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THERMOSTATIC MIXING VALVES
D1088 & D1089
INTRODUCTION
Thermostatic Mixing Valves (TMV) are self-acting
and designed to blend hot and cold water, to ensure
a constant, safe outlet temperature and prevent
scalding.
•
Design and manufactured to comply with BS
EN1287 (Low Pressure) and BS EN1111 (High
Pressure).
•
Have been independently tested and certified as
meeting the requirements of the D08 specification
under the NSF TMV3 scheme.
•
The D1089 includes right angle isolation valves.
•
Both the D1088 & D1089 thermostatic mixing
valves are certified under the NSF TMV2 & TMV3
schemes and are WRAS approved products listed
in the WRAS Approvals Directory.
•
WRAS and NSF approval certificates can be
accessed via the Crane FS website download
portal or alternatively, please contact our
Technical Helpline.
TECHNICAL SPECIFICATION
Table 1
Factory Setting
Temperature Setting Range
Cold Water Supply Temp
Hot Water Supply Temp
Minimum Hot to Mix Temperature
Temperature Stability
Maximum Working Pressure
Supply Pressure Imbalance Dynamic
INSTALLATION, OPERATING AND MAINTENANCE INSTRUCTIONS
30°C to 50°C
≤ 25°C (TMV2) / 25°C to 20°C (TMV3)
55°C to 65°C
D1088
D1089
41°C
12°C
±2°C
10 Bar
2:1
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Summary of Contents for Crane D1088
- Page 1 NSF TMV3 scheme. • The D1089 includes right angle isolation valves. • Both the D1088 & D1089 thermostatic mixing valves are certified under the NSF TMV2 & TMV3 schemes and are WRAS approved products listed in the WRAS Approvals Directory.
- Page 2 Water Supply (Water Fittings) Regulations 1999. • The D1088 & D1089 are suitable for single and multiple outlet applications. Care must be taken when using one valve with multiple outlets as flow rates must be achieved under normal operating conditions.
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Page 3: Before Installation
INSTALLATION, OPERATING AND MAINTENANCE INSTRUCTIONS LIMITS OF USE Crane D1088 & D1089 valves have been approved for use on the following designated systems. Table 3 - Valve Designation of Use for TMV2 & TMV3 High Pressure HP Low Pressure LP Application Max. - Page 4 Verify that this temperature does not differ from the temperature taken in a) ii. above by 2°C, (this is a restoration test after a failure of the cold water supply and some deviation of the mixed water outlet temperature may be expected). THERMOSTATIC MIXING VALVES: D1088 & D1089...
- Page 5 The general principle to be observed after the first 2 or 3 in-service tests is that the intervals of future tests should be set to those which previous tests have shown can be achieved with no more than a small change in mixed water temperature. THERMOSTATIC MIXING VALVES: D1088 & D1089...
- Page 6 Locating Ring Sealing Gaskets Headwork Union Nut Thermal assembly Tailpiece Assembly and piston assembly Flow Guide Check Valve Main Spring Water Strainer Tailpiece Olives Compression Nut O-Ring Figure 3 - D1088 pictured, exploded views THERMOSTATIC MIXING VALVES: D1088 & D1089...
- Page 7 The assemblies comprise an integral full bore ball valve and in-line strainer in an angled housing. When this arrangement is used, the requirements for isolation valves and strainers previously mentioned are regarded as fulfilled. THERMOSTATIC MIXING VALVES: D1088 & D1089...
- Page 8 Every effort has been made to ensure that the information contained in FAX: +44 (0)1473 277301 this publication is accurate at the time of publishing. Crane FS assumes EMAIL: enquiries@cranefs.com no responsibility or liability for typographical errors or omissions or for any misinterpretation of the information within the publication and www.cranefs.com...
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