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My toilet cistern has in it a Macdee Metro 3-part syphon, 8.5" tall 'bell housing'.
it's very similar in appearance to this one:
but not quite .......... bear with me. Note that mine is about 20 years old.
For a start, mine doesn't have the vertical blue piece on the side which I believe allows the water flush volume to be adjusted.
Also, there's a Syphon measuring guide here:
www.bathroomspareparts.co.uk
(click on the small image below the image of the grey siphon, then click on it again to enlarge)
Going by those measurements, the 'bell housing' of my syphon is 8.5 inches tall. However, mine doesn't read the base of the cistern, never has done.
Should it? Looking at photos of an assembled unit many do but, as mentioned, mine never has.
So should I replace the bell housing with another Macdee unit (as pictured) that's 8.5" tall, or go for a 9 inch so it'll reach the bottom of the cistern?
I only want to replace the bell housing and, due to that design, it's easy to replace only that without removing the main vertical tube.
Also, and just out of interest, about a grey syphon bell housing like this:
www.plumbingworld.co.uk
will it fit onto the white plastic vertical tube as pictured at the start of this message? It's just that I can't currently find a bell housing in the white an blue. Not sure why there is a grey one and a white one, are they incompatible in terms of fitting together?
Edit: from doing some more research new Macdee Metro syphons are of a screw thread type to connect the bell housing to the main vertical pipe, however mine is a 'twist lock' type (the blue ring that is turned).
it's very similar in appearance to this one:
Macdee 3 Part 8" Oval Oblong Syphon For Toilet Cistern Flush 5017134105216 | eBay
Can fit macdee syphons. 8" siphon / C-Link 2.25".
www.ebay.co.uk
but not quite .......... bear with me. Note that mine is about 20 years old.
For a start, mine doesn't have the vertical blue piece on the side which I believe allows the water flush volume to be adjusted.
Also, there's a Syphon measuring guide here:
Wirquin Macdee Rapid Oblong Shape 10.5" Siphon C-Link DSY9238
Wirquin Macdee Rapid Oblong Shape 10.5" Siphon C-Link DSY9238 The connection thread size is 1.1/2" BSP - Ideal for use
(click on the small image below the image of the grey siphon, then click on it again to enlarge)
Going by those measurements, the 'bell housing' of my syphon is 8.5 inches tall. However, mine doesn't read the base of the cistern, never has done.
Should it? Looking at photos of an assembled unit many do but, as mentioned, mine never has.
So should I replace the bell housing with another Macdee unit (as pictured) that's 8.5" tall, or go for a 9 inch so it'll reach the bottom of the cistern?
I only want to replace the bell housing and, due to that design, it's easy to replace only that without removing the main vertical tube.
Also, and just out of interest, about a grey syphon bell housing like this:
Derwent Macdee Oblong 3 Piece Syphon - 8.5 Inch High
Derwent Macdee Oblong 3 Piece Syphon - 8.5 Inch High
www.plumbingworld.co.uk
will it fit onto the white plastic vertical tube as pictured at the start of this message? It's just that I can't currently find a bell housing in the white an blue. Not sure why there is a grey one and a white one, are they incompatible in terms of fitting together?
Edit: from doing some more research new Macdee Metro syphons are of a screw thread type to connect the bell housing to the main vertical pipe, however mine is a 'twist lock' type (the blue ring that is turned).
Last edited:
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