Towel rail valves help regulate the amount or flow of hot water coming into the towel rail. Thermostatic valves are self-regulating and automatically adjust the flow of hot water whereas a manual valve must be turned manually by the user.
These copper plated valves are supplied un-lacquered. You can leave the surface to naturally tarnish over a period of use/time, or maintain the finish using a metal polish. We would recommend Autosol metal polish as being a suitable product to achieve this.