Safety Relief Valve for Gas Systems

With the new ULTRAVENT 6 safety relief valve, even the smallest increases in gas pressure, from 5 mbar upwards, can be controlled. Based on DIN EN ISO 4126-1, this extremely compact valve from WITT offers unprecedented blow-off performance and has outstandingly accurate opening and closing behavior, reproducible even in this millibar range.

Sensitive systems, vessels and production processes are thus safely and reliably protected against overpressure. For example, ULTRAVENT safety relief valves offer the precision and flow capacity required to protect low pressure hydrogen electrolysers, up to 270 °C. In addition, these top-quality valves can also be used as vacuum breakers or control valves.

Model 6 is the first and smallest valve in the brand new WITT ULTRAVENT product range. Further models will follow shortly. It is a direct-acting, spring-loaded valve that opens and blows off when the opening pressure is exceeded. After pressure equalisation, the valve closes automatically. As a purely mechanical solution, the safety valve is significantly less complex, lower cost and also more reliable than more complex combinations of pressure transmitters and solenoid valves.