Diaphragm-Sealed Valve with Improved Actuator Design

摘要

A valve comprising a valve cap, a valve body and a diaphragm positioned between the valve cap and the valve body. The valve further has a plurality of plungers movable, by an actuation system, between a closed position where the plunger engages the diaphragm, and an open position where the plunger is disengaged from the diaphragm. Each plunger comprises a base section connected to the actuation system and having a head projecting away therefrom; a top section extending between the base section and the diaphragm, the top section having a foot in contact with the head of the base section; and a biasing mechanism biasing the top section away from the diaphragm when the plunger is in the open position. Tangential contact points may also be provided between components of the actuation and the biasing mechanism for preventing a misalignment of the actuation system within the valve body.

主权项

1. A valve comprising:
a valve cap having a plurality of process conduits extending therethrough, each one of the plurality of process conduits ending in a process port at a valve cap interface; a valve body having a valve body interface facing the valve cap interface, the valve body having a plurality of plunger passages extending therein; a diaphragm positioned between the valve cap interface and the valve body interface, across the process ports; a plurality of plungers, each one of the plurality of plungers being positioned in a corresponding plunger passage of the plurality of plunger passages and being movable between a closed position where the plunger engages the diaphragm, and an open position where the plunger is disengaged from the diaphragm; and an actuation system for moving each one of the plurality of plungers between the closed position and the open position; wherein each one of the plurality of plungers comprises:
(i) a base section connected to the actuation system and having a head projecting away therefrom;(ii) a top section extending between the base section and the diaphragm, the top section having a foot in contact with the head of the base section; and(iii) a plunger biasing mechanism biasing the top section away from the diaphragm when the plunger is in the open position.