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.

APPLICATIONS

• 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 wastewater/sewage treatment processes

SPECIFICATIONS
Service: Liquids compatible with wetted materials.
Wetted Materials:
  Float and Rod: 316SS.
  Body: Brass or 316SS standard.
  Magnet Keeper: 430SS standard, 316SS or Nickel optional.
Temperature Limits: 4 to 275°F (-20 to 135°C) standard. MT high temperature option 400°F (205°C), (MT option not UL, CSA, ATEX or SAA).
Pressure Limit: Brass body 1000 psig (69 bar), 316SS body 2000 psig (138 bar). Standard float rated 100 psig (6.9 bar). For other floats see options on "Options/Accessories" page.
Enclosure Rating: Weatherproof and explosion-proof. Listed with UL and CSA for Class I, Groups C and D; Class II, Groups E, F, and G. ATEX 0344 II 2 G EEx d IIB T6 -20°C=Tamb=75°C, EC-Type Certificate No: KEMA 03 ATEX 2383. SAA: Exd II C T6 (T amb=60°C). IP66 C1 I, Zone I. Also FM approved.
Switch Type: SPDT snap switch standard, DPDT snap switch optional.
Electrical Rating: UL, FM, ATEX and SAA models: 10A @ 125/250 VAC. CSA models: 5A @ 125/250 VAC; 5A res., 3A ind. @ 30 VDC. MV option: 1A @ 125 VAC; 1A res., .5A ind. @ 30 VDC. MT option: 5A @ 125/250 VAC. (MT and MV options not UL, CSA, FM, ATEX or SAA.).
Electrical Connection: UL and CSA models: 16 AWG, 6" (152 mm) long. ATEX and SAA units: terminal block.
Process Connection: 1-1/2" male NPT standard, 2-1/2" male NPT required for optional floats.
Mounting Orientation: Horizontal installation standard, optional vertical top mount.
Weight: 4 lb 9 oz (2.07 kg).
Dead Band: 3/4" (19 mm) for standard float.
Specific Gravity: 0.7 minimum with standard float. For other floats see options on "Options/Accessories" page.
Agency Approvals: UL, CSA, FM, CE and ATEX.

OPTIONS -- Consult Factory for Pricing

-D DPDT Contacts.
-MV Gold Plated Contact option for dry circuits. (See electrical rating on "Specifications" page, no listings or approvals).
-MT High Temperature option rated 400°F (204°C). (See electrical rating on "Specifications" page, no listings or approvals).
-TRI Time Delay Relay option for increasing flow with 2 SPDT contacts, adjustable from 0-1 to 0-31 minutes. (No listings or approvals.)
-TRD Time Delay Relay option for decreasing flow with 2 SPDT contacts, adjustable from 0-1 to 0-31 minutes. (No listings or approvals.)
-316 316SS Magnet Keeper option to replace standard 430SS.
-AT ATEX approved construction.
-SAA SAA approved construction.
-TOP Top Mounted option for vertical flange installation (distance from flange face to centerline of float to be specified, 20" [508 mm] maximum).

OPTIONAL FLOATS (all 2-1/2" spherical):
-50 304SS Float rated 50 psig (3.5 bar) and 0.5 min. s.g. (2-1/2" spherical).
-150 316SS Float rated 150 psig (10.3 bar) and 0.7 min. s.g. (2-1/2" spherical).
-300 304SS Float rated 300 psig (20.7 bar) and 0.7 min. s.g. (2-1/2" spherical).

NOTE: Consult factory for price and availability of fittings for L4 installation. Thredolets, bushings, and flanges are available in a variety of sizes and materials.

FEATURES