Valve construction of the o-ring poppet type

Claim 1

A VALVE COMPRISING A BODY MEMBER HAVING A CLOSED CYLINDRICAL BORE THEREIN, SAID BORE DIVIDED INTO TWO CYLINDRICAL SECTIONS OF DIFFERENT DIAMETER, AN ANNULAR BEVELED VALVE SEAT CONNECTING THE TWO DIFFERENT DIAMETER SECTIONS, AN INLET PORT CONNECTED TO THE SMALLER DIAMETER SECTION AND AN OUTLET PORT CONNECTED TO THE LARGER DIAMETER SECTION, A RECIPROCABLE VALVE MOUNTED IN THE LARGER DIAMETER CYLINDRICAL SECTION, SAID VALVE COMPRISED OF A STEM AND A VALVE HEAD, SAID VALVE HEAD HAVING AN ANNULAR FACE OF A SIZE TO ABUT WITH AND CO-ACT WITH SAID VALVE SEAT, SAID VALVE HEAD COMPRISED OF A CENTRAL SECTION PROVIDED WITH A PLURALITY OF SIDES AND A SURROUNDING RING SECTION AND PROVIDED WITH SMALL APERTURES BETWEEN THE CENTRAL AND RING SECTIONS, SAID CENTRAL SECTION PROVIDED WITH AN EXTENDED PORTION HAVING A RECESS TO SUPPORT A SEALING RING ADJACENT TO AND IN FRONT OF SAID ANNULAR VALVE FACE, AN O-TYPE SEALING RING OF RESILIENT MATERIAL MOUNTED IN SAID RECESS, SAID SEALING RING BEING DIMENSIONED TO BE NORMALLY COMPRESSED BETWEEN THE ANNULAR FACE OF SAID VALVE AND THE BEVELED VALVE SEAT WHEN THE VALVE IS CLOSED TO ESTABLISH A SEAL BETWEEN SAID DIFFERENT DIAMETER BORE SECTIONS, SAID O-TYPE SEALING RING RIDING IN SAID VALVE RECESS DURING THE RECIPROCATING MOVEMENT OF SAID VALVE, SAID O-TYPE SEALING RING POSITIONED IN SAID RECESS TO BE ADJACENT TO BUT NOT SEALING SAID SMALL APERTURES THROUGH SAID VALVE HEAD WHEN SAID VALVE IS IN AN OPEN POSITION AND SAID O-TYPE SEALING RING MOVING WHEN COMPRESSED INTO A SEALING RELATION WITH ALL OF THE SMALL APERTURES IN SAID VALVE HEAD.