F10-1D22-BKB datasheet(2/12 Pages) MAGNETROL

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Magnet

Return

Spring

Pivot

T E C H N O L O G Y

M o d e l F 1 0

Flow through the horizontal pipeline causes the pivoted

vane assembly to swing in the direction of the flow. The

vane assembly lifts an attraction sleeve which in turn

causes the magnet to pull in and actuate the switch.

The O-ring sealed adjusting screw in the top of the

enclosing tube compresses the range spring located

above the attraction sleeve. Turning the adjusting screw

clockwise increases the flow rate at which the switch

actuates. Adjustments can be made while the flow switch

is in service.

Actuating

vane

Adjusting

screw

Magnetic

sleeve

Swing out

position

Return

spring

Pivot

The rate of flow through the valve body raises or lowers

the disc. This in turn raises or lowers the magnetic sleeve

within its sealed non-magnetic enclosing tube. On an

increasing flow rate, the magnetic sleeve rises into the

field of the permanent magnet, located outside the

enclosing tube, actuating the attached switch mechanism.

When the flow rate drops below the rate for which the

flow disc is calibrated, a reversal of this action occurs.

Enclosing

tube

(non-magnetic)

Swing in

position

Sleeve

(magnetic)

Magnet

Flow disc

Position with actuating flow present

Return

Spring

Pivot

Switch mechanism

Swing out

position

Return

spring

Pivot

No-flow position

M o d e l F 5 0

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