Series 8000 - On-Off Float Control Valves

• The OCV Series 8000 float control valves are designed to maintain a desired level in a tank or reservoir by opening for filling the tank when fluid is below the high level point and closing tightly when the desired level is reached.
• Model 8000 Float Valve (On/Off)

Features

• Operates automatically off line pressure.
• Heavy-duty, nylon-reinforced diaphragm.
• Rectangular-shaped, soft seat seal provides drip-tight Class VI closure.
• Diaphragm assembly Guided top and bottom.
• Throttling seat retainer for flow and pressure stability.
• Easily maintained without removal from the line.
• Replaceable seat ring.
• Alignment pins assure proper reassembly after maintenance.
• Valves are factory tested.
• Valves are serial numbered and registered to facilitate replacement parts and factory support.

BOTTOM FILL PILOT REMOTE MOUNTED

TOP FILL PILOT VALVE MOUNTED

Valve Operation

VALVES 1 1/4” – 6”

When the float is in the “down” position, the pilot port “C” is connected to the “E” port. This vents the diaphragm chamber of the main valve, allowing it to open. The tank fills through the valve until the desired high level is reached; i.e., the float reaches the “up” position. At this point, a connection is made in the pilot from “S” to “C” ports. This applies inlet pressure to the diaphragm chamber of the main valve, causing it to go fully closed.

VALVES 8” – LARGER

The description for the smaller 1-1/4″-6″ valves still applies except that the float pilot alternately vents or pressurizes the diaphragm chamber of the three-way auxiliary pilot. In relay fashion, the auxiliary pilot then vents or pressurizes the diaphragm chamber of the main valve.