A-6 Visit www.GemsSensors.com for most current information.
LEVEL SWITCHES – SINGLE POINT
Type 3
Internal Mounting
Type 5
External Mounting
Type 7
External Mounting
Type 10
External Mounting
Type 12
Internal Mounting
Type 13
Internal Mounting
Polypropylene, Nylon or Versaplast™. Polypropylene, Nylon or Versaplast™. Polypropylene or Nylon;
conduit connection.
Externally mounts through and seals non-threaded
holes using a HNBR compression gasket.
Side mount “Drop Down” design for calcifying hot
water applications. NSF compliant Noryl®.
Polypropylene or Nylon.
Note: Recommended hole size =
7/8˝ dia. x 1/32˝ - 5/32˝ thick panel.
Media Compatibility
Media LS-7
Compatible Types
Oil, Fuel, Hydrocarbons Nylon
Broad Range of
Chemicals and Water Polypropylene
Limited Chemicals and Water Noryl®
Oil, Antifreeze, High
Temperatures, Corrosive
Fluids, Various Chemicals
Versaplast™
ZIP CORD
LEADWIRES,
24˝
EXTENDED
5/8˝ -11
THREAD
2-3/4˝
(69.8 mm)
LOCKING NUT
(NYLON)
3.84˝
(97.5 mm)
GASKET
(WHITE BUNA N
INCLUDED)
ZIP CORD STYLE
24˝ LEADWIRES
5/8˝ HEX 1/2˝ NPT
2-7/8˝
(73 mm)
5/8˝
(16 mm)
4-1/4˝
(108 mm)
N.O.
N.C.
LEAD
WIRES,
24˝
EXTENDED
1/2˝ NPT
5/8˝ (16 mm)
WRENCH FLAT
19/64˝
(7.5 mm)
2-7/8˝
(73 mm)
4-1/2˝
(114 mm)
N.C. ACTUATION RANGE
25˝ to .50˝
MAGNET
45/64˝ REF.
WATER
FLOAT PIVOTS STAY ABOVE WATER
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 and
chemicals.
Common Specifications
Switch Rating*: SPST, 20VA
Lead Wire Gauge: No. 22 AWG
Mounting Attitude: Horizontal.
* See “Electrical Data” on Page X-5 for
more information.
Approvals
Material CE
UL
Recognized
File No.
E45168
cUL
Recognized
CSA Listed-
File No.
30200
NSF
Listed
Mat.
Std. 61
Nylon X X X X
Polypropylene X X X X X
Noryl®X X X X
Versaplast™ X X X
Food
Warmer
Switch Operation
Depending on the mounting position, the float on these switches can rise or lower with the liquid
level. By rotating the switch 180°, the switch operation can be Normally Open or Normally Closed
(except Type 12).
Normally Open
FLOAT ARC
ENVELOPE Normally
Closed
When the switch is mounted
so that the float lowers with
the liquid level, the switch
is N.O.
When the switch is mounted
so that the float rises with
the liquid level, the switch
is N.C.
Types 3, 5, 7, 10 and 13 Type 12 – N.C. “Drop Float” Design
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 is
used effectively for either high fluid level alarms or
water 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.
A-7
Visit www.GemsSensors.com for most current information.
LEVEL SWITCHES – SINGLE POINT
Type 3
Internal Mounting
Type 5
External Mounting
Type 7
External Mounting
Type 10
External Mounting
Type 12
Internal Mounting
Type 13
Internal Mounting
Polypropylene, Nylon or Versaplast™. Polypropylene, Nylon or Versaplast™. Polypropylene or Nylon;
conduit connection.
Externally mounts through and seals non-threaded
holes using a HNBR compression gasket.
Side mount “Drop Down” design for calcifying hot
water applications. NSF compliant Noryl®.
Polypropylene or Nylon.
Note: Recommended hole size =
7/8˝ dia. x 1/32˝ - 5/32˝ thick panel.
Mounting
Type
Materials* Min.
Liquid
Sp. Gr.
Operating Temperature Operating
Pressure, Max.
Float
Arc
Envelope
Part
Number
Stem and
Mounting Float Lead Wire
Jacket
3
Nylon
TPE†
.65 -40°F to +250°F (-40°C to +121.1°C) 100 psi @ 70°F
(6.8 bar @ 20°C) 2.20
165570
Polypropylene .55 -40°F to +225°F (-40°C to +107.2°C) 164520
Versaplast™ .80 -40°F to +250°F (-40°C to +121.1°C) 182600
5
Polypropylene TPE†.55 -40°F to +225°F (-40°C to +107.2°C) 100 psi @ 70°F
(6.8 bar @ 20°C) 1.25
131100
Nylon .65 -40°F to +250°F (-40°C to +121.1°C) 140620
Versaplast™ Teflon®.80 -40°F to +300°F (-40°C to +148.9°C) 177100
5 - BSP Versaplast™ TPE†.80 -40°F to +250°F (-40°C to +121.1°C) 100 psi @ 70°F
(6.8 bar @ 20°C) 1.25 189422
7Polypropylene TPE†.55 -40°F to +225°F (-40°C to +107.2°C) 100 psi @ 70°F
(6.8 bar @ 20°C) 1.50 160450
Nylon .65 -40°F to +250°F (-40°C to +121.1°C) 160460
10 Polypropylene TPE†.55 -40°F to +225°F (-40°C to +107.2°C) 50 psi @ 70°F
(3.4 bar @ 20°C) 2.08 165800
Nylon .65 -40°F to +250°F (-40°C to +121.1°C) 165900
12 Noryl®TPE†.80 -40°F to +225°F (-40°C to +107.2°C) 100 psi @ 70°F
(6.8 bar @ 20°C) .70 191080
13 Polypropylene TPE†.55 -40°F to +225°F (-40°C to +107.2°C) 100 psi @ 70°F
(6.8 bar @ 20°C) 2.20 197050
N.O.
N.C.
GASKET, HNBR (FDA Compliant)
NUT, 5/8˝-11
.85˝ DIA.
(21.6 mm)
.90˝
(23 mm)
.10˝
(2.5 mm)
1.48˝
(37.6 mm)
3.85˝
(97.8 mm)
4.093˝
(104 mm)
.33˝
(8.4 mm)
11/16˝ DIA.
(18 mm)
1-5/64˝
(27 mm)
BUNA
GASKET
3-59/64˝ REF.
(100 mm)
2-23/32˝ REF.
(69 mm)
5/8˝-11
THREAD
ZIP CORD
LEAD WIRES
24˝ - 26˝
EXTENDED
LOCKING
NUT
3-51/64˝
(94 mm)
ZIP CORD
LEADWIRES
24˝
EXTENDED
1/2˝ WRENCH FLATS
9/16˝-24 THD.
JAM NUT (NYLON)
GASKET (BUNA 'N')
2-43/64˝
(69 mm)
1-1/8˝
(29 mm)
N.O. N.C.
Nylon is ideal for oils and fuels.
NSF Standard 61 polypropylene is ideal for potable water and broad chemicals.
Versaplast™ is ideal for corrosive fluids, hot water, antifreeze, chemicals and oils.
How To Order – Select Part Number based on specifications required.
* Polysulfone and Ryton® R-4 are available upon request.
† Thermoplastic Elastomer Zip Cord, 22 AWG.
Note: NSF C2 Versions available. Contact factory.
– Stock Items.
See alloy versions on next page.
FLOAT TYPE
