Small Size – Engineered Plastics
LS-7 Series–Compact Side Mounts
are the Solution to Many Small Tanks
These low-cost units are ideal for high volume use in small tanks and vessels.
Engineered plastics construction offers broad compatibility in water, oils andchemicals.

LEVEL SWITCHES – SINGLE POINT

Type 3
Internal Mounting

Type 5External Mounting

Polypropylene, Nylon or Versaplast™.

ZIP CORDLEADWIRES,
24˝
EXTENDED

Type 7External Mounting

Polypropylene, Nylon or Versaplast™.

3.84˝(97.5 mm)

4-1/4˝(108 mm)
5/8˝(16 mm)

ZIP CORD STYLE
24˝ LEADWIRESGASKET(WHITE BUNA NINCLUDED)

Polypropylene or Nylon;
conduit connection.

1/2˝ NPTLEADWIRES,24˝
EXTENDED

4-1/2˝(114 mm)

N.O.

N.C.

2-7/8˝(73 mm)

5/8˝-11
THREAD

5/8˝ (16 mm)
WRENCH FLAT
19/64˝(7.5 mm)

2-3/4˝(69.8 mm)

LOCKING NUT(NYLON)

5/8˝ HEX

Common Specifications
Lead Wire Gauge: No. 22 AWG
Mounting Attitude: Horizontal.
* See “Electrical Data” on Page X-5 formore information.

1/2˝ NPT

Approvals

Switch Rating*: SPST, 20VAMedia Compatibility
UL
NSFCSA ListedRecognized
cULListed
CE
File No.
File No.
RecognizedMat.
30200
E45168Std. 61

Material

2-7/8˝(73 mm)

Nylon

X

X

X

X

Polypropylene

X

X

X

X

Noryl®

X

X

X

Versaplast™

X

X

X

X
X

LS-7
Compatible Types

MediaOil, Fuel, Hydrocarbons

Nylon

Broad Range ofChemicals and Water

Polypropylene

Limited Chemicals and Water

Noryl®

Oil, Antifreeze, High
Temperatures, Corrosive
Fluids, Various Chemicals

Versaplast™

Switch Operation
Depending on the mounting position, the float on these switches can rise or lower with the liquidlevel. By rotating the switch 180°, the switch operation can be Normally Open or Normally Closed(except Type 12).
Types 3, 5, 7, 10 and 13
Normally OpenFLOAT ARCENVELOPE

When the switch is mounted
so that the float lowers withthe liquid level, the switch
is N.O.

A-6

FLOAT PIVOTS STAY ABOVE WATER

Type 12 – N.C. “Drop Float” Design
Normally
ClosedWhen the switch is mounted
so that the float rises withthe liquid level, the switch
is N.C.

MAGNET

WATERN.C. ACTUATION RANGE
25˝ to .50˝
45/64˝ REF.

The LS-7 Type 12 is ideal for use on food warmers,
hot water heaters, steam cookers, small boilers or
wherever water evaporation occurs. The switch isused effectively for either high fluid level alarms orwater make up systems. The units are made of Noryl®,which carries NSF approval for use in potable water,
and are supplied with FDA-approved Buna gaskets.

Visit www.GemsSensors.com for most current information.

FoodWarmer

FLOAT TYPE

 Nylon is ideal for oils and fuels.
 NSF Standard 61 polypropylene is ideal for potable water and broad chemicals.

Type 10External Mounting

Type 12Internal Mounting

Externally mounts through and seals non-threadedholes using a HNBR compression gasket.

Side mount “Drop Down” design for calcifying hot
water applications. NSF compliant Noryl®.

4.093˝
(104 mm)

ZIP CORDLEADWIRES
24˝
EXTENDED

BUNA
GASKET
11/16˝ DIA.
(18 mm)3-51/64˝(94 mm)

1-1/8˝(29 mm)

N.C.

.85˝ DIA.
(21.6 mm)

N.O.
N.C.

1/2˝ WRENCH FLATS

5/8˝-11
THREAD.10˝(2.5 mm).33˝(8.4 mm)

Polypropylene or Nylon.

N.O.

1.48˝(37.6 mm).90˝(23 mm)

Type 13Internal Mounting

3-59/64˝ REF.
(100 mm)

ZIP CORD
LEAD WIRES
24˝ - 26˝
EXTENDED

3.85˝(97.8 mm)

9/16˝-24 THD.
JAM NUT (NYLON)LOCKINGNUTGASKET, HNBR (FDA Compliant)

LEVEL SWITCHES – SINGLE POINT

 Versaplast™ is ideal for corrosive fluids, hot water, antifreeze, chemicals and oils.

1-5/64˝(27 mm)

NUT, 5/8˝-11Note: Recommended hole size =7/8˝ dia. x 1/32˝ - 5/32˝ thick panel.

2-43/64˝(69 mm)GASKET (BUNA 'N')

2-23/32˝ REF.
(69 mm)How To Order – Select Part Number based on specifications required.
Mounting
Type355 - BSP
710Materials*
Stem andMounting

Float

Lead Wire
JacketNylon
Polypropylene
Versaplast™
Polypropylene
Nylon
Versaplast™

Teflon®

Versaplast™

Teflon.65.55.80.55

TPE†
TPE

†

Polypropylene

TPE†

Nylon
Polypropylene
Nylon

TPE†

Min.
LiquidSp. Gr.

®

.65.80Operating Temperature-40°F to +250°F (-40°C to +121.1°C)-40°F to +225°F (-40°C to +107.2°C)-40°F to +250°F (-40°C to +121.1°C)-40°F to +225°F (-40°C to +107.2°C)-40°F to +250°F (-40°C to +121.1°C)-40°F to +300°F (-40°C to +148.9°C).80-40°F to +250°F (-40°C to +121.1°C)

.55

.65

-40°F to +225°F (-40°C to +107.2°C)-40°F to +250°F (-40°C to +121.1°C)-40°F to +225°F (-40°C to +107.2°C)-40°F to +250°F (-40°C to +121.1°C)

.65
.55

OperatingPressure, Max.

Float
Arc
Envelope

100 psi @ 70°F
(6.8 bar @ 20°C)

2.20

100 psi @ 70°F
(6.8 bar @ 20°C)

1.25

100 psi @ 70°F
(6.8 bar @ 20°C)

1.25

189422100 psi @ 70°F
(6.8 bar @ 20°C)

1.50

16045016046050 psi @ 70°F
(3.4 bar @ 20°C)

2.08165800165900

PartNumber
16557016452018260013110014062017710012Noryl®

TPE†

.80

-40°F to +225°F (-40°C to +107.2°C)

100 psi @ 70°F
(6.8 bar @ 20°C).70

19108013Polypropylene

TPE†

.55

-40°F to +225°F (-40°C to +107.2°C)

100 psi @ 70°F
(6.8 bar @ 20°C)

2.20197050* Polysulfone and Ryton® R-4 are available upon request.
† Thermoplastic Elastomer Zip Cord, 22 AWG.
Note: NSF C2 Versions available. Contact factory.

See alloy versions on next page.

– Stock Items.

Visit www.GemsSensors.com for most current information.

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