I recently did the unthinkable and got my hands (well, inch thick rubber gloves) very, very dirty unblocking my saniplus unit. All went fine with removing the blockage, however on opening the unit up I did notice that the water seal from the lid was not where it should be and was sort of folded in half in amongst the rest of the gunk in the chamber.
It was un-damaged so with the blockage removed I popped the seal back on around the lid in it's rightful place. We now get a bit of a weird sort of tapping noise after the unit has cycled, and I have read up on the saniflo docs which suggest it may be syphoning at the water seal if there is a significant drop on the outlet pipework - which would make sense as it runs at about 45 degrees down the outside wall to meet the main soil pipe. I guess this would also explain the seal previously being 'sucked in' to the unit?
So (finally!) my question - the saniflo document says that a 10psi air admittance valve can be added at the top of the pipe run to prevent the syphon effect - but the outlet piperun from the unit is a rubber hose jubilee clipped onto 22mm copper pipe... the smallest valve I can find rated at 10psi is 32mm on plastic - how on earth can I incorporate this into the current setup? To go from 22mm to 32mm, from copper to plastic, under such pressure.... I've had a few ideas in my mind of how I might achieve it but all of them have ended with a mental image of me covered in you-know-what! Any advice?
Cheers,
Steve
It was un-damaged so with the blockage removed I popped the seal back on around the lid in it's rightful place. We now get a bit of a weird sort of tapping noise after the unit has cycled, and I have read up on the saniflo docs which suggest it may be syphoning at the water seal if there is a significant drop on the outlet pipework - which would make sense as it runs at about 45 degrees down the outside wall to meet the main soil pipe. I guess this would also explain the seal previously being 'sucked in' to the unit?
So (finally!) my question - the saniflo document says that a 10psi air admittance valve can be added at the top of the pipe run to prevent the syphon effect - but the outlet piperun from the unit is a rubber hose jubilee clipped onto 22mm copper pipe... the smallest valve I can find rated at 10psi is 32mm on plastic - how on earth can I incorporate this into the current setup? To go from 22mm to 32mm, from copper to plastic, under such pressure.... I've had a few ideas in my mind of how I might achieve it but all of them have ended with a mental image of me covered in you-know-what! Any advice?
Cheers,
Steve