Replacing a Grohe Dual Flush Valve - 42314000

[RobFJ]

Right at the end of the warranty period (now expired), a grohe engineer replaced one of these valves in a leaky cistern. As we had two others in the house, he kindly left two more flush valves in case those failed as well.

We're now getting both of these not closing properly so there is a continual water trickle into the toilet bowls.

There are no instructions in the box and I can't find anything on line but it just seems to be a push fit. However, when the grohe engineer replaced the valve, it must have taken several attempts over ten minutes to get it in place correctly

As a practical, 'non-plumber'. I don't want to get into the situation where I take the faulty part out and I can't get the new one in.

Can anyone give me any advice or a video link before I start.

Thank in advance

 

[terryplumb]

Show us a pic of valve in cistern ,and a pic of new one.

 

[RobFJ]

Not much to photograph in situ - the cistern has a fixed plastic cover over the whole top with a small access point at the front.

The length of the new part is 280mm !

 

[tincup]

try here

 

[RobFJ]

Thanks for the suggestion. Not quite the same part and the content seemed to cover just changing the refill level