PAX Series Potable Water Expansion Tanks   

For permanent separation of air and water

These bladder-type tanks provide permanent separation of air and water. All wetted components are built of FDA-approved materials. Available in 11 models to meet all your potable water needs. They feature a removable heavy-duty Butyl rubber bladder, fabricated steel shell designed and constructed per ASME Section VIII Div 1. Each is factory pre-charged to job specifications. Standard bladder: 125 PSIG (862 kPa). Optional bladder: 150 PSIG (1,034 kPa).

PAX Series
Potable Water Expansion Tanks
Capacity: 8 - 132 Gal. (30 - 500 liters) • Diameter (in.): 14 - 24 • Height (in.): 25 - 85

PAX Series Potable Water Expansion Tanks

Instruction Sheets (2)

TitleSheet NumberEffective Date
PAX Series Expansion Tanks402-10012/01/2014
PAX Series Replacement Bag402-10112/01/2014
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PAX Series Potable Water Expansion Tanks

Submittal Data Sheets (3)

TitleSheet NumberEffective Date
CW Series Expansion Tanks401-04310/01/1995
PAX Series Expansion Tanks (-150) (For Potable Water Applications)401-08412/01/2014
PAX Series Expansion Tanks (Certified to NSF/ANSI 61-G for Potable Water Applications)401-084P07/25/2018
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