Discontinued. No Longer Made.
The Smart Valve resembles previous versions with one critical difference: it has a built-in safety device. The device extends the threaded neck of the Smart Valve and retains the tank in the event of accidental tank/valve separation. The device also safely vents tank pressure without incidence of significant cylinder “take-off.”
(valve only). Must be professionally installed by a trained air smith. Most installs will cost around $20. Overall Rating for Smart Parts Smart Valve | 
