Are water tank overflow pipes always needed?
Diverting additional downpipes often causes the inflow capacity to exceed a water tank’s overflow capacity during heavy rain.
tank overflow outlets or pipes are required to be fitted with either
mosquito proof mesh or a flap valve. The mesh typically has an open
area of about 55% which presents a flow restriction within the
water tanks are designed with very high overflow outlets which
severely reduce a tank’s mitigation and discharge capacity.
tank manufacturers rarely if ever provide information about a tank’s
organic film floats on the tank’s water surface during and after
rain. This often gels to the overflow mesh during overflows, causing
an increased flow restriction.
pipes are often costly to install.
diverted along walls are ugly.
BUT height adjusting SUPADIVERTAs to downpipes can eliminate the need for a water tank overflow pipe!
SUPADIVERTA height adjusted on a downpipe with the top of the
reservoir wall 2 cm below the bottom of the tank’s overflow outlet
will overflow back to the stormwater system when the tank fills.
no other downpipes drain to the water tank’s top meshed inlet,
there is no need for a water tank overflow pipe!
or capping a water tank’s overflow outlet increases storage
capacity. It also allows the Supadiverta to be fitted higher on the
downpipe to generate increased head pressure.
a tank already has an overflow pipe connected and a downpipe diverts
to the tanks top meshed inlet, additional downpipes can be diverted
to the tank by Supadivertas without affecting the tank’s overflow
Supadivertas which divert rainwater to stormwater when the tank is
full reduces sediment build up.
brick mortar lines or weatherboards can be used as a ‘line of
sight’ when fitting a Supadiverta.
to slope, locating a tank away from the house is no longer difficult
diverts water, not downpipes.
and cheaper rainwater harvesting.
Any number of downpipes can be harvested by this method