Please e-mail us with any questions or comments. Accumulators as shipped from the factory contain neither a nitrogen gas charge or oil under pressure. However, there may be a very low nitrogen charge left in the accumulator from the factory test.
Standard accumulators are for use with petroleum base fluids.
If you are using fluids other than a petroleum base fluid, the distributor of Wilkes and McLean, Ltd. should be contacted to determine if the standard accumulator is compatible with your fluid. The standard accumulator is rated for a maximum working pressure of 3000 P.S.I. DO NOT exceed this maximum pressure rating. Bladders for wider temperature ranges and special fluids are available. DO NOT disassemble any accumulator without first making certain that the gas charge has been completely vented. DO NOT weld or in any way machine the accumulator shell.