Non-return Valve / Check Valve ULTRA 42

Based on ULTRA 40 – your customised design: multiple combinations of housing and seal materials, with or without filter

free combination of material for housing (brass, stainless steel, aluminum) and seal (NBR/CR, FPM/FKM, EPDM/FFKM), with or without filter
for special requirements e.g. corrosive environments, acetylene, lightweight construction, temperatures above 70 °C/ 158 °F

based on ULTRA 40 including:

safety element: non-return valve [NV]
every non-return valve 100% tested
DIN EN ISO 5175-2
ultra-low opening pressures (approx. 5 mbar), ultra-low pressure drop
compact dimensions: 114 X 146 mm, 7.1 kg, G 2.1/2"

Information

WITT non-return valves for reliable protection against dangerous reverse gas flow. Flow-optimised valve system causes very low pressure drop at minimal noise emission. Every non-return valve 100% tested.

ULTRA 42 is based on ULTRA 40 and is customised according to the requirements of the customer - ideal for special requirements. A modular system which allows flexible material combinations for housing and sealings.

Combination possibilities

housing available in brass, stainless steel or aluminium
sealings of NBR, CR, FKM, EPDM, FFKM for example
with or without dirt filter in gas inlet

Benefits

precisely tailored design for special requirements. For example corrosive environments, acetylene, ultra-lightweight construction, temperatures above 70 °C / 158 °F
a spring loaded non-return valve prevents back feeding of gases which could lead to unwanted gas mixtures
low pressure drop – using complex valve assembly with low opening pressures (approx. 5 mbar)
stainless steel filter (100 μm) in the gas inlet protects the non-return valve against dirt contamination, extending the service life
flow-optimised valve system for:

- ultra low pressure drop
- minimal noise emission

no leaks – using of a spring loaded valve assembly with elastomer sealing
in accordance to DIN EN ISO 5175-2
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 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 may be mounted in any position / orientation

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 according to ISO 9001 and PED 2014/68/EU Module H
CE-marked according to PED 2014/68/EU
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