Reducing Cartridges

Reducing cartridges are normally open pressure control elements designed to reduce a high primary pressure at port 2 (inlet) to a controlled lower pressure (reduced pressure) at port 1 (outlet). The reduced pressure is determined by the spring adjustment plus any pressure at port 3 (adjustment spring chamber drain).

Sun Hydraulics reducing cartridges are available in variety of configurations with flow rates up to 80 gpm (320 L/min.).

  • Functionally interchangeable with reducing/relieving cartridges (same flow path, same cavity for a given frame size)
  • Fully adjustable up to and including 4500 psi (315 bar) with inlet pressures up to 5000 psi (350 bar), except air-piloted versions

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25 Matching Models
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Symbol Description Model Capacity Cavity
 
Pilot operated, pressure reducing valve Pilot operated, pressure reducing valve PBBB 5 gpm20 L/min. T-163A
PBDB 10 gpm40 L/min. T-11A
PBFB 20 gpm80 L/min. T-2A
PBHB 40 gpm160 L/min. T-17A
PBJB 80 gpm320 L/min. T-19A
 
Air-controlled, pilot operated, pressure reducing valve Air-controlled, pilot operated, pressure reducing valve PBFC 20 gpm80 L/min. T-2A
PBHC 40 gpm160 L/min. T-17A
PBJC 80 gpm320 L/min. T-19A
 
Direct-acting, pressure reducing valve Direct-acting, pressure reducing valve PRDR 10 gpm40 L/min. T-11A
PRFR 20 gpm80 L/min. T-2A
PRHR 40 gpm160 L/min. T-17A
PRJR 80 gpm320 L/min. T-19A
PRBR 5 gpm20 L/min. T-163A
 
Pilot operated, pressure reducing main stage with integral T-8A control cavity Pilot operated, pressure reducing main stage with integral T-8A control cavity PBDB8 10 gpm40 L/min. T-11A
PBFB8 20 gpm80 L/min. T-2A
PBHB8 40 gpm160 L/min. T-17A
PBJB8 80 gpm320 L/min. T-19A
 
Pilot operated, pressure reducing main stage with drilled piston orifice and integral T-8A control cavity Pilot operated, pressure reducing main stage with drilled piston orifice and integral T-8A control cavity PBDF8 10 gpm40 L/min. T-11A
PBFF8 20 gpm80 L/min. T-2A
PBHF8 40 gpm160 L/min. T-17A
PBJF8 80 gpm320 L/min. T-19A
 
Pilot operated, pressure reducing valve with drilled piston orifice Pilot operated, pressure reducing valve with drilled piston orifice PBDF 10 gpm40 L/min. T-11A
PBFF 20 gpm80 L/min. T-2A
PBHF 40 gpm160 L/min. T-17A
PBJF 80 gpm320 L/min. T-19A
 
Symbol Description Model Capacity Cavity
 
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QuickSelect™ LoadHolding Selector