Skip to content

Caleffi 533651HA PresCal™ Compact Pressure Reducing Valve with Gauge, 3/4" Press Union x FNPT

Save 36%
Original price $77.30
Current price $49.58
SKU 533651HA
Currently 6 in stock.

Caleffi 533651HA PresCal™ Compact Pressure Reducing Valve with Gauge, 3/4" Press Union x FNPT

The Caleffi PresCal™ 533H compact pressure reducing valve is precision engineered to deliver accurate pressure regulation at a competitive price. Low internal pressure losses produce excellent falloff performance enabling more flow capacity to fixtures. NSF 61 certification to 180°F temperature, anti-scale components and a variety of inlet connection styles add to the high value of the most recognized PRV in the world.


  • Most recognized PRV in the world:  Millions installed in over 60 countries around the world.
  • Removable self-contained cartridge with stainless steel mesh filter:  Maximum debris protection and convenient in-pipe cleaning or replacement.
  • Precision engineered:  
    • Low-lead DZR “Ecobrass” alloy forging resists corrosion from hard water, chlorine and oxygen.
    • Low friction, high-performance moving parts for stable, accurate pressure control. Results in excellent falloff performance and quiet operation.
    • Peroxide-cured EPDM elastomers for chloramine resistance and long life.
  • Installation flexibility:  Variety of inlet union connections: Sweat, NPT, Press, PEX crimp and PEX expansion.
  • Tamper-resistant cap:  Black tamper-resistant cap is included to prevent unauthorized set point adjustments.
  • Hot water boost system compatible:  Rated to 180ºF. Certified to NSF 61, ASSE 1003, CSA B356 and NSF 372.



  • Max. Working Pressure:  250 psi (17.25 bar)
  • Setting Pressure Range:  15 - 80 psi (1.0-5.5 bar)
  • Factory Setting:  45 psi (3 bar)
  • Max. Working Temperature:  180°F (80°C)


Compliance with the following codes:  IPC, IRC, UPC and NPC for use in accordance with the U.S. and Canadian plumbing codes

Compliance with the following standards:  
     ASSE 1003
CSA B356
     NSF/ANSI 61
, Drinking Water System Components - Health Effects
     Reduction of Lead in Drinking Water Act, California Health and
                  Safety Code 116875
      S.3874, Reduction of Lead in Drinking Water Act
      UL 2043, Plenum Rating   


    Technical Brochure

    Sell Sheet

    Instruction Sheet