toilet anti syphon valves

[samwise]

The trouble with fitting a siphon break in the Lavac pipework is that it is another couple of joints and another potential air leak, which can reduce the efficiency of the system. In my experience, the black Lavac plug is too big and you do not get enough water in the bowl. Incidentally, I found that replacement Lavac plugs are hard to find. Eventually Mailspeed turned up trumps.

 

[pvb]

Incidentally, I found that replacement Lavac plugs are hard to find.

Really? See here.

 

[Dipper]

My Jabsco does not have a syphon break in the loops on either of the lines, but I insist that the seacocks are closed once the paperwork's done and business transacted. This is despite the fact that I have sailed her hard with them open to see if it syphons - and it didn't. I don't like the idea of a fine spray of effluent as hair tonic (although it might just work!?).

Incidentally, whilst trying to cause a syphon, I discovered that on port tack the water tank is higher than the sink and empties into it

Same here!

 

[mitiempo]

A proper anti siphon does not spray anything and doesn't smell. Normally they let air in and nothing out. When clogged they don't let anything in or out and shoulkd be checked regularly - a 2 minute job. They should be on both inlet and outlet of a Jabsco type head. The Lavac as described is unique.