Boiler Top-Up Valve (Mamod Brunel)

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RMurphy195
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Boiler Top-Up Valve (Mamod Brunel)

Post by RMurphy195 » Sat Jun 27, 2020 1:54 pm

Another step on the learning curve ..

Loco is a Mamod Brunel mk3

In the two pictures below there is the topup valve from the boiler, and syringe attachment, both of which I'm sure most of you are familier with but, as a complete beginner, I am not.

The valve appears to work a little like a woods valve (or Dunlop valve).

The syringe was bought from a dealer at a model steam fair in response to the question "Have you got something I can use to top up the boiler on a ..."

Clearly the syringe attachment doesn't match upwith the topup valve, unless I'm missing something.

Advice, anyone? (e.g. what is it that I really need)

Thanks - Richard
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tom_tom_go
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Re: Boiler Top-Up Valve (Mamod Brunel)

Post by tom_tom_go » Sat Jun 27, 2020 2:18 pm

I have used one of these for years as a top up bottle:

https://www.jacksonsminiatures.com/railway.html

The 'syringe attachment' you have been sold in the photo looks like just a piece of copper pipe which won't create a seal when inserted into the top up valve so you need to use an appropriate sized piece of plastic or silicone tubing to connect to your water bottle.

RMurphy195
Posts: 3
Joined: Thu Nov 28, 2019 6:07 pm

Re: Boiler Top-Up Valve (Mamod Brunel)

Post by RMurphy195 » Sat Jun 27, 2020 9:35 pm

tom_tom_go wrote:
Sat Jun 27, 2020 2:18 pm
I have used one of these for years as a top up bottle:

https://www.jacksonsminiatures.com/railway.html

The 'syringe attachment' you have been sold in the photo looks like just a piece of copper pipe which won't create a seal when inserted into the top up valve so you need to use an appropriate sized piece of plastic or silicone tubing to connect to your water bottle.
Thanks for the link - the syringe was only a couple of quid. chuffed2bits have something similar, and also silicon tube that I might be able to use as well (they are not far away if I need to pop over).

I've dug out a piece of household wire insulation that just fits over the end of the copper and makes a tight fit into the valve, so I'll see how that goes (as long as it doesn't melt!).

At present it takes a lot of pressure to push water through the valve, have to see what its like when refitted to the boiler, maybe the sleeving in the valve softens a bit when it heats up.

Thanks again - R

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