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LOW-COST LIQUID-LEVEL SWITCHES
Single Station, Vertical Mounting
LV Series
U Low Cost and Compact
for General Purpose
Level Monitoring
U Shock and
Vibration Resistant
U Mounts Vertically at
Top or Bottom of Tank
U Reed Switch Design
for High Repeatability
U User Selectable,
Normally Open or
Normally Closed
SPST Switch
Note: To determine fluid specific gravity,
add 0.1 to float specific gravity in clean
liquids and 0.3 to float specific gravity
in dirty or viscous liquids.
The LV-10 Series level switches
feature a small float displacement,
especially suited for narrow or
restricted areas. A standard 1⁄8 MNPT
fitting allows for quick installation in
either the top or bottom of the tank
or vessel. A sealed SPST switch
provides consistently high accuracy
and repeatability while minimizing
the effects of shock, vacuum, or
vibration. Extremely versatile, the
switch is user selectable as normally
open or normally closed by simply
removing the retaining clip and
inverting the position of the float.
For intermediate float displacement,
the LV-20 Series will yield long
life and greater stability for a
broad range of level monitoring
requirements. The LV-30 Series
larger float displacement is intended
for use with liquids of high viscosity,
and is well suited for harsh
environments. Both models share
the standard features of the LV-10.
Visit us online for maximum voltage/
current ratings.
LV-10 shown larger
than actual size.
1
/
NPT
8
1
/
" HEX
2
1.00"
1" DIA
SPECIFICATIONS
Stem Material: Brass or 316 SS
Float Material: Buna
Other Wetted Materials: 316 SS,
Hysol epoxy
Operating Temperature:
Water: -40 to 82°C (-40 to 180°F)
Oil: -40 to 149°C (-40 to 300°F)
Mounting:
1
NPT for LV-30
⁄
4
To Order
Model No. Stem Material Switch Rating Pressure Rating
1
NPT for LV-10 and LV-20,
⁄
8
LV-20 shown larger than
actual size.
1
/
NPT
8
1
/
2
"
Hex
13
2
3
/
"
4
1
/
1 "
2
1
DIA
Note: All switch activation points have a tolerance of ±
1
1
/
"
4
LV-30 shown larger
than actual size.
5
/
" HEX
8
/
32
"
1 DIA
Switch: SPST
Switch Actuation: Approx.
distance from end of stem to mounting,
or at halfway point of float travel
Lead Wires: 22 AWG 24" polymeric
for LV-10; 18 AWG 24" polymeric for
LV-30 and LV-20
Specific Gravity of Float: LV-10: 0.50;
LV-20: 0.58; LV-30: 0.43
LV-10 Brass 20 VA 300
LV-11 316 SS 20 VA 300
LV-20 Brass 20 VA 150
LV-21 Brass 100 VA 150
LV-22 316 SS 20 VA 150
LV-23 316 SS 100 VA 150
LV-30 Brass 20 VA 150
LV-31 Brass 100 VA 150
LV-32 316 SS 20 VA 150
LV-33 316 SS 100 VA 150
Comes complete with operator’s manual.
Ordering Examples: LV-20, vertical-mounted liquid-level switch with a brass stem and switch
rated to 20 VA.
LV-31, 100 VA rated switch with a brass stem.
1
/
NPT
4
17
/
"
2
32
13
/
"
1
16
7
/
"
8
1
the
⁄
2
1
"
⁄
8
K
K-90
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