Specially designed from operation at very low atmospheric temperatures where there is a high risk of the valve freezing (tested down to -30°C).

These Breather valves maintain the tank pressure within a range of atmospheric pressure:
standard exhaust starting pressure +25mm Water (+245Pa)
standard intake starting pressure -25mm water (-245Pa)

Other pressures are available on request,the range available is:
exhaust pressure +25 to+50mm of water (+245 to +490Pa)
- intake pressure -25 to-50mm of water (-245 to -490Pa)

Sizes available:
3" to 10"