double check valve??

[lincolnric]

Hi,
the hot water tap in my kitchen has lost all its pressure, the best you can get is a drip! I've had a look underneath at the pipework and there is an isolation valve and what looks like a double check valve above it ( similar to the isolation valve but with a bolt instead of the screwdriver adjustment head).
Any ideas if it could be a double check valve, and if it is can I just get rid of it and replace it with a piece of pipe, as I think it could be this which is causing the lack of water?
Any help would be much appreciated.

Thanks.

 

[oilman]

Unfortunately we're not at your house, nor telepathic so unless you say where your hot water started and it's route to the tap, help is unlikely.

 

[Nige F]

welcom to diy help not You`re right on all counts you`ve probably done the job anyway by now