Application
Low, medium and high (mains) pressure hot water systems.
Features/Benefits
- Energy saving valve - relieves cold water rather than hot, saving electricity
- Flushing lever/handle to clear foreign matter from valve seat - can also be used as cylinder drain.
- Silicone rubber washers and non-corrosive valve seat materials mean long life - no heat loop required.
- Failsafe against cylinder over pressure
- Special factory settings between 75 and 750 kPa available on request
- N.Z. forged, high quality, corrosion resistant DR brass body
- Machined, assembled and 100% tested in N.Z.
Video
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Low Pressure Cold Water Expansion Valve. |
| Run-time: 20 seconds |
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High Pressure Cold Water Expansion Valve. |
| Run-time: 25 seconds |
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Standards
- Complies with NZ Building Code G12 (2001)
- Complies with NZS 4607:1989
- Manufactured to NZS 4608:1992
Specifications
| Inlet/Outlet/Takeoff: |
20mm, 3/4" BSP (male) |
| Drain: |
15mm, 1/2" BSP (male) |
| Length: |
EVT Low Pressure: 62mm
EVT High Pressure: 70mm |
- Standard pressure settings
- 75 kPa [11psi]
- 120 kPa [17psi]
- 500 kPa [72psi]
- 700 kPa [100psi]
- Pressure settings between 75 and 700 kPa [11 and 100psi] may be factory set for special applications.
- Maximum temperature: 99˚C.
- Minimum temperature: 1˚C.
- Kilowatt rating: 20kw
Installation
- Refer to Technical Area
for installation guide.
- If 1.0 meter minimum head can't be achieved between EVT and RV then use EVT under-bench model (See
VP75U/VP120U)
- Do NOT apply heat near valve during installation.
- Pressure limiting valve or pressure reducing valve must be fitted.
Thermal Expansion
Under normal conditions, a 180 litre hot water cylinder when heated from cold to 65°C will expel 3.6 litres (12.6 meters of 20mm copper pipe) of water due to thermal expansion. The amount of
expansion will vary depending on the volume of hot water used and cylinder capacity.
Accessories
- Non-return (mains pressure only): To prevent
cross-connection of hot water to cold water supply.
- Cap: Should second take off not be required.
Sectional View
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Product Codes
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