Introduction
Conditions for normal use
Specification
The NHS is aware that users of hot water in care establishments can be at risk
from scalding and in order to minimise that risk and reduce the incidence of
legionella thermostatic mixing valves are generally used. To ensure the
performance of these products the NHS Estates Model Engineering Specification
DO8 was written. This product is independently certified to comply with that
specification for use as a hand-washing device on both high and low pressure.
This fitting is designed to have the following advantages: -
1) The temperatures of the exposed surfaces in normal use will not cause
skin damage.
2) Integral in front of panel isolation and union connections allow the
complete unit to be removed for workshop servicing.
3) Integral flushing system allows the mixed water chambers to be
pasteurised reducing the risk of bio film growth.
It can be used in any situation where a thermostatically controlled temperature is
required for hand washing or vessel filling.
This product is approved by Buildcert for the following designations:
In order ensure the product will perform within the requirements of the TMV3
scheme the operating parameters should comply with the table below, it may
perform adequately outside these limits but an engineer should carry out a risk
assessment to substantiate this.
The flow rates (L/min) for the tap with and without flow limiters are quoted in
the table below:
NOTES
Code
Operati
ng Pressure
Application
HP - W
High Pressure
Wash Basin
LP - WE
Low pressure Economy
Wash Basin
Pressure Drop bar
0.1
0.2
0.4
0.6
0.8
1
1.5
2
3
4
5
Flow rate without limiters
4
5.8
8
10
11.6
12.9
Flow rate with limiters
8.5
9
9.3
9
9
9
No Flow Regulators
W ith Flow Regulators
ORDER CODE
DESCRIPTION
SKH64-1
O-RING SEALS KIT
SKH64-2
CARTRIDGE ASSEMBLY
SKH64-3
FLOW STRAIGHTNER
SKH64-4
HANDLE ASSEMBLY.
SKH64-5
INLET ASSEMBLIES (PAIR)
SKH64-6
COLD ELBOW ASSEMBLY (WALL MOUNT)
SKH64-7
HOT ELBOW ASSEMBLY (WALL MOUNT)
SKH64-8
COLD ELBOW ASSEMBLY (DECK MOUNT)
SKH64-9
HOT ELBOW ASSEMBLY (DECK MOUNT)
SKH64-10
WALL SHROUDS CHROME (PAIR)
SK1500-3
THERMOSTAT & PISTON ASSEMBLY
SK320078
PISTON ASSEMBLY
SK740012
THERMOSTAT
HTM64 SPARES LISTING
Low
pressure
High
pressure
Maximum Static Pressure
10 bar
10 bar
Minimum Dynamic Pressure
0.2 to 1 bar
1 to 5 bar
Recommended hot supply temperature
52 to 65ºC
52 to 65ºC
Recommended cold supply temperature
5 to 20ºC
5 to 20ºC
Minimal Temperature Differential between Mixed Water
Temperature and Either Supply
10ºC
10ºC
