Pressure relief valves SDD 912 limits the static pressure to a constant and maximal settled value by opening the outlet (to the discharge line) when the pressure is overriding.

The right angle concept allows small dimensions with a reduced weight for easiest fitting on line than any conventional in-line straight pressure relief valve.

All wetted parts are in plastics; without any metallic parts exposed to the atmosphere it allows a location in corroding vapours.

The SDD 912 valves may be used as pressure relief valves on volumetric pumping system.

These equipment protection devices have to be fitted on by-pass.

Body: PVC
Seat seal and O-rings: FPM
Wetted parts: PPH and PPG (Glass fibre reinforced Polypropylene)
Relief pressure: 1 to 10 bar
Pressure class: PN 10 (at 20°C) ; [bar]
Temperature limits: +10 ... +50°C
Inlet / outlet size: ND 32 to ND 50
Hysteresis: Approximately 0.5 bar
Connections: PVC unions, solvent welding
PVC loose flange
Flow rate limit: 3 m/s as a maximum