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AL Series

Expanflex type AL Bottom Connection ASME Expansion Tanks are designed for use in hydronic heating/cooling systems to accept the additional fluid caused by the heating of the heat transfer fluid. The tank returns this fluid to the system as the system temperatures are lowered.

The bottom system connection allows the bladder to operate in a stress-free atmosphere as the heavy duty butyl bladder is always supported by the tank shell and the fluid is removed from the bottom of the tank where it rests during storage. This bottom connection also eliminates the tank as a place where system particles can settle out of suspension and later be released back into the system in a concentrated form, causing problems with pump seals, plugging balancing valves and system controls.

 

Specifications

• 100 % acceptance factor
• Permanent separation of air/water over the life of the system
• Water is “in the bag” – steel tank never touches the water
• Tanks have a replaceable bladder
• Can be manifolded for additional capacity or to fit through an existing door
• Factory precharged and field adjustable

Features AL Series

Model gal L Connection (in)
AL35 10 38 3/4"
AL50 13 50 3/4"
AL85 23 87 1"
AL130 35 132 1"
AL200 53 200 1 1/2"
AL300 79 299 1 1/2"
AL400 106 401 1 1/2"
AL500 132 500 1 1/2"
AL600 158 598 1 1/2"
AL800 211 798 1 1/2"
AL1000 264 999 1 1/4"
AL1200 317 1200 1 1/4"
AL1400 370 1400 1 1/4"
AL1600 422 1597 1 1/2"
AL2000 528 1999 1 1/2"
AL2500 660 2498 2"
AL3000L 792 2998 2"
AL3000S 792 2998 2"
AL4000 1056 3997 2 1/2"
AL5000 1320 4996 2 1/2"