN50, DN65 or DN80. Depending on the media, the overflow valves come with EPDM, FKM / Viton or PTFE seals in order to assure a maximum of tightness. Their pressure range varies from 0,5 – 20,0 bar. Whether you need stainless steel or gunmetal overflow valves or bypass valves, NieRuf is your expert. Inquire for specific relief valves, and we will be happy to help.
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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