safety element: non-return valve [NV]
every
also ideal for use with corrosive gases
low opening pressure approx. 250 mbar
52 X 65 mm, 589-745 g
WITT non-return valves (check valves) for reliable protection against dangerous reverse gas flow. Every non-return valve (check valve) 100% tested.
Benefits:
a spring-loaded non-return valve (check valve) prevents a reverse flow of gases which could lead to unwanted gas mixtures
low opening pressure approx. 250 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
Operation / Usage:
non-return valves (check valves) are used to protect equipment and pipelines against dangerous reverse gas flow
the maximum ambient / working temperature is 70 °C / 158 °F
Maintenance:
annual testing of the non-return valve (check valve), body leak tightness and flow capacity 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 to ISO 9001and PED 97/23/EC Module H
CE-marked in accordance with PED 97/23/EC
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