Thermostatic valve-opening circular screw in enclosed space

[ADONAI]

hi,
trying to unscrew the circular screw using a long wrench -see pic.

but due to enclosed space theres no room to move the wrench ,is there are an alternative tool i can use ? any links to scrwfix etc appreciated.

thanks

Al.

 

[stem]

Link here to Locking Pliers (aka Mole Grips)?

 

[ianmcd]

Turn the sensor head to max then should only be hand tight, you are trying to remove it when closed, if you cant remove it using that tool you posted then get someone who knows what they are doing

 

[stem]

As I read it, I thought @ADONAI was trying to get a "circular screw" out of the wall at the side of the radiator and couldn't swing the grips because of the radiator.

 

[ADONAI]

the locking pliers did it-thanks !

 

[ianmcd]

As I read it, I thought @ADONAI was trying to get a "circular screw" out of the wall at the side of the radiator and couldn't swing the grips because of the radiator.

View attachment 185809

Sorry my bad, I thought he was trying to take the sensor head off