Any plumbers around? DIY advice on tap fitting

rossyl

Member
Messages
2,498
Hi guys,

Long story relatively short, my wife bought a tap that was meant to have three inputs - Hot, Cold softened, Cold hard.

Instead, the tap has a filter input that it takes off the cold feed.
Off the cold feed it goes into a filter
The output off the filter is a thin, in diameter, flexible plastic pipe.

The connection for the thin flexible pipe to the tap is a bit odd.
  • there is a Threaded Brass Pipe that is both the fixing for the tap to the worktop, and the pipe taking the filtered water
  • a brass Adapter Nut (I) screws into the Threaded Brass Pipe, on the other end of the Adapter Nut a 12mm plastic Speedfit screws in
  • the Speedfit then connects to the flexible thin diameter pipe.
What I am trying to do is take the Speedfit and filter out of the equation.
Instead,
  • screw a 12mm flexipipe (a standard tap tail) into the Adapter Nut (I)
  • the other end of flexipipe connects to the Cold Hard with a 1/2" connector.
I am concerned that the Adapter Nut is not designed to take mains pressure, as the filter and thin diameter flexible pipe would reduce this.

Is there anything I can do to make that adapter nut a better connection to withstand mains pressure? At present there is just a hard fibre washer between the brass Threaded Pipe and brass Adapter Nut.

Installation details: https://www.carron.com/wp-content/uploads/2019/02/Dante_Filter_Installation.pdf

Some photos may help...

5612356124
 

dickygrace

www.richardgracecars.co.uk
Messages
4,699
This is a new era for SM ;) @rossyl, I think this should win an award for the most random post in the forum’s history.
 

jasst

Member
Messages
792
You already had mains pressure going through the fitting, the only thing the small bore piping would do is to reduce the flow rate, not the pressure, it will be fine doing what your proposing. James . Qualified plumbing & heating engineer.
 

rossyl

Member
Messages
2,498
You already had mains pressure going through the fitting, the only thing the small bore piping would do is to reduce the flow rate, not the pressure, it will be fine doing what your proposing. James . Qualified plumbing & heating engineer.
Thanks James, good to know.

A couple of questions if you don't mind.

Would it be worth using Plumbers Tape on the brass pipe threads?
Also, is the fibre washer the best bet, so should I use something else?
 

jasst

Member
Messages
792
The flexi tap tail should have a rubber 'o' ring on it, it should be enough, only do it up hand tight, shouldn't need ptfe tape, fibre washer is best bet, if it leaks you may have to take other measures.
 

rossyl

Member
Messages
2,498
The flexi tap tail should have a rubber 'o' ring on it, it should be enough, only do it up hand tight, shouldn't need ptfe tape, fibre washer is best bet, if it leaks you may have to take other measures.
I'm concerned about the other measures !!

Thanks James. The Adapter Nut supplied with the sink had a dodgy thread, so getting a new one sent out...hopefully it's not a repeat and it all works this time.