Why Use Gas Bottles With Accumulators?
Product Announcement from Tobul Accumulator, Inc.
Why Use Gas Bottles With Your Accumulators?
A standard hydro-pneumatic accumulator can provide approximately 25-30% of its fluid capacity in usable volume (e.g., approx. 38 gallons of capacity in a piston-type to obtain 10 gallons of fluid volume; approx. 42 gallons of capacity in a bladder-type to obtain 10 gallons of fluid volume).
The size of the accumulator can be reduced, though, by providing additional gas volume to the accumulator in order to expel a greater percentage of usable fluid volume from the unit (e.g., with Piston-type, the addition of approx. 28 gallons of pressurized gas capacity will allow the reduction of the necessary accumulator volume to 14 gallons and still receive 10 gallons of usable fluid volume; with Bladder-type, the addition of approx. 31 gallons of pressurized gas capacity will allow the reduction of the necessary accumulator volume to 11 gallons and still receive 10 gallons of usable fluid volume). ... Note: the above approximations are based on 3000 PSI max pressure/2000 PSI min pressure.
Since gas bottles are simply pressure vessels utilized to store a quantity of pressurized gas (normally nitrogen) without an internal bladder or piston, the effective cost per gallon of volume is less than the accumulator itself, thereby making gas bottles a cost-effective method of supplementing fluid volumes.
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