Maintains the upstream pressure at the minimum set point value and releases any excess.

Examples of use:

- Tank supply with minimum pressure maintained on the upstream network
- Protection against network overpressures by discharge to atmosphere
- Pump protection at start-up or with low flow rate.
- Variants in allowable operating pressure (PFA) 16 and 25: Please contact us
- Variants in the pilot pressure setting 0.1-2 bar and 7.0-21.0 bar: Please contact us