Patent ID: 8613607

Claim:
A pulsation dampener for use on a medium in a flow system, the dampener comprising: a. an outlet half housing comprising a recess formed into a portion thereof and a shaft hole formed therethrough, wherein an outlet pipe extension having an outlet port is disposed on the outlet half housing; b. an inlet half housing configured to secure to the outlet half housing, wherein an inlet pipe extension having an inlet port is disposed on the inlet half housing, and wherein a flow path is formed between the inlet port and the outlet port when the outlet half housing is secured to the inlet half housing; c. a choke plate disposed in the recess and at least partially disposed within the flow path, wherein the choke plate comprises: (i) a centrally formed shaft hole; and (ii) a plurality of openings disposed about a perimeter of the choke plate; d. a shaft disposed through the outlet half housing for moving the choke plate to selectively present individual openings of the plurality of openings to the flow path; e. an indicator plate comprising a plurality of indicator openings corresponding to the plurality of openings in the choke plate; f. a stop pin disposed on the outlet half housing for preventing over-rotation of the indicator plate and the choke plate; and g. a removable fastener for engaging one of the plurality of indicator openings and securing to a portion of the outlet half housing.