This is the best valve to buy for installing a towel rail as dual fuel as it allows the flow/return to be located on the same side of the radiator - leaving the opposing side free for the element (so no T-Piece is required as with a standard dual fuel set-up with a pair of valves). You are able to have the flow and return going in and out of this valve as the flow goes up the tube and the return comes back down the outside of the tube. Angled orientation and left sided (so valve sits on the left hand side of the product with the TRV head reaching out to the right in line with the bars). Chrome in colour. Full contents list: 1x Chrome plated brass integrated thermostatic valve body (to fit into a single tapping on a radiator, and giving you 50mm pipe centres), 1x Chrome plated Plastic/Brass Thermostatic head, 2x Chrome plated brass Nut for adapter, 2x Brass Nipple for Multilayer pipe adapter, 2x Rubber Sealing for copper pipe adapter, 2x Brass clamping ring for copper pipe adapter, 2x B