Magnetic float level switch B40 series
displacerfor liquidscarbon steel

magnetic float level switch
magnetic float level switch
magnetic float level switch
magnetic float level switch
magnetic float level switch
magnetic float level switch
magnetic float level switch
magnetic float level switch
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Characteristics

Technology
magnetic float, displacer
Medium
for liquids
Material
stainless steel, aluminum, carbon steel
Other characteristics
rugged, ATEX
Process pressure

228 bar (3,306.86 psi)

Process temperature

538 °C (1,000 °F)

Description

The B40 external cage type level switch is a float-actuated control specifically designed and constructed for high pressure, high temperature service conditions such as boilers. It is available in rugged industrial or ASME B31.1 construction. A permanent magnet is attached to a pivoted switch actuator. As the float/displacer rises following the liquid level, it raises the attraction sleeve into the field of the magnet, which then snaps against the non-magnetic enclosing tube, actuating the switch. The enclosing tube provides a static pressure boundary between the switch mechanism and the process. On a falling level, the float/displacer deactivates the switch. Choices of chamber materials include carbon steel, stainless steel and chrome-moly 300 series stainless steel float Choice of switch mechanism: ◦ Dry contact ◦ Hermetically sealed Minimum specific gravity 0.65 Choice of switch mechanism enclosure: ◦ TYPE 4X polymer coated steel ◦ TYPE 4X/7/9 Class I, Div. 1, Groups B, C & D, polymer coated aluminum or cast iron Choice of tank connection: ◦ 1" welding nipples ◦ 1" or 1½" socket welds OPTIONS ATEX housing Flanged connections Temperature extensions Low specific gravity As the counter weighted float follows liquid level changes, a magnetic sleeve is moved into or out of the field of a switch-actuating magnet causing switch operation. A non-magnetic barrier tube isolates the switch mechanism from the controlled liquid.

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Level control

*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.