Veloci's Blaze External Tank Connection Kit with Deaerator (a.k.a. Tigerloop) has a two-valve system and allows contractors to connect a remote fuel source to the the heater for extended run times while also keeping air and moisture out of the fuel lines. This Premium accessory is what the big guys use for worry-free starts in any condition, including Canada where -20° F is warm in January! Install takes about 15 minutes and all hardware is included along with illustrated instructions.