Just bought a new bi-directional TRV to suit a new radiator.
There are no markings on the body to indicate which way the flow should go.
The supplier assures me it doesn't matter, but I always understood it does.
Advice appreciated.
I have two pictures of the valve to help, one end has a small hole near the base (the outlet from the TRV blocking pin) and the other has a large hole, which has a semi-circular chamber into the underside of the liquid capsule.
There are no markings on the body to indicate which way the flow should go.
The supplier assures me it doesn't matter, but I always understood it does.
Advice appreciated.
I have two pictures of the valve to help, one end has a small hole near the base (the outlet from the TRV blocking pin) and the other has a large hole, which has a semi-circular chamber into the underside of the liquid capsule.