Master Catalog — Gems Sensors & Controls - B-23

LS-800 Series - Continued
1. Mounting Types - continued
Type 5 External Mounting
units are ideal for tanks
with limited access to tops
or bottoms.

LS-800-A Series
Adjustable Mounting

Type 5
External Mount, Multi-Station
2-5/8
(66.7)
DIA. REF.

1/4˝-20 THD. REF

2 MIN.
(50.8)

1-3/4
(44.5)
3/4˝ NPT

UNIT LENGTH
Lo + 2˝
MAX. Lo = 120˝
MIN. Lo = 4-1/2˝

PIPE, 2-1/2˝ PS
SCH.40
2-3/8
(60.33)
Ø2-7/8
(73.03)

2 MIN.
(50.8)
inch
(mm)

Housing Material

Brass

316 Stainless Steel

Stem and Mounting

Brass

316 Stainless Steel

Port Sizes

3/4˝ NPT
Beryllium Copper

MAX.
ADJUST

FLOAT
STOP

Using Gems SAFE-PAK® relays and
barriers, these switches provide
automatic refills/pumpdown and are
intrinsically-safe without explosionproof housing and piping.

120˝ (305 cm)

Float Stops*

MOUNTING

Intrinsically-Safe Relays

3/4˝ NPT PORTS (2X)

Max. Length (Lo)

UNION

Note: Maximum overall length is
limited to 72˝ with this option.

N.O.

N.C.

LEVEL SWITCHES - MULTI POINT

Available for LS-800 Series
Mounting Types 2, 3 and 4.
Special cinch-nut on
mounting allows stem to
travel up or down for fine
tuning the actuation points.
The extent of adjustment
depends on unit length and
distance from mounting to
highest float stop. When
ordering, specify " LS-800-A "
as Series Type.

1/2˝ FNPT

0-RING

2-1/4˝-12 UNF MTG.

UNIT STEM
ADJUSTED
UPWARD

S.S. ARMCO PH-15-7 MO

*	 Units greater than 72˝ overall length are supplied with collars with setscrews (made of same material as
stem and mounting) in place of float-stop rings. Collars are optional on units less than 72˝ overall length.
Units requiring 316 SS float stops must be special ordered with 316 SS collars instead of grip rings. In some
instances, concentration of chlorine and other corrosive compounds in the media require the use of collar
type float stops. Consult factory for details.

2. Float Types
A single float type is selected for use at all actuation points. Be sure, by reviewing the table
below, that the desired float is compatible with the Mounting Type selected in Step 1.
Float Material

See Section L

Buna N

Compatible
Mounting Types

1, 2, 3, 4, 8

2

1-5/16˝
(33.3 mm)

Float
Dimensions
1-1/16˝
DIA.
(27 mm)

Part Number

1, 3, 4, 5

1-13/16˝
(46.0 mm)

1-3/4˝
(44.5 mm)

1-1/4˝
DIA.
(31.8 mm)

253644

316 Stainless Steel
3, 4, 5
(Units >72˝)

26032

1-7/8˝
DIA.
(47.6 mm)

1-13/16˝
(46.0 mm)

1, 3, 4, 5
(Units ≤72˝)

2-3/32˝
(53.3 mm)

2-1/16˝
(52.4 mm)

24864

14569

Min. Media
Specific Gravity

0.55

0.75

0.55

253644

26032

0.55

0.75

5

24864

150

0.75

138935

0.80

14569

15666

138935

750

300

180

150
Brass
316 S.S.

1.63˝ MAX. DIA.
(41.4mm)

Float Part Number
10558

4

Mounting Type

2-1/16˝
(52.4 mm)

-40°F to +300°F
(-40°C to +149°C)

Pressure Ratings Chart (PSI, Max.)
1, 2, 3

1.36˝
(34.6mm)

2-11/16˝
(68.3 mm)

15666

Water: to 180°F (82°C)
Oil: -40°F to +230°F (-40°C to +110°C)

Operating Temperature

1, 3, 4

2˝
(50.8 mm)

1-7/8˝
DIA.
(47.6 mm)

10558

3, 4, 5
(Units >72˝)

180

100 @ 70°F (21°C)
150

750

300

120

Review the Compatible Mounting Type row in the " Float Types " table above this matrix for produceable mounting/float combinations.
Not all combinations implied by this Pressure Rating Chart are possible or recommended.

B-23

Visit www.GemsSensors.com for most current information.

LS-800 Series / p2of5 / 08-JUN-20

http://ecatalog.gemssensors.com/ecatalog/configurators/LS800 http://ecatalog.gemssensors.com/ecatalog/configurators/LS800 http://ecatalog.gemssensors.com/ecatalog/configurators/LS800 http://ecatalog.gemssensors.com/ecatalog/configurators/LS800 http://www.GemsSensors.com

Master Catalog — Gems Sensors & Controls

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