A-13
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LEVEL SWITCHES – SINGLE POINT
Material
Series
Number
Stem and
Mounting Float Other
Wetted
Min. Liquid
Sp. Gr. Operating Temperature Pressure,
PSI, Max.
Switch*
SPST
Part
Number
LS-1800
Brass Buna N
316 Stainless
Steel, Hysol
.75
Water: to 180°F (82°C)
Oil: -40°F to +230°F (-40°C to +110°C) 150
20 VA 01801
100 VA** 35651
316 Stainless
Steel
Buna N .75 20 VA 01807
100 VA** 35657
Teflon®.65 -40°F to +250°F (-40°C to +121°C) 300 20 VA, N.O. 01811
LS-1900
Brass
Buna N 316 Stainless
Steel, Hysol
.55
Water: to 180°F (82°C)
Oil: -40°F to +230°F (-40°C to +110°C) 150
20 VA 01901
100 VA*** 35676
316 Stainless
Steel .55 20 VA 01907
100 VA 35682
seireS0081-SL seireS0091-SL
taolFNanuB taolFn
®
olfeT taolFNanuB
1-1/4" DIA.
(31.7 mm)
2-15/16"
(74.6 mm)
1/2" HEX
(12.7 mm)
1/8" NPT
17/32"
(13.5 mm)
7/8"
(22.2 mm)†
1-3/4"
(44.5 mm)
2-13/32"
(61.1 mm)
1-1/4" DIA.
(31.75 mm)
2-15/16"
(74.6 mm)
1/2" HEX
(12.7 mm)
1/8" NPT
17/32"
(13.5 mm)
7/8"
(22.2 mm)†
1-3/4"
(44.5 mm)
2-13/32"
(61.1 mm)
FLAT
WASHER
SPRING
1-7/8"
DIA.
(47.6 mm)
3-3/16"
(80.9 mm)
5/8" HEX
(15.9 mm)
1/4" NPT
21/32"
(16.7 mm)
1-3/16"
(30.2 mm)†
1-13/16"
(46.1 mm)
2-17/32"
(64.3 mm)
Large Size – Alloys
LS-1800 and LS-1900 Series are a Step Above Our Plastic Units for Pressure Capabilities
Excellent stability for general use in oils and water.
LS-1800 Series –
Buna N Float
LS-1800 Series –
Teflon® Float
LS-1900 Series –
Buna N Float
Intermediate in size, LS-1800 switches provide long life
and dependability to meet a broad range of requirements.
With large float displacement, switch
withstands rough service; is suitable
for high viscosity liquids.
Dimensions
†L1 = Switch actuation level, nominal (based on a liquid specific gravity of 1.0).
Common Specifications
Electrical Termination: No.18 AWG, 24˝ L., Polymeric Lead Wires.
Approvals: All Switches on this page are U.L. Recognized – File No. E45168, and are CSA
Listed – File No. 30200.
Switch Operation: Selectable, N.O. or N.C., by inverting float on unit stem (except for
LS-1800 Series switch with Teflon® float). Units are shipped N.O. unless otherwise specified.
How To Order – Select Part Number based on specifications required.
*See “Electrical Data” on Page X-5 for more information.
**LS-1800 100 VA switches are not U.L. Recognized.
*** LS-1900 100VA unit is UL Resistive Rated.
FLOAT TYPE
