I am about to connect the pipework to a new thermostatically controlled 3 way mixer - with 2 showers and 1 bath filler.
The inlets for the hot and cold are both 15mm as is all the pipework in the flat - the flow rate is 18L/min for cold (mains fed) and 9L/min for the hot from the combi boiler (which is 5 feet away).
My question is what diameter pipework should I be fitting to the bath filler?
The outlet from the mixer is 1/2 female so I am assuming it should be 15mm but is this enough for a bath? The distance from the mixer to the filler is about 1.3m of pipwork (wall mounted mixer and combined overflow and spout halfway down the side of the bath).
I was going to fit 15mm polypipe and pushfits but would like some advice from those in the know.
I will be fitting DCVs and service valves on the hot and cold feed into the mixer, which will restrict the flow so is 15mm acceptable or should I be looking to increase pipe diamter where possible - i.e. 22mm DCVs and a 22mm connecting pipe from mixer to filler (even though both ends are geared towards 15mm as they have 1/2" threads which again will rectrict flow)?
Any constructive advice welcome.
The inlets for the hot and cold are both 15mm as is all the pipework in the flat - the flow rate is 18L/min for cold (mains fed) and 9L/min for the hot from the combi boiler (which is 5 feet away).
My question is what diameter pipework should I be fitting to the bath filler?
The outlet from the mixer is 1/2 female so I am assuming it should be 15mm but is this enough for a bath? The distance from the mixer to the filler is about 1.3m of pipwork (wall mounted mixer and combined overflow and spout halfway down the side of the bath).
I was going to fit 15mm polypipe and pushfits but would like some advice from those in the know.
I will be fitting DCVs and service valves on the hot and cold feed into the mixer, which will restrict the flow so is 15mm acceptable or should I be looking to increase pipe diamter where possible - i.e. 22mm DCVs and a 22mm connecting pipe from mixer to filler (even though both ends are geared towards 15mm as they have 1/2" threads which again will rectrict flow)?
Any constructive advice welcome.