The overflow valve is characterised by the fact that it ensures a continuous and quiet pressure reduction when used on tanks for the storage of cryogenic liquefied technical gases such as argon, oxygen, nitrogen or carbon dioxide.

The overflow valve is adjusted to a pressure below the set pressure of the safety valves and thus prevents the safety valves of the tank from reacting.

When the safety valves are fully opened, loud outflow noises are generated, which in most cases also significantly exceed the Immission guide value of TA Lärm (technical instructions for protection against noise) and deprive the neighbourhood from sleep.

Thus, the response of the safety valves is often interpreted as a malfunction of the storage system and leads to the activation of the emergency plan including fire brigade, police and rescue services.

Using the overflow valve type 2580 can prevent this scenario.

connection types

• Internal pipe thread
• Male thread

usage

• Containers and pipelines for the storage and transport of cryogenic liquified gases such as LIN, LOX, LAr, CO2, LNG.
• Tunnel freezing plants
• Dry ice blasting systems
• Cryogenic plant engineering
• Cryogenic grinding process
• Cryogenic machining
• Ground freezing plants
• Plants for cryogenic gases which come into contact with foodstuffs

Overflow valves of this policy are always manufactured free of oil and grease.