Electromagnetic multiport valve

Claim 1

A SAMPLE COLLECTING DEVICE COMPRISING A DIAPHRAGM SAMPLE VALVED TO COLLECT A FLUID SAMPLE, AND APPARATUS TO OPERATE SAID SAMPLE VALVE ACCORDING TO A PREDETERMINED TIME CYCLE COMPRISING A SPRING-BIASED, SOLENOID-OPERATED, PISTON-ACTUATED PILOT VALVE COMPRISING A VALVE BODY HAVING A PAIR OF BORES EXTENDING PARTLY THERETHROUGH AND HAVING A PISTON OPERATIVELY POSITIONED IN EACH BORE; AN INLET PORT IN SAID VALVE BODY OPERATIVELY CONNECTED TO SAID STREAM OF CARRIER GAS AND TO AN INLET AT THE TERMINUS OF EACH BORE; A PAIR OF PORTS IN SAID VALVE BODY EACH OF WHICH IS CONNECTED TO A SIDE OF SAID DIAPHRAGM VALVE AND TO A SEPARATE BORE IN SAID VALVE BODY; AN EXHAUST PORT IN SAID VALVE BODY CONNECTED BY A PASSAGEWAY TO EACH OF SAID BORES; A PAIR OF O-RINGS IN EACH BORE POSITIONED SO AS TO BE AXIALLY AND ALTERNATELY COMPRESSED BY SAID PISTON TO CLOSE THE INLET AT THE TERMINUS OF A FIRST BORE, TO OPEN THE INLET AT THE TERMINUS OF THE SECOND BORE SO AS TO PASS CARRIER GAS TO THE SECOND SIDE OF THE DIAPHRAGM VALVE, TO OPEN THE PORT CONNECTED TO A FIRST SIDE OF THE DIAPHRAGM VALVE AND TO THE FIRST BORE SO AS TO CONNECT SAID PORT AND DIAPHRAGM VALVE TO SAID EXHAUST PORT IN SAID VALVE BODY WHEN SAID VALVE IS IN A FIRST POSITION AND TO OPEN THE INLET AT THE TERMINUS OF THE FIRST POSITION AND TO PASS CARRIER GAS TO THE FIRST SIDE OF THE DIAPHRAGM VALVE, TO CLOSE THE INLET AT THE TERMINUS OF THE SECOND BORE, TO OPEN THE PORT CONNECTED TO THE SECOND SIDE OF THE DIAPHRAGM VALVE AND TO THE SECOND BORE SO AS TO CONNECT THE PORT CONNECTED WITH THE SECOND SIDE OF THE DIAPHRAGM VALVE WITH SAID EXHAUST PORT; AND MEANS TO OPERATE SAID SOLENOID ACCORDING TO THE PREDETERMINED TIME CYCLE.