Ceramic Syphon. Replace with plastic one?

[WaterTight]

First one I've seen. 50's/60's ceramic syphon on ideal standard toilet with very large cistern.

There's room for a normal plastic syphon but will it work as well and will it have a normal 1½" outlet?

I know I could make a new diaphragm but I'd like a plan B.

 

[dontknowitall]

I'd go for the diaphram.

If this doesn't work then I'd take the part down to the merchants and be ready for many large intakes of breath and scratching of chins and heads ...

 

[plumbandplumber]

Not as rare as you'd think in certain parts. Whip it out and put in a new diaphragm. These things were built to last, and designed to be repaired. Will still be going for years to come.

 

[WaterTight]

B-b-b-ut........do you think a standard plastic syphon would fit/work? I demand a plan B when plan A features an unfamiliar object!

 

[WaterTight]

Replacing a Ceramic WC Syphon - DIYnot.com - DIY and Home Improvement

Ahh...apparently not.

 

[dontknowitall]

These people for plan B ... or C?

Lunns

 

[ecowarm]

Thanks for that link Mr Dontknowitall you will have to change your name to knowitall soon!

 

[WaterTight]

Alas even Lunns don't stock these relics.

 

[danielp]

to replace you will have to use a special type of dudley syphon and have a separate air admittance valve that pushes inside it. you will know if the pan has a double syphon trap

 

[stevetheplumber]

i think these wre bolted to the bottom of the cysten

 

[WaterTight]

From the sounds of it there's a very good chance the only thing would be to try and make a replacement diaphragm.

 

[WHPES]

I have replaced one once with a push button valve with 2" bottom as the hole was larger than most plastic syphons (1.5")

The buttons fit where the handle normally goes.