Stainless steel pressure reducing valves are independent of the primary pressure and depending on the pressure range, are either piston or membrane controlled, spring-loaded proportional regulators. They are used to maintain the reduced pressure at a constant, adjustable set value.

If the pipeline is depressurised and the spring is pre-tensioned, the piston plate (membrane) is pushed into the open position with the piston and the disc. The medium flows between the seat and the disc and is throttled. The reduced pressure to be regulated acts via the impulse bore on the piston plate (membrane) and generates a closing force that is compared to the adjustable spring force (set value). If the reduced pressure increases, the piston plate (membrane) with the disc moves in the closing direction and if the reduced pressure decreases it moves in the opening direction.
When the reduced pressure reaches the set value for the existing flow rate, the forces are balanced. If the reduced pressure increases further, the disc moves in the closing direction and seals the valve.

Pressure reducing valves for food and pharmacy technique

Pressure reducing valves for other traditional industrials and food & pharmaceutical sanitary industries are primary pressure-relieved proportional controllers and depending on the minimum pressure range, either spring loaded or air loaded piston or membrane-controlled, maintaining a constant pressure in the pressure vessel.
They are used to keep the outlet pressure P2 at a constant adjustable reference value with fluctuating primary pressures P1 and fluctuating flow volumes.
Nominal pressures : PN 1.6 to PN 180
Connections : G 1/8 to G 2 ½ or DN 8 to DN 100
Process connections : normal commercial thread, screw, clamp or flange connections, All aseptic connections
Materials : Stainless Steel1.4301, 1.4571, 1.4404, 1.4435
Sealing Materials : EPDM, PTFE, SILICON, FKM, FFKM etc. as well as elastomer and thermo plastic element seals, compliance FDA & USP Class VI
Surface Polished : Mechanical or electrochemical polished surface finishing max. Ra≤0.25um for valve interior and external
Control Type : Piston / membrane-controlled
Minimum pressure range P2 : 0.005 bars to max. 80 bars
Flow mediums : gases, steam and liquids




Pressure reducing valves for other traditional industry

Nominal pressures : PN 1.6 to PN 600
Connections : G 1/8 to G 2 ½ or DN 8 to DN 100
Process connections : normal commercial thread, screw, flange connections
Materials : Ductile Iron, Cast Iron, Cast Steel, Aluminum Bronze, Bronze, Stainless Steel, All Kind of Materials Customize
Control Type : Piston / membrane-controlled
Minimum pressure range P2 : 0.005 bars to max. 232 bars
Flow mediums : gases, steam and liquids