I'm having trouble removing them, despite using spanners, hammer & blowtorch. It's a 3 way momo heating valve. The nut I can't remove is on the underside of the thing, and access to it is terrible. I can get a pair of pump pliers onto it, but none of the other half a dozen other 32mm tools will fit due to their head recesses being at the wrong angle. With the pump pliers on I simply can't get enough force on them to turn it. Getting a hammer in there is impossible, the pliers are right up against the hot cylinder. I've tried blowtorching it, still no joy. Not that I'd expect joy from that sort of thing, but it was worth a try.

There's only one thing I can think might work, an open end spanner head with a square hole in it for a socket bar. But I don't know what those are called, so bit hard to search for them. Any other ideas welcome! And no, replacing the head has already been tried.


NT

wrote in message
...

I'm having trouble removing them, despite using spanners, hammer &
blowtorch. It's a 3 way momo heating valve. The nut I can't remove is on
the underside of the thing, and access to it is terrible. I can get a pair
of pump pliers onto it, but none of the other half a dozen other 32mm tools
will fit due to their head recesses being at the wrong angle. With the pump
pliers on I simply can't get enough force on them to turn it. Getting a
hammer in there is impossible, the pliers are right up against the hot
cylinder. I've tried blowtorching it, still no joy. Not that I'd expect joy
from that sort of thing, but it was worth a try.

There's only one thing I can think might work, an open end spanner head
with a square hole in it for a socket bar. But I don't know what those are
called, so bit hard to search for them. Any other ideas welcome! And no,
replacing the head has already been tried.

Something like this?:
https://www.machinemart.co.uk/p/clar...Fc6T7QodPlYN_Q

wrote:

There's only one thing I can think might work, an open end spanner head
with a square hole in it for a socket bar. But I don't know what those
are called, so bit hard to search for them. Any other ideas welcome! And
no, replacing the head has already been tried.

Crow's foot spanners.

--
Chris Green
·

On 06/02/2017 15:20, wrote:
I'm having trouble removing them, despite using spanners, hammer& blowtorch. It's a 3 way momo heating valve. The nut I can't remove is on the underside of the thing, and access to it is terrible. I can get a pair of pump pliers onto it, but none of the other half a dozen other 32mm tools will fit due to their head recesses being at the wrong angle. With the pump pliers on I simply can't get enough force on them to turn it. Getting a hammer in there is impossible, the pliers are right up against the hot cylinder. I've tried blowtorching it, still no joy. Not that I'd expect joy from that sort of thing, but it was worth a try.

There's only one thing I can think might work, an open end spanner head with a square hole in it for a socket bar. But I don't know what those are called, so bit hard to search for them. Any other ideas welcome! And no, replacing the head has already been tried.


NT

Can you undo the other two pipes and then hold the offending nut still
while you rotate the body of the valve?
--
Cheers,
Roger
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On 2/6/2017 3:45 PM, Richard wrote:
wrote in message
...

I'm having trouble removing them, despite using spanners, hammer &
blowtorch. It's a 3 way momo heating valve. The nut I can't remove is
on the underside of the thing, and access to it is terrible. I can get
a pair of pump pliers onto it, but none of the other half a dozen
other 32mm tools will fit due to their head recesses being at the
wrong angle. With the pump pliers on I simply can't get enough force
on them to turn it. Getting a hammer in there is impossible, the
pliers are right up against the hot cylinder. I've tried blowtorching
it, still no joy. Not that I'd expect joy from that sort of thing, but
it was worth a try.

There's only one thing I can think might work, an open end spanner
head with a square hole in it for a socket bar. But I don't know what
those are called, so bit hard to search for them. Any other ideas
welcome! And no, replacing the head has already been tried.

Something like this?:
https://www.machinemart.co.uk/p/clar...Fc6T7QodPlYN_Q


Google for 32 mm crows foot spanner