Product category:
Building management systems
News Release from: Faversham House Exhibitions | Subject: Catchpots
Edited by the Processingtalk Editorial
Team on 24 April 2007
Two water and energy saving products at
IWEX 2007
The IWEX organisers advise that Henson Delayed Valves will launch Catchpots at IWEX2007, these devices work in conjunction with water valves and cisterns to save water and energy
Henson Delayed Valves, (HDV) a Company based in Norfolk UK, have developed a range of unique energy and water saving products, called Catchpots: they work in conjunction with water valves and cisterns HDV will be exhibiting two working demonstration units on Stand R63 at the IWEX 2007 show at the NEC in Birmingham on May 1st
This article was originally published on Processingtalk on 21 Feb 2005 at 8.00am (UK)
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The products have been developed for domestic and industrial applications: the first is to improve the performance of standard float valves saving vast amounts of energy (typically 70%) and the second will savesome of the water which is normally wasted in cisterns (approx 500ml) with every flush.
All Catchpots can be supplied with valves or supplied separately for retrofit.
The first product being exhibited has been designed to make standard float valves operate at full bore and prevent them from being partially open and dribble-filling storage tanks.
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Dribble fill is the main cause of various undesirable problems ie partially open valves make pumps work against high back pressure resulting in large amounts of energy being wasted.
Also dribble-fill can cause water hammer and (due to excessive cycling) pump burnout.
The use of Catchpots can help solve other problems such as stagnation, hotspots and bacterial growth, the working demonstration illustrates this.
The Catchpot and float valve which is sited on the valve lever controls the opening and closing of the valve.
When the level of water in a storage tank drops, a valve fitted with a Catchpot will not open until the water has dropped to a pre-determined amount.
When the tank starts to fill, the Catchpot retains the first flow of water and prevents it from entering the tank, this retained water is used to weigh down the lever and float, hence smoothly opening the valve to full bore.
When the tank is almost full the Catchpot quickly discharges all the retained water via bleed holes and siphons which in turn closes the valve smoothly and tightly.
The second product being exhibited fits into a WC cistern and has been designed to save the water that is wasted during the WC flushing cycle.
The problem with existing WC cisterns (usually with a 6 Litre flush) is that more than 6 Litres is flushed.
This is due to incoming water during the flushing cycle adding to the 6 Litre flushing water.
HDV have designed various Catchpots to eliminate this wasted water.
The flushing of a WC usually takes between 3-5 seconds, during this time the valve opens and discharges water (approx 500 ml) which adds to the volume of water going down the pan, this water is wasted.
The Catchpot is designed to catch all of the wasted water and prevent it from discharging down the pan.
When the cistern is almost fully replenished the Catchpot automatically discharges the retained water and uses it to top up the cistern to the correct level.
With this emphasis on energy and water saving, HDV has invested considerable time and money designing and patenting Catchpots for a variety of functions which they believe will undoubtedly play a major role in future water management and energy saving.
The technology can be used for many applications including rainwater harvesting, water softeners, dosing systems and any application where low cost and maintenance free control of water is necessary.
Company representatives will be on hand at the IXEX show to discuss valve and cistern manufacturers Catchpot requirements.
Descriptive literature will be available at the show.
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