Limiting Valve 15/20mm


High (mains) pressure systems.

Features & Benefits

Features and Benefits

  • Pressure compensated to give constant outlet pressure regardless of inlet pressure.
  • Extremely high flow rates up to 135 L/min at 700 kPa inlet pressure.
  • No tools required to service valve, all valve seats and piston are contained in the easily replaceable cartridge (VALVE CARTRIDGE DOES NOT NEED REASSEMBLING to clean filter).
  • Removal of cartridge will not affect the set pressures - all valve seats are contained within the cartridge.
  • Valve is adjustable 200 - 600 kPa [29 - 87psi]) with Philips screw driver.
  • No pipe unions, no leaks!
  • Forged, high quality, corrosion resistant DR brass body.
  • Machined, assembled and 100% tested in N.Z.



LV15 Inlet:    15mm, 1/2" BSP (male) Outlet:  20mm, 3/4" BSP (male)
LV20 Inlet:    20mm, 3/4" BSP (female) Outlet:  20mm, 3/4" BSP (male)
LVT15 Inlet:    15mm, 1/2" BSP (male) Outlet:  20mm, 3/4" BSP (male)Takeoff:20mm, 3/4" BSP (male)
LVT20 Inlet:    20mm, 3/4" BSP (female) Outlet:  20mm, 3/4" BSP (male)Takeoff:20mm, 3/4" BSP (male)
  • Length: 80mm (all models)
  • Maximum inlet pressure: 2000 kPa
  • Maximum temperature: 65° C
  • Integral 60 mesh (250 micron) filter.

Flow Chart

Sectional View


Product Codes

LV 15-350 350 kPa (Use with EVT500)
LV 15-500 500 kPa (Use with EVT700)
LV 20-350 350 kPa (Use with EVT500)
LV 20-500 500 kPa (Use with EVT700)
LVT 15-350 350 kPa (Use with EVT500)
LVT 15-500 500 kPa (Use with EVT700)
LVT 20-350 350 kPa (Use with EVT500)
LVT 20-500 500 kPa (Use with EVT700)

Installation & Servicing


  • Refer to Technical Area for installation guide.
  • 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 external application, cartridge must be at bottom.
  • Must be installed with correct Expansion Valve.
  • To adjust outlet pressure remove blue cap at end of cartridge. Insert large Philips/Pozi screw driver & turn adjusting screw clockwise to increase (1 turn = 60 kPa [9psi]).


  • Filter must be cleaned regularly.



  • Complies with NZ Building Code G12 (2001)
  • Complies with NZS 4608: 1992
  • Patent No. 562340
  • Cartridge Watermarked AS1357.2 LICWMKA 02596

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