Small Size - Alloys
LS-7 SeriesCompact Alloy and Alloy/Plastics Side Mounts
LEVEL SWITCHES – SINGLE POINT

Built for durability, our LS-7 Series switches utilize stainless steel, or zincbodies. Ideal for any small tank or vessel destined for a rugged environment.
All-stainless steel material of construction of Types 9 and 11 is generally
recognized as safe with FDA for food contact regulations.

Common Specifications
Switch Rating*: SPST, 20VA
Lead Wire: 22 AWG, 24˝-27˝ ExtendedMounting Attitude: Horizontal.
RoHS: In compliance with EU-directive 2011/65/EC requirements for chemicals and substances.
*See “Electrical Data” on Page X-5 for more information.

LEAD WIRESRo H SGEM

1.40˝(36 mm) REF.

®

S COMPLIAN

TRo H SGEM®

S COMPLI

ANT

3.38˝
(86 mm) REF.

Type 6External Mounting

Zinc alloy body with polypropylene or nylon float.
SAE Mounting.

7/8˝-14UNF THD

7/8˝-14 JAM NUT

11/16˝(17 mm) REF.

3-29/32˝ REF.
(99.2 mm)

GEM

®

S CO

MPLI

AN

1-1/32˝ REF.
(26.2 mm)

5/16˝ REF.
(8 mm)Ro H ST

Ro H SGEM®

S COMPLI

ANTLEAD WIRESType 8External Mounting

1.00˝HEXZinc alloy body with nylon
or polypropylene float.

1/2˝ NPTFLOAT ASSY.
SS - 4.71˝ (119.6 mm)
PLASTIC - 3.86˝ (98.0 mm)
0.31˝(7.9 mm)

Ro H SGEM

1.21˝(30.7 mm)

FLOAT ASSY.
SS - 3.19˝ (81.0 mm)
PLASTIC - 2.34˝ (59.4 mm)

®

S CO

MPLI

ANT

Ro H S
GEM

®

S CO

MPLI

ANTN.C.

LEAD WIRES

316 Stainless Steel body with 316 SS, nylon
or polypropylene float.

1/2˝ NPT
1˝ HEXFLOAT ASSY.
SS - 0.663˝ (16.8 mm)
PLASTIC - 0.687˝ (17.5 mm)

FLOAT ASSY.
SS - 5.31˝ (134.9 mm)
PLASTIC - 4.46˝ (113.3 mm)
Ro H SGEM

1.01˝
1.11˝(25.7 mm) (28.2 mm)®

S COMPLIANTRo H S
GEM

®

S CO

MPLI

AN

T

Type 9External Mounting

316 Stainless Steel body with 316 SS, nylon
or polypropylene float.

Ro H S
GEM

MPLI

AN

5/8˝ FLATS

1/2˝ NPT.83 REF.
(21 mm)LEAD WIRES

®

S CO

LEAD WIREST

FLOAT ASSY.
SS - 3.19˝ (81.0 mm)
PLASTIC - 2.34˝ (59.4 mm)

FLOAT ASSY.
SS - 0.663˝ (16.8 mm)
PLASTIC - 0.687˝ (17.5 mm)

4-9/16˝ REF.
(116 mm)

Ro H SGEM®

S COMPLIAN

T

Type 11Internal Mounting

316 Stainless Steel body with
316 S.S. float.
A-8

5/8˝ (16 mm)-11 JAM NUT
WITH VITON® GASKET

5/8˝ (16 mm)
DIA. REF.

5/8˝ (16 mm)-11 THD

Visit www.GemsSensors.com for most current information.

LS-7 Series / p3of4 / 2020-09-28

FLOAT TYPE
Depending on the mounting position, the float on these switches can either rise or lower withthe liquid level. By rotating the switch 180°, the switch operation can be Normally Open or
Normally Closed.

Normally OpenFLOAT ARCENVELOPE

26°

How To Order – Select Part Number based on specifications required.
Mounting
Type6

Materials
Stem andMounting
Zinc
Alloy*Float
Nylon
Polypropylene

Lead Wire
JacketTPE†

316 S.S.
Zinc
Alloy*
316
Stainless
Steel

11

TPE

Polypropylene

89Nylon†316
Stainless
Steel

When the switch is mounted sothat the float lowers with the liquidlevel, the switch is N.O.

NormallyClosed26°

When the switch is mounted sothat the float rises with the liquid
level, the switch is N.C.

Min.
LiquidSp. Gr.

Operating Temperature

OperatingPressure, Max.

Float Arc
EnvelopePart
Number.65-40°F to +250°F (-40°C to +121°C)

100 psi @ 70°F

1.36155660.75-40°F to +225°F (-40°C to +107°C)

100 psi @ 70°F

1.36179870.80-40°F to +250°F (-40°C to +121°C)

300 psi @ 70°F

1.43249315.65-40°F to +250°F (-40°C to +121°C)

100 psi @ 70°F

1.40160950.55-40°F to +225°F (-40°C to +107°C)

100 psi @ 70°F

1.40162795.80-40°F to +250°F (-40°C to +121°C)

300 psi @ 70°F

1.43249315.65-40°F to +250°F (-40°C to +121°C)

100 psi @ 70°F

1.40247390

Polypropylene.55-40°F to +225°F (-40°C to +107°C)

100 psi @ 70°F

1.40247380

316 S.S.

.80-40°F to +250°F (-40°C to +121°C)

300 psi @ 70°F

1.43

164870316 S.S.
Nylon

Nylon

TPE†

TPE

†

Polypropylene

316 Stainless Steel

Teflon®

.65-40°F to +250°F (-40°C to +121°C)

100 psi @ 70°F

1.40

164850.55-40°F to +225°F (-40°C to +107°C)

100 psi @ 70°F

1.40

164860.80-40°F to +250°F (-40°C to +121°C)

300 psi @ 70°F

1.65

179445LEVEL SWITCHES – SINGLE POINT

Switch Operation†Thermoplastic Elastomer Zip Cord.
– Stock Items.

*Zinc Alloy Material Note:
When mounted in certain cathodic metals, including stainless steel, and used in waterbased liquids, galvanic corrosion may occur. Consult factory for information.

LS-7 Series / p4of4 / 2020-09-28

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