The document describes a solar tempering valve product that is designed for high flow solar water heating systems. The valve mixes hot and cold water to deliver tempered water at a constant temperature. Key features include withstanding extreme temperatures, high flow design, union connections for easy installation and servicing, strainers to protect internal components, and tamper-proof adjustment. The product range includes models suitable for high flow applications and domestic installations.

1. Product Specification Sheet
• High endurance - will endure the extreme temperatures present in solar
installations.
• High flow design - designed especially for use on high flow, large capacity
systems with reduced head loss.
• Union connections, easy to install and remove for servicing of
strainers
• Strainers upstream of checks - protect valve and check valves from
impurities in the water supply
• Tamper-proof adjustment - special adjuster key eliminates chances of
accidental adjustment.
• Individually tested and calibrated to ensure higher quality and performance.
The market leading Solar Tempering Valve for high flow rates. In solar hot water
distribution systems.
Product Features and Benefits
HEAT110-002-07/08
Solar Tempering Valves

2. Description
Solar highflow and universal tempering valves, mix hot water
with cold water to deliver a tempered water at a constant
temperature throughout an entire house, building or system.
These valves have been specifically engineered to withstand the
extreme thermal demands of solar heating applications.
The Solar Highflow is suitable for high flow, large
capacity applications and for low pressure environments.
The Highflow is suited for low pressure, high flow
environments such as gravity fed and tank supplied solar
water heater installations.
The Solar Universal, is suitable for domestic applications. It
is ideal for use in installations where there are fluctuations
in supply conditions and in solar hot water installations
where a booster pump is used.
Product Range
Solar Tempering Valves -
HEAT 115 090 22mm compression Solar Highflow
HEAT 110 092 15/22mm compression Solar Universal
Performance
Materials
Body: Cast gunmetal, nickel plated
Internal components: DZR brass
Seals: Nitrile elastomer
Spring: Stainless steel
Piston: Polysulfone polymer
Fittings: DZR brass
Strainers: Stainless steel
How to Specify
Tempering valve suitable for installations where there
are extreme thermal demands in particular solar heating
applications. Complete with integral line strainers and check
valves. (Select appropriate range code)
Dimensions
HEAT 110 092
HEAT 115 090
All dimensions shown in mm unless otherwise stated
A B C D E F G H
HEAT 110
092
142 47 53 77 162 40 1"
BSP
15/22mm
Univ.
HEAT 115 090 183 65 58 82 184 57 1"BSP 22mm
Comp.
Specifications
Adjustable temperature range: 30-65°C
Optimum outlet temperature range: 40 - 50°C
Must be commissioned
on site to achieve
desired outlet temperature
Temperature, hot supply: 60 - 99°C
Temperature, cold supply: 5 - 30°C
Minimum temperature differential: 10°C min.
Temperature stability (nominal): ±3°C
Static pressure: 16 bar max.
Operating pressure: 0.2 to 5.0 bar
Max. pressure loss ratio: 10:1 (either supply)
Minimum flow rate: 4 litres/min
Guarantee
All Reliance products undergo strict performance tests prior
to despatch, and are guaranteed against faulty materials and
workmanship for one year from date of purchase. This is in
addition to any statutory right.
HEAT110-002-07/08 RWC reserves the right to make changes to the product which may affect the accuracy of information contained in this leaflet © Reliance Water Controls, July 2008
Reliance Water Controls
Worcester Road, Evesham, Worcestershire, WR11 4RA, UK
Tel: +44 (0)1386 712 400 Fax: +44 (0)1386 712 401 www.rwc.co.uk
Contacts: Sales Enquiries Technical Support
Telephone: +44 (0)1386 712400 +44 (0)1386 712 400
Fax: +44 (0)1386 712 401 +44 (0)1386 712 418
E-Mail: sales@rwc.co.uk technical@rwc.co.uk
25 50 75 100 125 150 1750
0.5
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15mm Valve
22mm Valve
FLOW (LPM)
PRESSURELOSS(BAR)
Solar Tempering Valves
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