Patent ID: 8469057

Claim:
A valve comprising: a valve cap comprising a plurality of process conduits extending therethrough, each of the process conduits ending in a process port; a valve body facing the valve cap, the valve body comprising a plurality of plunger passages extending therein; a diaphragm positioned across the process ports and between the valve cap and the valve body; a plunger assembly comprising: a plurality of plungers, each of the plungers being positioned in a respective one of the plunger passages and slideable therein between a closed position wherein the plunger deforms the diaphragm in order to block communication between two of the process ports and an open position wherein the plunger is retracted away from the diaphragm, each of the plungers being either a normally closed plunger or a normally open plunger; a first support structure upon which the normally closed plungers are mounted; and a second support structure upon which the normally open plungers are mounted; a biasing mechanism for biasing the normally closed plungers towards the diaphragm and biasing the normally open plungers away from the diaphragm; and a locking mechanism for engaging the first support structure and thereby physically restrain the normally closed plungers in the open position.