Browse Forums Eco Living Re: First flush diverter 2Nov 12, 2009 9:16 pm Important - it stops a lot of sludge / dirt and organic matter collecting in your tank and rotting there which eventually clogs the taps etc. Better to not let it in - and it's a pretty simple task to stop most of it anyway. So why not? Re: First flush diverter 3Aug 13, 2010 12:07 pm They really arent that important unless you have a LOT of trees close by dropping leaves. Your tank cant get full of debris as you have a 5 micron mosquito screen on the inlet of your tank which will catch 99% of debris. As for dust getting into your tank and forming sludge, yes this will happen, but if you have a look at where your outlet tap is, its situated 50-75mm from the floor of the tank. This area will allow the dust to settle so it never has to pass through your pump even though most decent pumps on the market these days will chew up larger mircon particles. Re: First flush diverter 4Mar 08, 2013 4:00 pm Just came across this old thread and I am going to respond to it because of some of the opinions given and the fact that the subject matter is still current. bradtez Your tank cant get full of debris as you have a 5 micron mosquito screen on the inlet of your tank which will catch 99% of debris. The tank inlet is required to have a mosquito proof screen with apertures less than 1mm (1,000 microns). If the tank screens were 5 micron as posted, they would block very quickly. bradtez As for dust getting into your tank and forming sludge, yes this will happen, but if you have a look at where your outlet tap is, its situated 50-75mm from the floor of the tank. This area will allow the dust to settle so it never has to pass through your pump even though most decent pumps on the market these days will chew up larger mircon particles. Most tank outlets that connect to the pump are indeed as low as 50 mm above the bottom and this is bad for the pump and appliances. The tank's pump draw outlet is usually 25mm and DN 25mm Blue Stripe (HDPE) poly pipe is the pipe of choice for connecting the tank to the pump. Blue Stripe poly pipe is metric, that is, it is measured as an outside diameter and the usual pressure rated PN12.5 used has an inside diameter of approximately 21mm. This gives an internal volume of approximately .35 litres per metre which means that approximately 2.9 metres of pipe holds 1 litre of water. If the pump was drawing water at a rate of 20 litres per minute, the flow rate through the tank draw outlet would be nearly 1 metre per second. This suction rate will vacuum sludge into a low fitted outlet. This not only results in dirty water in toilet cisterns and clogged washing machine filters, it can also damage the pump by a process known as erosion corrosion. Sediment ingestation is a known cause of early pump failure. The tank's pump draw outlet should never be fitted less than 80mm above the bottom of the tank at the outlet's lowest point. A good leaf diverter gives a far greater benefit than a first flush diverter. If the water is for potable use, then a good adequately sized first flush diverter that can be manually emptied to prevent yield loss should also fitted. If practicable, the captured flush should be used on the garden and not diverted to waste. 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. The unit normally clips into a metal plate screwed to the wall, either plate is not flush, or unit not hooked in and could be hanging from the pipes partly, either might… 2 15800 Okay, then the choice is really about the build quality of the door itself which means the brand name. Sorry I can't recommend one or the other so best to rely on comments… 5 3279 Hi there, looking to have a gym in a new build. Planning to install some sort of rubber mat flooring (on concrete) i.e. Asking the builder to not do floorboards in the gym… 0 1366 |