28mm gate valves


Ad

Advertisements

G

grimly4

Are these repairable if they leak with a new washer or is it new gate
valve time?

The 28mm gate valves I am talking about are:

http://www.screwfix.com/p/28mm-gate-valve/43410
It's not unusual for a weep to develop from the shaft. Assuming it's
just the seal/packing, you can tighten down the gland nut a touch and
it will cease leaking for up to a year/decade. Next stage is to repack
or re-seal it. If the shaft is corroded, bin it.
 
D

Dave Liquorice

If the shaft is corroded, bin it.
It's a get valve bin it anyway. Blooming hopeless things once they
have been in service for a few yearsthey won't shut off fully and
that's even if you excercise them every year as well.
 
G

grimly4

It's a get valve bin it anyway. Blooming hopeless things once they
have been in service for a few yearsthey won't shut off fully and
that's even if you excercise them every year as well.
Oh, they're horrible things. I had a couple of unused ones lying
around which I had to press into service as a stopgap measure, with
the intention of replacing them with proper lever valves. Guess how
long they'll be there...
 
H

harry

It's a get valve bin it anyway. Blooming hopeless things once they
have been in service for a few yearsthey won't shut off fully and
that's even if you excercise them every year as well.

Depends on the quality. There are several classes of gate valve too.

Many are made of alloys unsuitable to the water they work in. Cheap
shit.
Don't imagine a ball valve for example will last any longer if it's
made out of the same shit which they usually are. (Or worse)

A good one is made out of bronze not brass. Or stainless steel.
You won't find bronze valves at B&Q.
Most of the so-called heating engineers we have these days don't know
the difference.

Taper wedge gate valves should not be installed where a dead tight
shut off is needed. Due to their design, they will inherently pass.
In practice, there are few situations needing a dead tight shut off.
But at least they can be serviced which a ball valve can't be.
 
Ad

Advertisements

T

The Medway Handyman

Oh, they're horrible things.
Agreed. Poxy things are the spawn of Satan. If they do actually manage
to shut off, they can stick in the off position.
 
Ad

Advertisements


Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.

Ask a Question

Similar Threads

Fitting a 28mm gate valve? 7
Connecting 28mm gate valve to 1" male fitting 11
28mm stop valve 8
Gate valve? 8
Gate Valves 3
Gate Valves 7
Gate Valve or Ball Valve 15
Gate valve broken 0

Top