Patent ID: 6325105
Filing Date: 2001-12-04
Classification: F04B,F16L

Abstract:
A surge suppression apparatus including: a diaphragm, a chamber divided into first and second sub-chambers by the diaphragm, a diaphragm follower being movable in response to the movement of the diaphragm as a result of a pressure differential between the first and second sub-chambers, a first valve with a movable element, and a second valve with a movable element, the diaphragm follower being movable relative to a wall of the chamber and being the movable element of the first valve for determining the existence or otherwise of a communication pathway between the second sub-chamber and a gas inlet and being the movable element of the second valve for determining the existence or otherwise of a communication pathway between the second sub-chamber and a gas outlet, wherein said diaphragm follower is biased to contact the diaphragm at all times by a loading derived from gas pressure in the second sub-chamber.