Automatic pressure sealing pop-up valve.
Allows for fast pressurization of the blast pot.
Durable reinforced rubber mushroom head.
Dome at bottom is 125mm diameter
Stem is approx. 150mm long, and 21mm ext. diameter, with 1/2"bsp male thread at one end
Very hard wearing & long lasting. Fits C50L, C100L, C140L, 14A, 20A, 24A, 1440, 2040, 2452, and many other blast pots with 1" internal pipework.