A very peculiar shaped ballvalve in the loft water tank

[spader]

I have been trying to find the exactly same shaped ballvalve from the internet search, but couldn't do so.
Anyone familiar with it? Or have one of these?
I am going to taking it out to have a look into the jet and washers in it.
Getting the new ones and replacing them, which causes leak.

I take it it is all in one piece, and can be turned to be taken out from the threaded pipe which connects the ballvalve at the back into the tank, and which goes into the tee connector outside of the tank?

 

[Wayners]

Just buy a new one and fit.
Just not worth the effort and what with corrosion and lime scale the old one needs chucking.
If you research and gently nip up new one not over enthusiastically tighten, you will be fine with no leaks.
You get leaks overtightening or dirt on fitting.
10min job

 

[Wayners]

To answer..
It might be a old British made Portsmouth float valve..
Unlikely to find one online now

 

[HERTS P&D]

You have a PART 1 float valve, remove it and fit a Part 2:

https://www.toolstation.com/made4tr...yZwQLaJxY5E9rH_J2VvaKUmIIWPc7QyRoCd9gQAvD_BwE

Andy

 

[spader]

Yes, managed to take it out from the tank. It was very tricky job due to the nut on the tank connecting the valve was thin and very difficult to grab with all the tools I tried. Finally I had to go and get the old basin wrench in the shed, and it started moving the nut.

And then some WD45 and the adjustable spanner did the job. Thank you all for your info and advice. Yes, I will go and get a new valve and fit it in due course.

 

[spader]

You have a PART 1 float valve, remove it and fit a Part 2:

https://www.toolstation.com/made4tr...yZwQLaJxY5E9rH_J2VvaKUmIIWPc7QyRoCd9gQAvD_BwE

Andy

Are there PART2 valves with 3/4 fitting size? Most of the 3/4 valves seem to be PART 1.

 

[Hugh Jaleak]

Been connected with a Female Iron fitting, little wonder you had fun getting it apart! Replace with a Bent Tap Connector, (don't forget the Washer), and it'll be much easier to connect the new Float Valve.

The old Part 1 valves were prohibited from use on most Cisterns some years ago, and it is unlikely there will be a situation where a Part 2 cannot be fitted as a replacement.

 

[spader]

Been connected with a Female Iron fitting, little wonder you had fun getting it apart! Replace with a Bent Tap Connector, (don't forget the Washer), and it'll be much easier to connect the new Float Valve.

The old Part 1 valves were prohibited from use on most Cisterns some years ago, and it is unlikely there will be a situation where a Part 2 cannot be fitted as a replacement.

Yes, it was quite tough taking it out. The washer/nut on the tank got rounded in the middle of turning, and was slipping in the wrench, which made turning almost impossible.

The local screwfix don't seem to stock any 3/4 part2 ballcock valves at all. Not sure why that is the case. But I can see some available in Amazon.

Because of the size of the hole on the tank where the old valve was on, it seems only 3/4 valves would fit easily without extra fittings. Using 1/2 will need some reducing fittings from 3/4 -> 1/2 due to the original fitting size was 3/4.

 

[spader]

There are also High Pressure and Low Pressure version. Which one should be fitted to the water tank?

 

[Hugh Jaleak]

High Pressure for Mains supplies, Low pressure are used for Cistern Fed Toilets etc.

 

[spader]

High Pressure for Mains supplies, Low pressure are used for Cistern Fed Toilets etc.

Not quite sure what it means. The water tank is fed by the mains water pipe. And the tank feeds water to the toilet, wash basins and bath tub via gravity.

A ballcock will be installed in the water tank for controlling the water level in the tank coming from the mains water pipe.

Does the water tank need high pressure or low pressure ballcock?

 

[endecotp]

Not quite sure what it means. The water tank is fed by the mains water pipe. And the tank feeds water to the toilet, wash basins and bath tub via gravity.

A ballcock will be installed in the water tank for controlling the water level in the tank coming from the mains water pipe.

Does the water tank need high pressure or low pressure ballcock?

High pressure.