Patent ID: 7114522

Claim:
A dual valve block comprising: a first diaphragm valve and a second diaphragm valve, each diaphragm valve having a diaphragm and a chamber, the chamber comprising a seat port substantially coaxial with the diaphragm and a diaphragm port in a peripheral position in relation to the seat port; a first conduit for connecting the diaphragm port of the first diaphragm valve and the seat port of the second diaphragm valve to a first connector; a second conduit for connecting the seat port of the first diaphragm valve to a second connector; and a third conduit for connecting the diaphragm port of the second diaphragm valve to a third connector, wherein the diaphragm port of the of the first diaphragm valve is juxtaposed to and in direct flow communication with the seat port of the second diaphragm valve, and wherein flow through the dual valve block is prevented when either of the first or the second diaphragm valves is in a closed condition.