A pulse dampener comprising: a body having an elongated channel extending therethrough and having a first input port at a first end of the channel and a second output port at a second end of the channel, wherein the first input port is adapted for connecting to a source of fluid, and wherein the channel has a first opening to a dampening chamber and wherein the channel has a second opening to a second chamber, and wherein said body has a buffer chamber, wherein said buffer chamber is in fluid communication with the dampening chamber and the second chamber, and wherein said buffer chamber is in fluid communication with a second input port adapted for connection to a fluid source, and having a second output port in fluid communication with the second chamber; and at least one elastic membrane element adjacent to a portion of the fluid channel, wherein said at least one elastic membrane element has a first portion covering the first opening and a second portion covering the second opening; and wherein said first portion of said membrane element is adapted to initially expand into said dampening chamber and said second portion of said membrane element is adapted to expand into said second chamber when a fluid under pressure flows through the elongated channel, with said membrane element partially or wholly obstructing fluid communication between said buffer chamber and said dampening chamber and said second chamber, thereby increasing pressure in the buffer chamber when a pressurized fluid source is connected to the second input port and pushing said first portion of said membrane back to an equilibrium position in said dampening chamber, and pushing said second portion of said membrane back to an equilibrium position in said second chamber. a body having an elongated channel extending therethrough and having a first input port at a first end of the channel and a second output port at a second end of the channel, wherein the first input port is adapted for connecting to a source of fluid, and wherein the channel has a first opening to a dampening chamber and wherein the channel has a second opening to a second chamber, and wherein said body has a buffer chamber, wherein said buffer chamber is in fluid communication with the dampening chamber and the second chamber, and wherein said buffer chamber is in fluid communication with a second input port adapted for connection to a fluid source, and having a second output port in fluid communication with the second chamber; and at least one elastic membrane element adjacent to a portion of the fluid channel, wherein said at least one elastic membrane element has a first portion covering the first opening and a second portion covering the second opening; and wherein said first portion of said membrane element is adapted to initially expand into said dampening chamber and said second portion of said membrane element is adapted to expand into said second chamber when a fluid under pressure flows through the elongated channel, with said membrane element partially or wholly obstructing fluid communication between said buffer chamber and said dampening chamber and said second chamber, thereby increasing pressure in the buffer chamber when a pressurized fluid source is connected to the second input port and pushing said first portion of said membrane back to an equilibrium position in said dampening chamber, and pushing said second portion of said membrane back to an equilibrium position in said second chamber.