Limiting Valve, 25/32mm


For extremely high flow, high demand mains pressure systems e.g. large homes, multi-storey apartments and commercial applications.
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Features & Benefits

Features and Benefits

  • Extremely high flow rates 250 L/min
  • Pressure compensated to give constant outlet pressure regardless of inlet pressure
  • Twin adjustable (200 -600 kPa), replaceable cartridges for easy servicing
  • All valve seats are contained in the cartridges -no need to remove valve body from system
  • Can be installed in any orientation, for external application a cap is provided to protect cartridge
  • Forged, high quality, corrosion resistant DR brass body
  • Machined, assembled and 100% tested in N.Z
  • No unions, no leaks



LV 25    Inlet:   25mm 1" BSP (male) &nbsp     Outlet:   25mm, 1" BSP (male) &nbsp     Length: 110mm &nbsp     Height: 190mm LV 32    Inlet:   32mm, 1 1/4" BSP (male) &nbsp     Outlet: 32mm, 1 1/4" BSP (male) &nbsp     Length: 110mm &nbsp     Height: 190mm
  • Maximum inlet pressure: 2000 kPa
  • Maximum inlet temperature: 65°C
  • Twin, integral 60 mesh (250 micron) strainers

Flow Chart

Product Codes

LV 25      25mm, 1" BSP (500 kPa) LV 32      32mm, 1 1/4" BSP (500 kPa)

Installation & Servicing


  • Do NOT install Limiting Valve in the ground
  • Do NOT apply heat near valve during installation
  • Install so that both hot and cold supplies are balanced
  • Can be installed in any orientation. For outdoor application, fit dust cap to top cartridge
  • Must be installed with correct Expansion Valve
  • To adjust outlet pressure, remove blue cap at end of cartridge. Insert large Philips screw driver, turn adjusting screw clockwise to increase (1 turn = 60 kPa)


Filter must be cleaned regularly



  • Patent No. 577660
  • Complies with N.Z Building code G12 (2001)
  • Complies with NZS 4608
  • Cartridges Watermark approved to AS1357.2 Lic. No. WMKA 02596

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