Do I need a non-return(anti-backflow) valve with a vibe-pump
Posted: Sun Apr 19, 2015 2:21 pm
I've just had my Fracinio Heavenly apart as it seemed to get blocked (pump making a noise but doing nothing) and I've traced the problem to a sticking non-return valve on the line from the pump to the solenoid.
The rubber o-ring was sticking and, on removing it to clean, split. Googling to find a replacement lead me to this site which implies that due to the way the vibration pump operates, a non-return valve isn't required: http://coffeetime.wikidot.com/izzo-alex ... turn-valve
The pump is an ULKA EX5 and the machine seems to function fine without the o-ring in the non-return valve - although it's obviously no longer sealing, so I'm wondering if its not better to leave it this way and avoid another cause of maintenance?
Any advice/thoughts appreciated
Cheers
Simon
The rubber o-ring was sticking and, on removing it to clean, split. Googling to find a replacement lead me to this site which implies that due to the way the vibration pump operates, a non-return valve isn't required: http://coffeetime.wikidot.com/izzo-alex ... turn-valve
The pump is an ULKA EX5 and the machine seems to function fine without the o-ring in the non-return valve - although it's obviously no longer sealing, so I'm wondering if its not better to leave it this way and avoid another cause of maintenance?
Any advice/thoughts appreciated
Cheers
Simon