Two part toilet syphon ?

[BazzaS]

How much easier it would be if a toilet syphon came in two parts. One part the tube to the toilet, another part the syphon mechanism/unit itself.
If this were the case then replacing a defective syphon unit would merely be unclipping the old syphon unit from the tube and clipping on a new syphon unit and not require the faff, especially in respect to a close coupled system, of having to dismantle the whole shebang.
So, does anyone know of a 2-part syphon ? or why such a thing is not made ?
Best Regards

 

[pcaouolte]

Like this?
https://www.screwfix.com/p/thomas-dudley-ltd-turbo-88-duo-flush-9-siphon-205mm/8461f

 

[just pumps]

There are plenty of two part valves out there, Dudley being one.

 

[JohnD]

How much easier it would be if a toilet syphon came in two parts. One part the tube to the toilet, another part the syphon mechanism/unit itself.
If this were the case then replacing a defective syphon unit would merely be unclipping the old syphon unit from the tube and clipping on a new syphon unit and not require the faff, especially in respect to a close coupled system, of having to dismantle the whole shebang.
So, does anyone know of a 2-part syphon ? or why such a thing is not made ?
Best Regards

Syphon?

How old fashioned

Nothing beats a Flapper for simplicity and strength of flush.