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www.henrytech.com

COMPRESSOR PROTECTIVE DEVICES

SIGHT GLASS COMPONENTS

Applications

Henry Technologies offers two styles of 3-bolt Sight Glasses for use on

compressor crankcases or Mechanical and Electro-Mechanical Oil Level

Regulators. The Sight Glasses are available with a Reflex Lens or a Prism

Lens. The Reflex Lens is designed to allow easier fluid level inspection by

appearing dark when liquid is present and light when liquid is absent.

Similarly, the Prism Lens will appear as a bright double line under partial fluid

level and completely disappear under full fluid contact.

Henry Technologies' replacement Sight Glasses 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 synthetic rubber.

Materials of Construction

All Sight Glasses feature a plated steel body with hermetically sealed soda

lime glass lens.

Technical Specifications

Maximum working pressure = 500 PSI (34.4 Bar)

Allowable operating temperature = -20°F to +300°F (-29°C to +149°C)

Henry Technologies' Sight Glasses are USR and CNR recognized by

Underwriters Laboratories, Inc.

Installation - Notes

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

with each Sight Glass.

3-BOLT SIGHT GLASSES

Part No

Fig No

Dimensions (inch)

A

B

C

2-020-006

1

0.777

0.524

0.937

SG-1300

2

0.777

0.524

0.937

FIG 1

FIG 2

THREADED SIGHT GLASSES

Applications

Henry Technologies offers two styles of threaded Sight Glasses for

replacement components on Oil Reservoirs and Oil Separator-Reservoirs.

The male threaded design was used until May 1988 and the Female

threaded design has been used from May 1988 to present. Both designs are

currently available as replacement parts.

The Sight Glasses are available with a Clear Lens or Clear Lens with Float

Ball. The Clear Lens design allows for unobstructed visual inspection of fluid

level. The Float Ball series is designed to provide easier inspection of fluid

level. The standard Float Ball is made of TPX plastic and will float in an fluid

with a specific gravity greater than 0.85.

Henry Technologies' replacement Sight Glasses are suitable for use with

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

industrial fluids non-corrosive to steel, glass and TPX Plastic.

Part No

Fig No Gasket

Part No

Dimensions (inch)

A (hex)

B

3-020-052

1 2-023-019

1.25

1.13

3-020-053

2 2-023-019

1.25

1.13

3-020-010

3 2-023-005

1.25

0.67

3-020-011

4 2-023-005

1.25

0.67

Technical Specifications

Maximum working pressure = 500 PSI (34.4 Bar)

Allowable operating temperature = -20°F to +300°F (-29°C to +149°C)

Henry Technologies' Sight Glasses are USR and CNR recognized by

Underwriters Laboratories, Inc..

Materials of Construction

All Sight Glasses feature a plated steel body with hermetically sealed soda

lime glass lens. The Float Balls are made of TPX plastic.

FIG 1

FIG 2

FIG 3

FIG 4

A

B

B

B

B

1

1

1

1

Œ

1-1/8” - 24 Thread

Œ

1-1/8” - 24 Thread

Œ

1” - 20 Thread

Œ

1” - 20 Thread

A

A

C B

1

Œ

3 Bolt 1-7/8” BC

C B

A

A

1

A

A

A

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