Replacement Radiator Valve Caps – Set of 4 These adjustable radiator valve caps were born from a project where a customer wanted to update their radiator system without losing the classic look of their older home. They’re a simple, effective solution for refreshing your valves while keeping your home’s authentic charm intact. Designed to fit standard valves with a slotted spindle, these caps are easy to install. Please take a look at the photos to confirm they are a match for your valves. If you’re at all unsure, just send me a message with a quick photo or the dimensions of your spindle and I’ll be glad to help ☺️!