Starting at $862.20USD
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Dwyer

L4 Flotect Float Switch

Perfect for starting or stopping pumps, opening or closing valves, or actuating level alarm signals

Starting at
$862.20USD
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Used in
L4 Flotect Float Switch 05109
L4 Flotect Float Switch 80183

Rugged and reliable the Series L4 Flotect® Float Switch operates automatically to indicate tank level. Perfect for starting or stopping pumps, opening or closing valves, or actuating level alarm signals. A unique magnetically actuated switching design gives superior performance. There are no bellows, springs, or seals to fail. Instead, the free-swinging float attracts a magnet within the solid metal switch body, actuating a snap switch by means of a simple lever arm. Float arm hinge design limits the arm angle to prevent vertical hang up.

• Superior performance due to unique magnetically-actuated switching design
• Long product life with no bellows, springs, or seals to fail
• Avoids clogs using a free-swinging float that attracts a magnet within the solid metal switch body, actuating a snap switch by means of a simple lever arm
• Prevents vertical hang up with float arm hinge design that limits the arm angle
ServiceLiquids compatible with wetted materials
Wetted MaterialsFloat and Rod: 316 SS;
Body: Brass or 316 SS standard;
Magnet Keeper: 430 SS standard, 316 SS or nickel optional.
Temperature Limits4°F - 275°F (-20°C - 135°C) standard, MT high temperature option 400°F (205°C) (MT option not UL, CSA, ATEX or IECEx).
ATEX and IECEx options:
Ambient temperature -4°F - 163°F (-20°C - 73°C);
Process temperature -4°F - 163°F (-20°C - 73°C)
Pressure LimitBrass body 1000 PSIG (69 Bar), 316 SS body 2000 PSIG (138 Bar). Standard float rated 100 PSIG (6.9 Bar). For other floats, see options
Enclosure RatingWeatherproof and Explosion-proof. See Data Sheet for full rating.
Switch TypeSPDT snap switch standard, DPDT snap switch optional
Electrical RatingUL, FM, ATEX and IECEx models: 10 A @ 125/250 VAC (V~).
CSA models: 5 A @ 125/250 VAC (V~); 5 A res., 3 A ind. @ 30 VDC.
MV option: 1 A @ 125 VAC (V~); 1 A res., .5 A ind. @ 30 VDC.
MT option: 5 A @ 125/250 VAC (V~). (MT and MV option not UL, CSA, FM, ATEX or IECEx)
Electrical ConnectionUL and CSA models: 16 AWG, 6" (152 mm) long. ATEX and IECEx units: terminal block
Conduit Connection3/4 in (19.05 mm) female NPT standard or M25 with -BSPT option
Process Connection1-1/2 in (38.10 mm) male NPT or 1-1/2 in (38.10 mm) male BSPT standard,
2-1/2 in (63.50 mm) male NPT or 2-1/2 in (63.50 mm) male BSPT standard optional floats
Mounting OrientationHorizontal installation standard, optional vertical top mount
Deadband3/4 in (19 mm) for standard float
Specific Gravity0.7 minimum with standard float. For other floats see Options/Accessories page
Weight4 lb 9 oz (2.07 kg)
Agency ApprovalsATEX, CE, CSA, FM, IECEx, UL**
**No Housing Option (-NH) has no approvals

• Direct pump control for maintaining level
• Automatic tank dump operations
• Control levels or provide alarms in sumps, scrubber systems, hydro-pneumatic tanks, low pressure boilers, and various water/wastewater treatment processes
• Level control
• Valve control

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