Accumulator and method of making and using the same

A method comprising:

• providing a fluid accumulator comprising, a housing comprising an opening and at least one movable piston wherein the piston separates an interior of the housing into a first chamber constructed and arranged for containing a first fluid, and a second chamber constructed and arranged for containing a second fluid, and wherein the first chamber has an opening and an exhaust constructed and arranged to expel excess fluid wherein the first chamber;
• moving first fluid into the first chamber to displace the piston;
• and
• expelling excess first fluid through the exhaust when the pressure provided in the second chamber is exceeded by the pressure provided by the first fluid at a certain value.