Dosing Pots
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INTRODUCTION
Dosing pots are required in order to feed liquid
chemicals such as corrosion inhibitors into closed
systems.
The dosing pots consist of a mild steel vessel with
inlet (return) and outlet (flow) valves, a drain valve
and a filling valve. A steel tundish, air release valve,
wall mounting brackets and a non-return valve.
Dosing pots can also be supplied without the
valves, and air release valve if requested.
Installation:
It is important that the dosing pots are fitted correctly in to the
system to allow rapid chemical feed. This is best achieved by
connecting across the main flow and return pipework. Ideally the
flow connection should be made on to the bottom of the dosing
pot, and the return the top.
The dosing pot is designed for the conditions stated on the name
plate, the system into which the dosing pot is installed should have
adequate protection to ensure the dosing pot is operated within
these limits at all times
We are now manufacturing all our chemical dosing pots so they
can be installed either left or right handed for ease of installation
purposes. Floor stands are also available upon request.
Operation:
1) Isolate pot: close all valves
2) Drain pot: open valves A and D
3) Charge pot: close valve D and introduce solution via valve A
(tundish)
4) Expel air :open air vent until solution appears
5) Inject treatment: close valve A fully and open valves B and C
6) The dosing pot may reach temperatures up to 120 degrees
centigrade. Protection or warnings should be applied to
ensure that personnel do not come into contact with the pot
so as to avoid burns
7) A check valve is to be installed to prevent accidental scolding
and chemical saturation (blow back) of personnel operating
the dosing pot
Maintenance:
After long-term use the valves may require replacement. Periodic
inspection should be conducted on the dosing pot in particular
checking for corrosion wear. l mm corrosion allowance is provided
for in the design. If corrosion is found to be greater than 1 mm the
dosing pot should be taken out of use.
Specification:
Mild steel shell to BS 1387 (up to 150mm, schedule 20 used
on 200mm and above)
Welded to BS EN 287
All dosing pots that are designed to PD 5500:2000 category
3 (C E marked) have the following Maximum Working
pressures:
# 14 bar-3.5 litres to 6 litres inclusive
# 10 bar- 10 litre to 20 litres inclusive
# 8 bar-25 litres
Dosing pots that are not designed to the above are available
which have max. working pressure of 14 bar throughout the
range (3.5 litre to 25 litre).
Powder coated paint finish.
- Dosing Pots
- Size (litres)
- 3.5 Litre
- 5 Litre
- 6 Litre
- 10 Litre
- 11 Litre
- 13.5 Litre
- 15 Litre
- 16 Litre
- 18 Litre
- 20 Litre
- 25 Litre
Water Sample Coolers
INTRODUCTION
If there is a requirement to sample hot or boiling
waters, the installation of sample coolers is
essential for the following reasons.
Safety:
To ensure compliance with health and safety regulations. The
health and safety act 1974 requires employers to provide a safe
method of sampling water in boiler plants.
Accuracy:
A significant portion of any heated water sample will be lost to
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.
Two versions are available, one with a copper coil for general use,
and one with a stainless coil to comply with any fluids that are
incompatible with copper. Also there are fixed or removable coils
available
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 Oc i.e. steam boilers, steam and
condensate mains. Closed heating circuits, and water systems.
Installation:
The sample cooler should be installed as close as possible to the
system take of point at a height to facilitate convenient operation;
the unit must be mounted vertical.
An isolating valve capable of withstanding the full system pressure
should be installed immediately to the take of point.
The cooling water should be taken to a suitable drain through a
tundish
Operation:
1. Open the cold-water inlet valve (a) fully and ensure cooling
water is flowing to drain.
2. Open the sample regulating valve (b) 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.
3. Regulate the sample flow until a stable temperature of 15 oc.
then collect sufficient volume of water in a suitable container
4. When sample has been acquired close the regulating
valve then the cold-water inlet valve.
Maintenance:
Should cooling deteriorate the coil can be removed for inspection
by splitting the flange assembly.
Specification:
Mild steel outer shell to BS 1387
Welded to BS EN 287
Fixed or removable coil
10mm Copper coil table y 0.8mm wall thickness. Suitable to
pressures up to an including 16 bar C 202 oc
10mm Stainless coil type 316 1.OOmm wall thickness,
annealed condition. Suitable for pressures up to and
including 139 bar C 336 Oc.
Max. Working pressure for the shell 14 bar
Coolant inlet and outlet 1/Z" b.s.p.
Corrosion resistant paint internally and externally applied.
Sample flow controlled by a 3/8" valve. Cooling water by a
1i2" valve
Flange assembly on 16 rating
End plates- thickness 6mm
Microbubble Air & Dirt Seperators
Microbubble air and dirt separators produced in Britain and tested in a British University Engineering laboratory have recently become part of the Supaflex portfolio of specialist pipeline equipment along with Expansion Bellows. The removal of dissolved gasses and dirt particles from both chilled water and heating systems is a very important aspect in maintaining equipment in serviceable condition. Old systems in particular, where new boilers and pumps may have been added, can be particularly vulnerable to damage from air and dirt. The features of the units include: low pressure drop, bi-directional flow and working pressure temperature of standard units to 10 bar/ 1 l Oc. Standard flanged ends are BS4504 PN16 in all sizes from 5Omm to 450mm bore. Other flange tables can be supplied. Supaflex Dosing Pots and water sample coolers can also be supplied in a range of standard sizes to 25 litres.
- Microbubble Air & Dirt Separators
- Model
- CVAD-50mm
- CVAD-65mm
- CVAD-80mm
- CVAD-100mm
- CVAD-125mm
- CVAD-150mm
- CVAD-200mm
- CVAD-250mm
- CVAD-300mm
- CVAD-350mm
- CVAD-400mm
- CVAD-450mm
Click here for more CLEANVENT (model CVAD) information
MagVent
- MAGVENT (Permanent Magnet Model)
- Model
- MAGCVAD-50mm
- MAGCVAD-65mm
- MAGCVAD-80mm
- MAGCVAD-100mm
- MAGCVAD-125mm
- MAGCVAD-150mm
- MAGCVAD-200mm
- MAGCVAD-250mm
- MAGCVAD-300mm
- MAGCVAD-350mm
- MAGCVAD-400mm
- MAGCVAD-450mm
Click here for more MAGVENT (model MAGCVAD) information
As an aid to system cleaning you should specifically install Magnetic Filtering. The magnetite MagVent range has been developed to remove potentially damaging particles from both hot and chilled water systems. I t is comprised of a very fine stainless-steel strainer capable of removing air & microbubbles plus debris down to 10 micron. Inside the bod of ou unit is also a high-gauss magnetic rod these two elements combined provide a very powerful cleaning device. As the water flows through the unit the magnetite is attracted to the magnetic rod ad even the smallest particles down to 5 micron and less are collected. Through simple & cost effective maintenance the magnetic rod is then removed 100%. For the complete and efficient removal of air & dirt from water systems Supaflex offers a comprehensive range of air & dirt separation equipment.
It is perhaps human nature to blame the component that exhibits the symptoms and look any further.
Running a clean and well maintained water condition in heating & cooling systems is not expensive and ensures reliable operation from pumps, valves ad heat emitters etc, as well as the boiler and chillers.
Please enquire about our MagVent range of air & dirt separators. A clean and efficient way for longer lasting less problematic systems.
- Removable/Demountable Unit
- Model
- CVAD-R-50mm
- CVAD-R-65mm
- CVAD-R-80mm
- CVAD-R-100mm
- CVAD-R-125mm
- CVAD-R-150mm
- CVAD-R-200mm
- CVAD-R-250mm
- CVAD-R-300mm
- CVAD-R-350mm
- CVAD-R-400mm
- CVAD-R-450mm
Click here for more CLEANVENT (model CVAD-R) information
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