A device comprising: a body having a first side and a second side, wherein the first side has a first input port and the second side has a second output port , and wherein said body has a chamber therein, wherein the chamber is in fluid communication with the first port and the second port ; a dampening membrane comprising a first material selected from the group consisting of: silicone rubber, fluoropolymer elastomer, perfluoroelastomer, biocompatible materials, polyurethane, rubber, neoprene, ethylene propylene diene monomer rubber, and combinations thereof which deforms elastically in response to changes in fluid pressure, wherein at least a first portion of said dampening membrane defines a top portion of the chamber in said body and at least a second portion of said dampening membrane is sealingly secured to said body ; a degassing membrane or a de-bubbling membrane comprising a second material selected respectively from the group consisting of: silicone rubber, polytetrafluoroethylene, fibrillated polymers, and combinations thereof, or from the group consisting of: polytetrafluoroethylene, TEFLON, fibrillated polypropylene, and combinations thereof, wherein at least a first portion of said degassing membrane or de-bubbling membrane defines a bottom portion of the chamber in said body and at least a second portion of said degassing membrane or de-bubbling membrane is sealingly secured to said body ; and a top cover defining a cavity in said body above said dampening membrane , wherein the cavity allows the dampening membrane to extend upwards in response to increased fluid pressure within the chamber . a body having a first side and a second side, wherein the first side has a first input port and the second side has a second output port , and wherein said body has a chamber therein, wherein the chamber is in fluid communication with the first port and the second port ; a dampening membrane comprising a first material selected from the group consisting of: silicone rubber, fluoropolymer elastomer, perfluoroelastomer, biocompatible materials, polyurethane, rubber, neoprene, ethylene propylene diene monomer rubber, and combinations thereof which deforms elastically in response to changes in fluid pressure, wherein at least a first portion of said dampening membrane defines a top portion of the chamber in said body and at least a second portion of said dampening membrane is sealingly secured to said body ; a degassing membrane or a de-bubbling membrane comprising a second material selected respectively from the group consisting of: silicone rubber, polytetrafluoroethylene, fibrillated polymers, and combinations thereof, or from the group consisting of: polytetrafluoroethylene, TEFLON, fibrillated polypropylene, and combinations thereof, wherein at least a first portion of said degassing membrane or de-bubbling membrane defines a bottom portion of the chamber in said body and at least a second portion of said degassing membrane or de-bubbling membrane is sealingly secured to said body ; and a top cover defining a cavity in said body above said dampening membrane , wherein the cavity allows the dampening membrane to extend upwards in response to increased fluid pressure within the chamber . <EOS>