Double Accumulator Plates

A double Accumulator Plate is used when attachment to the the tank is not possible, the tank has a center drain, or the tank has a delicate liner such as vinyl, rubber, tile, etc. The double plate is a sandwich of two plates whereby the pulse deflects off the bottom plate instead of the tank. The single plate pulses against the tank, therefore, unless welded or bolted to the tank, it will recoil. The double plate is recoilless, which means it does not have to be attached to the tank; this is a critical advantage in poly, fiberglass and plastic tanks. Because the pulse does not hit the tank directly, delicate liners will not be damaged. Finally, the bottom plate prevents the pulse from entering the center drain/fill line.


A PULSAIR PVC plastic double accumulator plate, used when tank attachment is not permitted, the tank has a delicate liner, the tank has a center drain/fill line, or the solution to be mixed is incompatible with stainless or carbon steel.

Double accumulator plates are made by welding or bolting two single plates together. The clearance between the plates is about equal to that created when a single plate is attached to a tank. The top plate of a carbon or stainless steel double plate has a 4-inch pipe nipple for plumbing to the injection lines; the PVC double plate, a flange. Reinforced holes are bored through the top and bottom plates so that the plate assembles can be bolted to the tank bottom. Double plates are also designed so that they can be welded to the tank, which simplifies the installation in carbon steel tanks.

This two-plate system eliminates the pulse's vertical forces against the plate. There is an instant of time when the injected air is expanding under the plate and outward toward the edges, pushing against the plate like a piston. The pulsing action creates vertical forces between the single plate and the tank, forces that would push the plate away if it were not anchored. By using the double plate system, this force is contained by the welds or bolts holding the two plates together, rendering the double plate recoilless during the pulse.