Non-Return Valve NV100

Non-return valve for the prevention of unintended gas mixtures, for flow rates up to 11,059 scfh (air), up to 362 psi, G 1/8 - 3/8

safety element: non-return valve [NV]
every non-return valve 100% tested
ultra-low opening pressures (approx. 0.0296 psi), ultra-low pressure drop
compact and light: 0.98 X 2.77-3.78 inches, 1.56 oz

This model is also available in Stainless Steel

Information

WITTnon-return valves (check valves) for reliable protection against dangerous reverse gas flow.
Every non-return valve (check valve) 100% tested.

The best non-return valves (check valves) in the world.

Benefits:

a spring-loaded non-return valve (check 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 (check 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

Operation / Usage:

non-return valves (check valves) are used to protect equipment and pipelines against dangerous reverse gas flow. Use is possible for applications according to EN 746-2
WITT non-return valves (check valves) may be mounted in any position / orientation
the maximum ambient / working temperature is 70 °C / 158 °F

Maintenance:

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

Approvals
Company certified ISO 9001
Designed for Oxygen Service according to EIGA IGC Doc 13/12/E: 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