Dishwasher stop valve not working

TCPIP_Fox

I needed to disconnect the dishwasher to replace the hose, as it's starting to drip water slightly.  After I set the stop valve to off, unplugged the hose over the sink water was still coming out steadily.  it looks like the stop valve didn't close, going to call the plumber to take a look and sort it.  Just wondering how much it'll cost to fix it? 

Pic of the stop valve.

grumbler

A new valve costs £2.

It's 15 minutes DIY job to replace it.

Bendy_House

Combi system? If so, stopcock off and water stops. Remove and replace that valve - item cost ~£5, time to do the job, ~30 minutes.

Non-combi will likely involve more 'draining down' first.

Bendy_House

Does the red lever feel a bit 'wobbly' in use - a bit 'squishy'? If so, it might not be turning the actual valve it's fitted on to properly.

There's a screw in its end - if you undo this, the red lever comes off and you can see if a small spanner of plier will turn the metal spindle a bit more. Turn it so's it's gone a full 90o from the 'open' position.

TCPIP_Fox

Bendy_House said:

Combi system? If so, stopcock off and water stops. Remove and replace that valve - item cost ~£5, time to do the job, ~30 minutes.

Non-combi will likely involve more 'draining down' first.

It's an immersion heater, the dishwasher is connected to the hot water supply.  I've tried to turn off the hot water supply, but it's really tight, the plumber who touched it last must've been the hulk.  Here's a pic of the hot water tap, if you got any tips on how to get it to turn? Don't have any tools just bare hands.  The tap does move slightly left and right. 

TCPIP_Fox

Bendy_House said:

Does the red lever feel a bit 'wobbly' in use - a bit 'squishy'? If so, it might not be turning the actual valve it's fitted on to properly.

There's a screw in its end - if you undo this, the red lever comes off and you can see if a small spanner of plier will turn the metal spindle a bit more. Turn it so's it's gone a full 90o from the 'open' position.

Thanks will try this. It does feel a bit wobbly!  I turn it there's not resistance like the washing machine one. 

Bendy_House

That red gate valve 'just' needs a darned good heave.

Do you have a small adjustable spanner? If so, you can remove the red wheel and fit the spanner on to the squared-off spindle. Give it a firm clockwise turn.

If you do get it moving, the secret then is to open if fully when you're finished with the job, and then close it a half-turn shut. This will make it a lot less likely to seize.

Ditto for the red-levered valve. Unscrew the red plastic lever, and place the adjustable on the spindle flats. Turn it a full 90o. Bear in mind that, without the red plastic lever, this metal spindle might just keep on turning round and around - on...off...on...off... so just stop when (I think) the flats are in line with the pipe. If that makes it 'on', then turn it 90o more  

Worth buying a set of adjustable spanners - you really want a wee one for such jobs. Mine is only around 3" long.

TCPIP_Fox

Bendy_House said:

That red gate valve 'just' needs a darned good heave.

Do you have a small adjustable spanner? If so, you can remove the red wheel and fit the spanner on to the squared-off spindle. Give it a firm clockwise turn.

If you do get it moving, the secret then is to open if fully when you're finished with the job, and then close it a half-turn shut. This will make it a lot less likely to seize.

Ditto for the red-levered valve. Unscrew the red plastic lever, and place the adjustable on the spindle flats. Turn it a full 90o. Bear in mind that, without the red plastic lever, this metal spindle might just keep on turning round and around - on...off...on...off... so just stop when (I think) the flats are in line with the pipe. If that makes it 'on', then turn it 90o more  

Worth buying a set of adjustable spanners - you really want a wee one for such jobs. Mine is only around 3" long.

Got it all sorted with your help, thanks a lot! I was a bit dumb and didn;t realise the main stopcock stops the hot water too, i didn't run the taps to clear the pipes - doh!.  Got the valve turned off, going to get a new one and replace it.