Series L10 FLOTECT® Mini-Size Level Switch

Easy In-wall or External Installation, Specific Gravities as Low as 0.5

The SERIES L10 Flotect® Mini-Size Float Switches combine low cost with top quality materials and construction for great value and years of reliable liquid level control. Wide media compatibility is assured with a choice of brass or stainless steel bodies and external tees; polypropylene or SS floats. Two basic configurations are offered; with 1" NPT male threads for direct side mounting through a half coupling or with factory installed tee for external mounting.

All Series L10 controls feature a hermetically sealed, magnetically actuated SPST reed switch which is encapsulated in a polypropylene housing. Units are quickly and easily adjusted for your choice of normally open or normally closed operation thanks to a unique design. Just loosen two screws and instantly slide the switch assembly to the action required. N.O. and N.C. markings are clearly visible. This feature also speeds switch replacement if damage occurs.

Three types of floats are offered to accommodate liquids with specific gravities as low as 0.5; maximum pressures to 2000 psig (137.8 bar). Wire leads are 22 AWG X 18" (460 mm) and exit the switch assembly through 1/8" male NPT threads. These controls are UL recognized and CSA listed.

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Product Applications

  • Direct pump control for maintaining level
  • Level control
  • Automatic tank dump operations
  • Valve control

Models & Ordering

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Model Description Usually Ships Price Order
L10-B-3-A
Ships: Next Day
Price: $117.00
Mini-size level switch, 304 SS cylindrical float, side wall mounting, max. pressure 200 psig (13.8 bar), min. S.G. 0.5. Next Day $117.00 Order
L10-B-3-B
Ships: Next Day
Price: $123.00
Mini-size level switch, polypropylene spherical float, brass tee, max. pressure 250 psig (17.2 bar), min. S.G. 0.9. Next Day $123.00 Order
L10-B-3-C
Ships: Next Day
Price: $123.00
Mini-size level switch, 304 SS spherical float, side wall mounting, max. pressure 350 psig (24.1 bar), min. S.G. 0.7. Next Day $123.00 Order
L10-B-3-H
Ships: 1-2 Weeks
Price: $157.00
Mini-size level switch, 304 SS spherical float, brass tee, max. pressure 250 psig (17.2 bar), min. S.G. 0.7. 1-2 Weeks $157.00 Order
L10-B-3-O
Ships: Next Day
Price: $89.50
Mini-size level switch, polypropylene spherical float, side wall mounting, max. pressure 1000 psig (69 bar), min. S.G. 0.9. Next Day $89.50 Order

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Specifications

Service:
Compatible liquids.
Wetted Materials:
Float: Solid polypropylene or 304 SS; Body: Brass or 303 SS; Magnet: Ceramic; External float chamber (tee): None, brass, or 304 SS; Other: Lever arm, pin, spring, etc.: 301 SS, 302 SS, 316 SS.
Temperature Limit:
200°F (93°C).
Pressure Limit:
See chart on Catalog page.
Enclosure Rating:
Weatherproof, meets NEMA 4X (IP66).
Switch Type:
SPST hermetically sealed reed switch. Field adjustable for NO or NC.
Electrical Rating:
1.5 A @ 24 VDC resistive, 0.001 A @ 200 VDC resistive, 0.5 A @ 120 VAC.
Electrical Connection:
18 AWG, 19" (483 mm) long, PVC jacket. Rated 221°F (105°C).
Process Connection:
1" male NPT standard on models without external float chamber. Change 3 in model number to 4 for 1-1/4", to 5 for 1-1/2", or 6 for 2". 1" female NPT on models with external float chamber.
Mounting Orientation:
Horizontal with index arrow pointing down.
Specific Gravity:
See chart on Catalog page.
Switch Enclosure:
Nylon.
Weight:
Approximately 10 oz (0.283 kg) without external float chamber, 2.32 lb (1.05 kg) with external float chamber.
Agency Approvals:
CE, CSA, UR.

Features

  • Hermetically sealed, magnetically actuated SPST reed switch which is encapsulated in a polypropylene housing
  • Simple field switch adjustment allows user to toggle between normally open (NO) or normally closed (NC) with no change in the electrical connection
  • Switch is easily replaced without affecting process installation for quick and low cost maintenance
  • Combines low cost with top quality materials and construction for great value and years of reliable liquid level control

Model Chart

EXAMPLE L10 B 3 O ST Series L10-B-3-O-ST Flotect® Mini-Size Level Switch, brass upper housing, 1" male NPT, side wall mount, spherical polypropylene float, with stainless steel tag.
SERIES L10         Flotect® Mini-Size Level Switch
UPPER HOUSING
MATERIAL
  B
S
      Brass
Stainless Steel
PROCESS
CONNECTION
    3
4
5
6
7
8
9
10
    1" NPT
1-1/4" NPT
1-1/2" NPT
2" NPT
1" BSPT
1-1/4" BSPT
1-1/2" BSPT
2" BSPT
INSTALLATION/
FLOAT
      O
A
C
B
H
L
S
  Side Wall Mount/Polypropylene Spherical Float
Side Wall Mount/304SS Cylindrical Float
Side Wall Mount/304SS Spherical Float
Brass External Float Chamber/Polypropylene Spherical Float
Brass External Float Chamber/304SS Spherical Float
304SS External Float Chamber/304SS Spherical Float
304SS External Float Chamber/Polypropylene Spherical Float
OPTIONS         ST Stainless Steel Tag

Product Literature

Manuals

Catalog Pages

Approvals

Drawings

Questions

Question
Why is the minimum specific gravity important on the float level switches?
Answer
If a medium has a lower s.g. than the rated minimum for a float, the float will sink through the media and the switch will not operate.

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