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LIQUID MANAGEMENT

LIQUID INDICATORS

Weld-in

The function of a Liquid Indicator is to provide visual indication of

fluid level or flow within a vessel or piping system.

Applications

Henry Technologies' Liquid Indicators are used in a variety of refrigeration

and industrial applications. The Liquid Indicators feature weld-in housings

with a replaceable Sight Glass in clear or Reflex lens. The Clear Lens

design allows for unobstructed visual inspection of fluid level or flow while the

Reflex lens is designed to allow easier fluid level inspection by appearing

dark when liquid is present and light when liquid is absent. The optional

Frost Shield allows easy view of the Sight Glass when installed in an

application where insulation is used.

Henry Technologies' Liquid Indicators are suitable for use with ammonia,

HFC and HCFC refrigerants and their associated oils, as well as other

industrial fluids non-corrosive to steel, glass and Teflon.

Main Features

Ÿ

Patented Henry Technologies' Design*

Ÿ

Weld-in connection

Ÿ

Replaceable, hermetically sealed clear or Reflex lens Sight Glass

Ÿ

Frost shield available for insulated applications

Ÿ

Plated steel housing

Materials of Construction

The Liquid Indicators body is made of plated steel. The Sight Glass body is

plated steel with hermetically sealed soda lime glass lens. The Sight Glass

seal is made of Teflon.

Technical Specifications

Maximum working pressure = 500 PSI (34.4 Bar)

Allowable operating temperature = -40°F to +250°F (-40°C to +121°C)

Henry Technologies' Liquid Indicators are constructed to ASME Section VIII,

Division 1 UG-11 (a) (1). Additionally, Liquid Indicators can be CE marked in

accordance with PED by adding a “-CE” suffix to the part number. (i.e. LI-50-

4W-CE.)

Installation - Notes

1. Sight Glass assembly must be removed before welding Liquid Indicator

body.

2. A metal protector is supplied to cover the threads on the body to avoid

damage by welding spatter.

3. Ensure Liquid Indicator body is cool and clean before installing Sight

Glass.

4. Full instructions are given in the Product Instruction Sheet, included

with each Liquid Indicator.

Part No

Dimensions (inch)

CE Cat**

Weight (lbs)

ØA

ØB

C

D

E*

LI-49-2W

1.90

2.19

0.85

2.67

4.67

CAT I

1.5

LI-49-4W

1.90

2.19

2.50

4.42

6.42

CAT I

2.0

LI-50-2W

1.90

2.19

0.85

2.67

4.67

CAT I

1.5

LI-50-4W

1.90

2.19

2.50

4.42

6.42

CAT I

2.0

*Dimension includes Frost Shield sold separately

**Optional Cat I CE models available by adding “-CE” suffix to part number. (i.e. LI-50-4W-CE)

Accessories and Replacement Parts

Part No

Description

FS-2-1/2

Frost Shield

LI-49A-3AR

Clear Sight Glass

LI-50A-3AR

Reflex Sight Glass

2-023-053

Teflon Seal

UG

89

E

D

C

Ø

A

Ø

B

1 2

3

Œ

Teflon Seal



Sight Glass

Ž

Optional Frost Shield