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Home > Tank Styles > Bladder Tanks

Bladder Tanks

Bladder tanks are required in a closed loop heating or chilled water HVAC system to absorb the expanding fluid and limit the pressure within a heating or cooling system. A properly sized expansion or compression tank will accommodate the expansion of the system fluid during the heating or cooling cycle without allowing the system to exceed the critical pressure limits of the system. The expansion or compression tank uses compressed air to maintain system pressures by accepting and expelling the changing volume of water as it heats and cools. Some tank designs incorporate a diaphragm or bladder to isolate the expanded water from the pressure controlling air cushion. As water is expanded, it is contained in the bladder preventing tank corrosion and water logging potentials. The pressure controlling air cushion is pre-charged at the factory and can be adjusted in the field to meet critical system requirements. This design and operation of this style of expansion tank allows the designer/specifying engineer to reduce tank sizes up to 80%.

Bladder tanks have a totally replaceable bladder. This tank must be equipped with large service openings and also allow the bladder to be replaced without having to remove the tank from its mounting.

Were you looking for non-replaceable bladder tanks?

Bladder Tank Models & Applications

HVAC Expansion Tanks

NLA Expansion Bladder Tanks (ASME)

The NLA Series are manufactured to ASME specifications. The NLA are industries broadest line of bladder style tanks. These vessels are designed using a heavy-duty replaceable butyl bladder, and are offered in sizes ranging from 10 to 4,000 gallons, with working pressures of 125 psi (standard), 200 and 250 psi.

NLA Sizes and Specifications

NLA Jumbo Sizes and Specifications

NLA with WessGuard Protection

NLA 35 to 50WG

NLA 85 to 800LWG

NLA 1000 to 15000WG

NLAP Expansion Bladder Tanks (ASME)

The NLAP Series are manufactured to ASME specifications. The NLAP is a top system connection design that incorporates a heavy-duty replaceable butyl bladder, and are offered in sizes ranging from 11 to 290 gallons

NLAP Sizes and Specifications

NL Expansion Bladder Tanks (Non-ASME)

The NL Series are designed using a heavy-duty replaceable butyl bladder, and are offered in sizes ranging from 2 to 132 gallons.

NL Sizes and Specifications

Thermal Expansion Tanks

TXA Thermal Expansion Bladder Tanks (ASME)

The TXA Series are manufactured to ASME specifications. The TXA's are industries broadest line of bladder style tanks. These vessels are designed using a heavy-duty replaceable butyl bladder, and are offered in sizes ranging from 10 to 528 gallons, with working pressures of 125 psi (standard), 200 and 250 psi.

TXA Sizes and Specifications

TXA Submittal

TXA with WessGuard Protection

TXA 35 to 50WG

TXA 85 to 800WG

TXA 1000 to 2000WG

TX Thermal Expansion Bladder Tanks (Non-ASME)

The TX Series are designed using a heavy-duty replaceable butyl bladder, and are offered in sizes ranging from 2 to 80 gallons.

TX Sizes and Specifications

Hydropneumatic Tanks

FXA Hydropneumatic Bladder Tanks (ASME)

The FXA Series hydropneumatic tanks are manufactured to ASME specifications. The FXA's are industries broadest line of bladder style tanks. These vessels are designed using a heavy-duty replaceable butyl bladder, and are offered in sizes ranging from 10 to 4,000 gallons, with working pressures of 125 psi (standard), 200 and 250 psi.

FXA Sizes and Specifications

FXA Submittal

FXA Big Submittal

Stainless Steel Model Available

FX Hydropneumatic Bladder Tanks (Non-ASME)

The FX Series hydropneumatic tanks are non-code vessels designed using a heavy-duty replaceable butyl bladder, and are offered in sizes ranging from 2 to 528 gallons.

FX Sizes and Specifications

SSA Shock & Surge Tanks

SSA Series Bladder Tanks

The SSA Series Shock Arrestors are manufactured to ASME specifications and are rated to 240°F and 250 PSI. Tanks are factory pre-charged to 30 PSI and field adjustable and are offered in sizes ranging from 10 to 660 gallons.

SSA Sizes and Specifications

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