How can I determine the pressure and flow I will get from a Triton mixer shower connected to gravity supplies?
The principle is that for every 1 metre head of water, (as measured from the base of the cold water cistern to the top of the showerhead) there will be a pressure into the mixer of 0.1 bar. This is a theoretical pressure as restrictions within pipe fittings and the shower mixer valve will reduce the pressure to a degree. Providing only minimal restrictions are present in the supplies and terminal fitting the additional measurement (height) of water within the cistern will usually compensate for pressure losses in the supplies. Where flow-rate is quoted for mixer valves at 0.1 bar this is an open outlet figure i.e. flow of water from the mixer outlet without the shower hose and showerhead fitted.
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