Navitron Renewable Energy and Sustainability Forum

SOLAR THERMAL => Solar Thermal Systems => Topic started by: rosbif on May 09, 2019, 02:35:48 PM

Title: Solar Check Valve Rattle
Post by: rosbif on May 09, 2019, 02:35:48 PM

I fitted a solar thermal system a few weeks ago and it seems to be working well.
It has a Barberi Trolli solar pump with an integrated check valve above the return shut off valve above the pump.
I have just realised that I had not turned the check valve to the closed working position, but when I turn this 180 degrees to the closed position as the instructions, a rattle immediately occurs - light at pump setting 1, loud and grinding at setting 3.

Any advice most welcome!