Safety
To ensure compliance with health and
safety regulations. The health and
safety act 1974 r
equires employers to
provide a safe method of sampling water
in boiler plants.
Accuracy
A significant portion of any heated
water sample will be lost into the
atmosphere as steam flashes off which
means that the resultant sample will not
be representative.
Convenience
Opening of drain plugs or loosening of
pipe can be extremely difficult, regardless
of the safety hazard.
Application
Sample coolers should be installed
whenever it is necessary to obtain a
sample of water from a system where
the operating temperature exceeds 60°C
i.e. steam boilers, steam and condensate
mains, closed heating circuits and water
systems.
All Stainless Steel.
Welded to BS EN 287.
Fixed coil.
10 mm dia. stainless steel type 304 1.0 mm
wall thickness coil, annealed condition.
Suitable for pressures up to and
including 139 Bar @ 336°C.
Max. working pressure for the
shell 14 Bar.
Coolant inlet and outlet 1/2” BSP.
Sample flow controlled by a 3/8”
(10 mm) valve. Cooling water by a
1/2” valve.
(No valves are supplied with the
sample coolers).
Specifications
If there is a requirement to sample hot or boiling
waters, the installation of sample coolers is essential.
Fixed Water
Sample Cooler
400
Ø115
BS 8552:2012 Sampling and monitoring of water from building services
closed systems code of practice addresses the particular issues of
sampling water from closed-circuit heating and cooling systems in
buildings and related infrastructure.
The purpose of sampling a closed-circuit water system is to provide
information about the current condition of that system and/or the
water within it.
That might include, but is not limited to-
water treatment status,
water quality,
bacteriological contamination
corrosion activity
Confidence in the results obtained, which are crucially dependent on
consistent sampling and analysis protocols, is extremely important to
industry.
BS Standards Publication BS 8552; 2012 The Building Services Closed
systems code of practice states sampling of the water systems is required:
“Periodically through the life of the system. At least every
three months”
British Standards Publication.
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WATER SAMPLE COOLERS
The sample cooler should be installed as close as possible to the system take-off point at a height to
facilitate convenient operation. The unit must be mounted vertically.
An isolating valve capable of withstanding the full system pressure should be installed immediately
by the take-off point.
The cooling water should be taken to a suitable drain through a tundish.
Open the cold-water inlet valve fully and ensure cooling water is flowing to drain.
Open the sample-regulating valve slowly until system water starts to flow, then allow
sample to run to waste for a suitable period to purge the stagnant water in the
sample line.
Regulate the sample flow until a stable temperature of 15 ºC is reached, then collect
sufficient volume of water in a suitable container.
When sample has been acquired, close the regulating valve, then the cold-water inlet valve.
Interflex Hose & Bellows Ltd. • www.interflex.co.uk
Ludlow Eco Park • Ludlow • Shropshire • SY8 1FF • United Kingdom
Tel: +44 (0)1584 878500 • Email: supaflex@interflex.co.uk
WATER SAMPLE COOLERS
