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Pressure Limiting Valve
Application

High (mains) pressure systems.

Features/Benefits
  • Pressure compensated to give constant outlet pressure regardless of inlet pressure.
  • N.Z. forged, high quality, corrosion resistant DR brass body
  • Machined, assembled and 100% tested in N.Z.
  • No tools required to service valve.
  • Easily adjustable outlet pressure range of 200 to 600 kPa [29 - 87psi]) with Philips screw driver.
  • All valve seats and pistons 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.
  • No pipe unions, no leaks!
Video
 Limiting Stop Valve.
 Run-time: 52 seconds

Standards
  • Complies with NZ Building Code G12 (2001)
  • Manufactured to NZS 4608: 1992
  • Cartridge Water marked AS1357.2 LICWMKA 02596
Specifications

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)
LVT20 Inlet 20mm, 3/4" BSP (female)
Outlet 20mm, 3/4" BSP (male)
  • High flow rates up to 135 l/m.
  • Integral 60 mesh (250 micron) strainer.
LVH20500 Inlet 20mm, 3/4" BSP (male)
Outlet 20mm, 3/4" BSP (male)
  • Designed to protect high pressure (mains) systems & ring mains running hot water up to 80 C
  • High flow rates up to 75 l/m.
  • Outlet pressure factory set at 500 kPa (fully compensated).
  • Maximum inlet pressure: 2000 kPa [290psi].
  • Integral 60 mesh (250 micron) strainer.
LV25 Inlet 25mm, 1" BSP (male)
Outlet 25mm, 1" BSP (male)
LV32 Inlet 32mm, 1 1/4" BSP (male)
Outlet 32mm, 1 1/4" BSP (male)
  • Extremely high flow rates up to 250 l/m.
  • Twin, integral 60 mesh (250 micron) strainers.
LSV20 Inlet 20mm, 3/4" BSP (male)
Outlet 20mm, 3/4" BSP (male)
  • Compact 4-in-1 valve - limiting, isolating, non-return and filter all in one.
  • High flow rates up to 135 l/m.
  • Can be installed outside (with cartridge down).
  • Integral 60 mesh (250 micron) strainer.
LSV20H500 Inlet 20mm, 3/4" BSP (male)
Outlet 20mm, 3/4" BSP (male)
  • Designed to protect high pressure (mains) systems running hot water up to 80 C
  • Compact 3-in-1 valve - limiting, isolating and filter all in one.
  • Flow rates up to 75 l/m.
  • Outlet pressure factory set at 500 kPa (fully compensated).
  • Integral 60 mesh (250 micron) strainer.
  • Precision machined from extruded DR Brass (including filter cap & isolation bonnet).

LVA Inlet 20mm, 3/4" BSP (female)
Outlet 20mm, 3/4" BSP (male)
LVRA Inlet 20mm, 3/4" BSP (female)
Outlet 20mm, 3/4" BSP (male)

Length LV  (all models except LV25 & LV32) 80mm
LV25 110mm
LV32 115mm
LSV & LSVH 140mm
LVRA 70mm


All models unless otherwise stated:
  • Maximum inlet pressure: 1600 kPa [230psi].
  • Adjustable outlet pressure: 200 to 600 kPa [29 - 87psi].
  • Maximum inlet temperature: 65C.
  • Minimum temperature: 1C.
Flow Chart


Installation
  • 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 fitted down stream of a limiting valve.
  • To adjust outlet pressure use large Philips/Pozi screw driver, turn adjusting screw clockwise to increase (1 turn = 60 kPa [9psi]).
Removable Cartridge
  • All valve seats are contained within cartridge.
  • No need to remove body from valve train.
  • Unscrew cartridge to replace or clean filter.
  • Removal of cartridge will not affect set pressure.
Servicing
  • Filter must be cleaned regularly.
Sectional Views

LV15 & LV20
LV25 only
LSV
LVRA

LV15


LVT20


LVH20500


LSV20


LSV20H500


LVRA


LV25


LV32

Brochure
Download the new LV25 and LV32 Pressure Limiting Valve brochures in PDF format or contact us to have them sent to you.



LV25 Brochure




LV32 Brochure


Product Spec Sheets

LVH20500

LSV20H500


Product Codes

LV15350 350 kPa Use with EVT500
LV15500 500 kPa Use with EVT700
LV20350 350 kPa Use with EVT500
LV20500 500 kPa Use with EVT700
LVH20500 500 kPa Use with EVT700
LV25-500 500 kPa Use with EV25
LV32500 500 kPa Use with EV32
LVT15350 350 kPa Use with EVT500
LVT15500 500 kPa Use with EVT700
LVT20350 350 kPa Use with EVT500
LVT20500 500 kPa Use with EVT700
LSV20350 350 kPa Use with EVT500
LSV20500 500 kPa Use with EVT700
LSV20H500 500 kPa Use with EVT700
LVA20350 350 kPa Use with 500 kPa Expansion Control Valve
LVA20500 500 kPa Use with 850 kPa Expansion Control Valve
LVA20600 600 kPa Use with 850 kPa Expansion Control Valve
LVRA20350 350 kPa Use with 500 kPa Expansion Control Valve
LVRA20500 500 kPa Use with 850 kPa Expansion Control Valve
LVRA20600 600 kPa Use with 850 kPa Expansion Control Valve

Note: All limiting valves must be protected by a downstream expansion valve of the relative setting as prescribed in the table above.


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