Patent ID: 8758687

Claim:
An automated assay apparatus for performing one or more assay procedures using a liquid reagent and a washer liquid, the apparatus comprises: a first reagent supply vessel adapted to be filled with the liquid reagent; a first reaction chamber; a first elastomeric conduit comprising, a first end in communication with said first reagent supply vessel, and a second end in communication with said first reaction chamber; and a valve chassis operable with said first elastomeric conduit to deliver said liquid reagent from said first reagent supply vessel to said first reaction chamber; said valve chassis comprises upper and lower flanges and left and right support flanges; said valve chassis further comprises a first valve having a vertical abutment extending between said lower and upper flanges of said valve chassis; said first valve further comprises a passageway formed in said upper and lower flanges of said valve chassis; said first elastomeric conduit extends thru said passageway; said first valve further comprises a spring having a first leg engaged with lug and a second leg having an end portion; said second leg of said spring is normally biased to pinch said first elastomeric conduit against said vertical abutment to close said first elastomeric conduit to prevent delivery of the liquid reagent to said first reaction chamber.