Scuba Diving Accessory: Cupped Vinyl Tank Valve Caps
A simple dust cap designed to quickly protect your tank valve when not diving.
Available in a range of colours including ones to clearly identify nitrox only tanks for gas refilling purposes.
Excellent products, excellent website and ordering system, and I'll be back for some log book inserts as soon as I've finished my current dive log (which should be in a few weeks!).