The 5 lbs co2 canister which has many prictical application such as aquariums ( freshwater and saltwater) Hydroponic plant growing, Many sports application includes the brass valve .
Remember with any tank you will need some type of regulator to regulate the flow of the co2 gas out 5 lb tank even though it does have an off on valve as pictured.
With this price currently this 5 lbs tank is a steal. The co2 in here will last 2x as long as in a 5 lbs unit
Shipping of this Canister to Canada will be 38.96 usps