Series 625

For the protection of pressureless tanks and piping systems to avoid vacuum during discharging or cooling-down.

These vacuum valves are also called „sniffing valves". They open in case of a vacuum and release the air until the vacuum has been alleviated.
 

• Male thread

• emptying of tanks

To protect unpressurized vessels and piping systems from vacuum formation during draining or cooling.
These vacuum valves are also known as "sniffer valves".
It opens in the event of negative pressure and allows air to pass through until the negative pressure is relieved.