Mechanical Room Supplies - Bladder Expansion Tanks

Designed to absorb expansion of non-potable fluids in typical hydronic & cooling systems. Bladder material is suitable for hot water application. Installation of tank will help eliminate unnecessary blowing of relief valves and lost BTUs.

ASME Section VIII, Division I
Carbon Steel Construction
Maximum Temperature 240º F
Primed, Painted Exterior
Permanent Separation of Air and Water
Fully Replaceable Bladder
Carbon Steel System Connections
Factory Air Charged to 12 P.S.I
Fully Adjustable in the Field For Non-Domestic Use

WPA & WFA Series

Removable and replaceable heavy-duty Butyl rubber bladder
Economical “Partial Acceptance” WPA Series for small installations and chilled water applications
WFA “Full Acceptance” Series for large expanded fluid volumes
ASME constructed and stamped
NSF Approved Bladder

Optional Features

Higher working pressures available
Epoxy coated or stainless steel covers optional
“Bulls Eye” sight glass
Seismic mounting clips
EPDM Bladder

WLA Series

The American/Wheatley HVAC Expansion Tank is ASME Stamped and constructed to ASME Section VIII. The removable bladder can be field replaced if needed. Standard construction is ASME 125 psi, but higher pressures are available. The tanks are related to 240 degrees working temperatures and come equipped with a ring base, lifting rings and NPT system connection. The air charging valve is provided for adjusting pressures in the field. Each tank comes standard with a 12 psi Precharge.

BDT Series

Designed to absorb expansion of fluids in typical hydronic systems. The BDT Tank is designed for storage of potable water for pressure boost systems as well as typical cooling and heating applications. Bladder material is suitable for hot water applications. Installation of tank will help eliminate constant pump use prolonging pump life and unnecessary blowing of relief valves.