Taco PAX partial acceptance bladder captive air expansion tanks are applied in commercial, institutional and industrial applications for
the control of pressure in potable systems. PAX bladder tanks use a field replaceable bladder to permanently separate the air and water
This permanent separation allows the tank to be precharged on the air side to the minimum operating or fill pressure. The precharge
eliminates the many gallons of water typically used to compress the atmospheric pressure found in a plain steel tank application. A
reduction in the required tank size when incorporating a captive air expansion results in tank sizes of up to 80% smaller when compared
to air cushion or plain steel tanks. In a PAX bladder tank the partial acceptance bladder is not attached to the tank wall like a diaphragm
tank. Rather it sits in the bottom of the expansion tank utilizing an internal assembly connecting to the stainless steel system connection
located on the top of the tank. The partial acceptance bladder inside the tank operates very much like a balloon. It is critical to the sizing
of any partial acceptance tank that both the bladder acceptance volume and total tank volume be adequate to accept the net system
expansion volume without exceeding the pressure limitations of the system design. Taco is pleased to offer a selection app for the
selection of these styles of tanks. Expanded water flows into the inside of the bladder. The air/precharge is on the outside of the bladder
between the bladder and the tank. As a result no water is in contact with the tank wall minimizing corrosion. In a partial acceptance
bladder tank the bladder is of limited acceptance volume and does not stretch.
Taco CA full acceptance bladder Captive Air expansion tanks are applied in commercial, institutional and industrial applications for the
control of pressure in hydronic systems. CA tanks use a field replaceable bladder to permanently separate the air and water. This
permanent separation allows the tank to be precharged on the air side to the minimum operating or fill pressure. This eliminates many
gallons of water to compress atmospheric pressure air in an air cushion or plain steel tank to the fill pressure. This allows the reduction
in Captive Air expansion tank sizes of up to 80% compared to air cushion or plain steel tanks. In a bladder tank the bladder is not
attached to the tank wall like a diaphragm tank. Rather it is suspended inside the tank very much like a balloon. Expanded water flows
into the inside of the bladder. Air is on the outside of the bladder between the bladder and the tank. As a result no water is in contact
with the tank wall minimizing corrosion. In a full acceptance bladder tank the bladder is of full acceptance volume and can expand to the
full volume of the tank. As a result, the bladder will not burst if the system experiences an overpressure condition
Taco CX partial acceptance Captive Air diaphragm expansion tanks are applied in commercial, institutional and industrial applications
for the control of pressure in hydronic systems. Diaphragm tanks use a diaphragm to permanently separate the air and water. In a
diaphragm tank the air is held captive by the use of a diaphragm with the expanded water being held on one side of the diaphragm and
air on the other. This permanent separation allows the tank to be precharged on the air side to the minimum operating or fill pressure.
This eliminates many gallons of water to compress atmospheric pressure air in an air cushion or plain steel tank to the fill pressure.
This allows the reduction in Captive Air expansion tank sizes of up to 80% compared to air cushion or plain steel tanks. In a diaphragm
tank the diaphragm is attached to the tank wall and cannot move inside the tank. As a result the tank has a limited acceptance volume.
In addition, there is some water in contact with the tank wall providing an opportunity for corrosion
Fabricated steel ASME shell - Heavy duty butyl bladder which is removable for inspection - 125 PSIG working pressure - 240 F
maximum operating temperature
Taco PAX partial acceptance bladder captive air expansion tanks are applied in commercial, institutional and industrial applications for
the control of pressure in potable systems. PAX bladder tanks use a field replaceable bladder to permanently separate the air and water
This permanent separation allows the tank to be precharged on the air side to the minimum operating or fill pressure. The precharge
eliminates the many gallons of water typically used to compress the atmospheric pressure found in a plain steel tank application. A
reduction in the required tank size when incorporating a captive air expansion results in tank sizes of up to 80% smaller when compared
to air cushion or plain steel tanks. In a PAX bladder tank the partial acceptance bladder is not attached to the tank wall like a diaphragm
tank. Rather it sits in the bottom of the expansion tank utilizing an internal assembly connecting to the stainless steel system connection
located on the top of the tank. The partial acceptance bladder inside the tank operates very much like a balloon. It is critical to the sizing
of any partial acceptance tank that both the bladder acceptance volume and total tank volume be adequate to accept the net system
expansion volume without exceeding the pressure limitations of the system design. Taco is pleased to offer a selection app for the
selection of these styles of tanks. Expanded water flows into the inside of the bladder. The air/precharge is on the outside of the bladder
between the bladder and the tank. As a result no water is in contact with the tank wall minimizing corrosion. In a partial acceptance
bladder tank the bladder is of limited acceptance volume and does not stretch.
Taco CA full acceptance bladder Captive Air expansion tanks are applied in commercial, institutional and industrial applications for the
control of pressure in hydronic systems. CA tanks use a field replaceable bladder to permanently separate the air and water. This
permanent separation allows the tank to be precharged on the air side to the minimum operating or fill pressure. This eliminates many
gallons of water to compress atmospheric pressure air in an air cushion or plain steel tank to the fill pressure. This allows the reduction
in Captive Air expansion tank sizes of up to 80% compared to air cushion or plain steel tanks. In a bladder tank the bladder is not
attached to the tank wall like a diaphragm tank. Rather it is suspended inside the tank very much like a balloon. Expanded water flows
into the inside of the bladder. Air is on the outside of the bladder between the bladder and the tank. As a result no water is in contact
with the tank wall minimizing corrosion. In a full acceptance bladder tank the bladder is of full acceptance volume and can expand to the
full volume of the tank. As a result, the bladder will not burst if the system experiences an overpressure condition
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