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PRESSURE RELIEF
PORT OPEN TO
ATMOSPHERE
THROUGH VALVE
DOWNSTREAM
PORT
PILOT VALVE
SEAT CLOSED
WATER SUPPLY PRESSURE
TO DIAPHRAGM CHAMBER
VALVE WATERWAY CLOSED
BY SEATED DIAPHRAGM
OPEN TO
ATMOSPHERE
DOWNSTREAM PRESSURE RELIEF
PRESSURE
RELIEF PORT
WATERFLOW TO
PRV-1A VALVE
DOWNSTREAM
PORT
PILOT VALVE
SEAT OPEN
DIAPHRAGM RETRACTS
OPENING VALVE WATERWAY
PRESSURE RELIEF
WATERFLOW
PRESSURE RELIEF WATERFLOW FROM PILOT
VALVE TO PRV-1A VALVE DOWNSTREAM PORT
PORT OPEN TO ATMOSPHERE
OPERATED CONDITION
MODELO RV-1 A FUNCIONAMIENTO DELa VÁLVULA
DE ALIVIO DE PRESIÓN
WATER SUPPLY
WATER SUPPLY
PRESSURE
PRESSURE
GAUGE PORT
FROM RV-1A VALVE
UPSTREAM PORT
UPSTREAM WATER SUPPLY PORT TO
PILOT VALVE AND DIAPHRAGM CHAMBER
SET CONDITION
PILOT VALVE
WATER SUPPLY
RESTRICTION
OVER-PRESSURE
*
ORIFICE
FROM RV-1A VALVE
UPSTREAM PORT
UPSTREAM WATER SUPPLY PORT
OVER-PRESSURE TO PILOT VALVE
FIGURA 3
WATER SUPPLY
PRESSURE
FORCE OF SPRING
TENSION GREATER
THAN FORCE OF WATER
SUPPLY PRESSURE
DIAPHRAGM
CHAMBER
SET PRESSURE
FROM WATER SUPPLY
*
SHOWN 90°
OUT OF POSITION
FOR DETAIL
WATER SUPPLY
OVER-PRESSURE
FORCE OF WATER
SUPPLY PRESSURE
GREATER THAN FORCE
OF SPRING TENSION
RV-1A VALVE
WATERWAY
OVER-PRESSURE
WATERFLOW
FROM WATER SUPPLY
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