Non-Return Valve NV654

WITT non-return valves for reliable protection against dangerous reverse gas flow. Every non-return valve 100% tested.

Benefits:

• a spring-loaded non-return valve prevents a reverse flow of gases which could lead to unwanted gas mixtures
• low pressure drops – using complex valve assembly with low opening pressures (approx. 30 mbar)
• no leaks – using a spring-loaded valve assembly with elastomer sealing
• diverse applications – useful for many technical gases
• reduce installation costs – the spring-loaded valve is not affected by gravity and may be installed in any orientation
• compact design, small mounting dimensions

Operation / Usage:

• non-return valves are used to protect equipment and pipelines against dangerous reverse gas flow
• WITT non-return valves may be mounted in any position / orientation
• the maximum ambient / working temperature is 60 °C / 140 °F

Maintenance:

• annual testing of the non-return valve and body leak tightness is recommended
• WITT is happy to supply special test equipment
• non-return valves are only to be serviced by the manufacturer

Approvals

Company certified to ISO 9001 and PED 2014/68/EC Module H

Designed for Oxygen Service in accordance with EIGA 13/20 and CGA G-4.4: Oxygen Pipeline and Piping Systems

Cleaned for Oxygen Service in accordance with EIGA 33/18 and CGA G-4.1: Cleaning of Equipment for Oxygen Service