Freudenberg / TOBUL Bladder Accumulators

– Widely Accepted Industry-Standard Design
– Quick Response to Fluid System Demands
– Very Contaminant Tolerant
– Completely Repairable
– A Variety of Models Available

Reference Material:

Bladder Accumulators (PDF)

Top Repairable Bladder Accumulators (PDF)

BOTTOM REPAIRABLE

TOP REPAIRABLE

OPEN TOP REPAIRABLE

BLADDER REPAIR KITS

Bottom repairable bladder-type designs are the most commonly found units in the marketplace. Fluid capacities are generally limited to a small variety of sizes (one quart to fifteen gallons/approximately 1 Liter to 57 Liters).

General Design Data
Maximum Working Pressure: 3,000 PSI (207 Bar)
(Buna/Nitrile) Operating Temperature: -20° to +200° F (-28° to 93° C)
Bladder for petroleum base oil.
Shell ASME U stamp OPTIONAL.
Specifications subject to change without notice.

TOP REPAIRABLE TBRT MODELS

Top repairable bladder-type designs are readily available in the marketplace, but much less commonly seen than bottom repairable units. TBRT’s are more expensive than TBR’s since an additional gas port body and anti-extrusion ring is necessary to completely seal the accumulator shell.
Top Repairable Versus Bottom Repairable:
The distinct advantage of a top repairable unit is the fact that a unit may be repaired without dismounting an accumulator from the system. As long as the unit can be isolated and the system pressure relieved, the top gas port assembly can be accessed and a replacement bladder installed.

General Design Data
Maximum Working Pressure: 3,000 PSI (207 Bar)
(Buna/Nitrile) Operating Temperature: -20° to +200° F (-28° to 93° C)
Bladder for petroleum base oil.
Shell ASME U stamp OPTIONAL.
Specifications subject to change without notice.

OPEN TOP BLADDER ECONOLATER II MODELS

The “EconoLator II” is a Tobul product series which is a transition from piston-type to bladder-type accumulators, and incorporates characteristics of both designs.

Utilizes a cylindrical steel cylinder with heads similar to piston-types. The fluid cap (bottom) is precision machine-welded into the steel cylinder to form a durable vessel.

Utilizes an upper cap and threaded ring assembly to retain and seal the open-topped bladder, providing a simple “top-repairable” advantage; e.g., unit does not have to be removed from a vertically mounted application in order to replace bladder as long as the accumulator can be isolated from system pressure and physically accessible.