Fluid transfer valve structure

Abstract

Abstract A TRANSFER VALVE CONSTRUCTION FOR A DILUTING SYSTEM WHICH AUTOMATICALLY PRODUCE ONE OR MORE SAMPLE DILUTIONS OF PREDETERMINED CONCENTRATION FROM A FIRST FLUID SPECIMEN, WHILE ADAPTED TO SIMULTANEOUSLY COMMENCE DILUTION OF A SECOND FLUID SPECIMEN BEFORE THE DESIRED DILUTIONS OF SAID FIRST SPECIMEN ARE COMPLETED. THE VALVE INCLUDING A PLURALITY OF MEMBERS ENGAGED IN FACE-TO-FACE CONTRACT, ONE OF WHICH IS MOVEABLE RELATIVE TO THE REMAINDER OF THE VALVE STRUCTURE AND CAPABLE OF BEING INDEXED BETWEEN A FIRST AND A SECOND POSITION. SAID VALVE HAVING A FIRST AND SECOND PORTION FOR RECEIVING FLUID SAMPLES, SUCH THAT WHEN SAID MOVABLE MEMBER IS INDEXED A PRECISE AMOUNT OF SAID SAMPLE IS ISOLATED AND POSITIONED FOR COMBINING WITH A PREDETERMINED VOLUME OF DITUENT TO PREDUCE THE REQUISTE DILUTIONS. THE VALVE OF THE PRESENT INVENTION HAVING FLUID OPERATED MEANS FOR BIASING THE VALVE MEMBERS INTO TIGHT SEALING ENGAGEMENT UPON THE INTRODUCTION OF THE LIQUID SPECIMENS AND THE DILUENT INTO SAID VALVE BUT BEING DEENERGIZED TO RELAX SAID TIGHT ENGAGEMENT DURING RELATIVE MOVEMENTS OF THE VALVE MEMBERS TO PROLONG THE WORK LIFE SPAN OF SAID VALVE.

Inventors

• 👤 Wallace H Coulter
• 👤 William F Rothermel

Bibliographic Details