The Drayton TRV4 straight and lockshield valve in Chrome 07 05 171 is a high-quality central heating radiator accessory. Made by the trusted brand Drayton, this valve is perfect for controlling the temperature and flow of hot water in your home heating system. With its sleek chrome finish, it adds a stylish touch to any radiator while providing efficient heating maintenance. Ideal for DIY enthusiasts and professionals alike, this valve is a reliable and essential component for your heating system.