Application
High and low pressure hot water systems.
Features/Benefits
- Extremely high flow rates make the TV20 and TV25 valves suitable for low pressure systems, e.g. header tanks, open
vented and low head systems (see flow chart below). The TV25 is also suitable for high
demand mains pressure systems.
- Valve can installed in any orientation.
- The tamper proof tempering valve (TV20TP) is suited to applications where the potential for the vandalism and incorrect
adjusting is high. The tamper proof valve has the same specifications as our TV20 valve but is easily distinguished from our
standard products by its red ball cap.
- Advanced temperature control makes the TV15P ideal for direct connection to a sanitary fixture, e.g. hand basin..
- Failsafe shutdown in the event of failure of hot and cold supplies.
- N.Z. forged, high quality, corrosion resistant DR brass body
- Machined, assembled and 100% tested in N.Z.
Video
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Tempering Valve - Temperature Settings. |
| Run-time: 26 seconds |
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Tempering Valve - Pressure Ratings. |
| Run-time: 17 seconds |
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Standards
- Complies with NZ Building Code G12 (2001)
- Complies with NZS 4617:1989
- N.Z. Patent No. 517764
- Aust. Patent No. 2003200856
- RSA. Patent No. 2003/1992
Specifications
| Overall length: |
| TV12 |
110mm |
| TV15 |
100mm |
| TV15P |
100mm |
| TV20 |
105mm |
| TV20D |
130mm |
| TV20S |
130mm |
| TV25 |
135mm |
| TV25S |
135mm |
| Inlets: |
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Hot Inlet |
Cold inlet |
| TV12 |
15mm, ½" BSP (male) |
12mm John Guest |
| TV15 |
15mm, ½" BSP (male) |
15mm, ½" BSP (male) |
| TV15P |
15mm, ½" BSP (male) |
15mm, ½" BSP (male) |
| TV20 |
20mm, ¾" BSP (male) |
20mm, ¾" BSP (male) |
| TV20D |
20mm, ¾" BSP (male) |
20mm, ¾" BSP (male) |
| TV20S |
20mm, ¾" BSP (male) |
20mm, ¾" BSP (male) |
| TV25 |
25mm, 1" BSP (male) |
25mm, 1" BSP (male) |
| TV25S |
25mm, 1" BSP (male) |
25mm, 1" BSP (male) |
| Outlet: |
| TV12 |
12mm John Guest |
| TV15 |
15mm, ½" BSP (male) |
| TV15P |
15mm, ½" BSP (male) |
| TV20 |
20mm, ¾" BSP (male) |
| TV20D |
20mm, ¾" BSP (male) |
| TV20S |
20mm, ¾" BSP (male) |
| TV25 |
25mm, 1" BSP (male) |
| TV25S |
25mm, 1" BSP (male) |
| Minimum inlet pressure: (above highest outlet) |
| TV12 |
20 kPa (2m head) [2.9psi (6' 6¾")] |
| TV15 |
30 kPa (3m head) [4.4psi (9' 10")] |
| TV15P |
30 kPa (3m head) [4.4psi (9' 10")] |
| TV20 |
20 kPa (2m head) [2.9psi (6' 6¾")] |
| TV20D |
30 kPa (3m head) [4.4psi (9' 10")] |
| TV20S |
30 kPa (3m head) [4.4psi (9' 10")] |
| TV25 |
20 kPa (2m head) [2.9psi (6' 6¾")] |
| TV25S |
20 kPa (2m head) [2.9psi (6' 6¾")] |
- Maximum inlet pressure: 1000 kPa [145psi] (TV25 & TV25S up to 1600 kPa [235psi]).
- Maximum inlet temperature: 99˚C all models except for Solar (TV20S/TV25S - 110˚C constant).
- Outlet temperature: (factory set): 55˚C.
- Minimum temperature: 1˚C.
- Adjustable outlet temperature: 35˚C - 60˚C.
- DR (Dezincification Resistant) brass.
Flow Chart
Installation
Typical TV15P Hand Basin Installation
- Refer to Technical Area for
installation guide.
- Valve must be fitted by a qualified plumber.
- Installation must comply to local authority requirements.
- Standard tempering valves are designed to be installed close to the water heater, or at an
acceptable distance from a plumbing fixture. Do NOT install a standard tempering valve at point of
use.
- TV15P should be used as a point of use tempering valve.
- Valve may be installed horizontally or vertically.
- Flush pipes prior to fitting.
- Valve must be protected by a filter.
- Connections are H (hot inlet), C (cold inlet) and MIX (mixed outlet).
- Do not apply heat near valve during installation, this may damage element.
- Do not install in outlet of cylinder.
- Provide minimum 150mm heat loop.
- Balanced pressure recommended, unequal up to 5.1 (cold to hot) ratio, non-return must be fitted to
hot inlet.
- Cylinder thermostat setting must be set 10˚C above valve outlet
temperature (minimum cylinder temperature 65˚C).
- Non-returns are required on hot and cold inlets for ring main installations.
Temperature Adjustment
Remove cap.
Use screwdriver to adjust to desired temperature. To increase temperature turn anticlockwise (H), to decrease temperature turn adjusting screw clockwise
(C). Replace cap. maximum delivered hot water temperature at any sanitary fixture used for personal hygiene shall not exceed 55˚C.
For childhood centres, schools, old peoples homes and hospitals, etc. outlet must be set to 45˚C.
Sectional View
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Brochure
Download the new TV25 Tempering Valve brochure as a PDF* or contact us to have one sent to you.
Download as PDF
*Requires Adobe Acrobat Reader to be installed.
Product Codes
| TV12 |
15mm BSP Hot - 12mm John Guest Cold & Mix |
| TV15 |
15mm Standard Valve (non-return in both inlets) |
| TV15P |
15mm Point Of Use Valve (non-return in both inlets) |
| TV20 |
20mm Standard Valve (non-return in cold inlet only) |
| TV20TP |
20mm Tamper Proof Standard Valve (non-return in cold inlet only) |
| TV20D |
20mm Ring Main Installation (non-return on both inlets) |
| TV20S |
20mm Solar Tempering Valve |
| TV25 |
25mm Standard Valve (non-return in both inlets) |
| TV25S |
25mm Solar Tempering Valve |
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