Danfoss Randall 015G4550 RA/VL TRV Head only Brand New Comes Without Box Never Been Used Crafted from high-quality plastic and steel, this TRV valve head is built to last. It has a white colour finish The Danfoss Randall Aero RA 015G4590 RA-Click TRV Head Enhance your home's heating system with the Danfoss Randall Aero RA 015G4590 RA-Click TRV Head F&F. This TRV valve head is designed for control and is compatible with various heating systems. With a multi-positional system configuration, this head is suitable for both horizontal and vertical radiator orientation