Hello
The instructions on my pump say "Do not install a non-return valve or devices which contain non-return valves in the suction (inlet) pipework to the pump. The pump must be free to vent to the supply tanks at all times".
My pump is fitted between the shower mixer and the shower head but I do have a non-return valve fitted on the hot feed to the shower mixer - does this still count as being in the inlet pipework? If so could this be the reason why my pump sometimes fails to cut in? If I remove the non-return valve then my overflow pipe starts spurting out water continuously. Is this anything to do with the pressures being different for the hot and cold feed to the shower?
Any help anyone could offer would be greatly appreciated.
This topic gives more detail.
//www.diynot.com/forums/viewtopic.php?p=768665#768665
Thanks
Phil
The instructions on my pump say "Do not install a non-return valve or devices which contain non-return valves in the suction (inlet) pipework to the pump. The pump must be free to vent to the supply tanks at all times".
My pump is fitted between the shower mixer and the shower head but I do have a non-return valve fitted on the hot feed to the shower mixer - does this still count as being in the inlet pipework? If so could this be the reason why my pump sometimes fails to cut in? If I remove the non-return valve then my overflow pipe starts spurting out water continuously. Is this anything to do with the pressures being different for the hot and cold feed to the shower?
Any help anyone could offer would be greatly appreciated.
This topic gives more detail.
//www.diynot.com/forums/viewtopic.php?p=768665#768665
Thanks
Phil