Type A, Plain

Designed for moderate-pressure

Type A, High Pressure

To be used in higher pressure applications

Type B, Reflex

For ease in determining liquid levels

Features

The MACBETH Brand Gauge Glass is considered by many to be the “Standard of the Industry”. These high quality gauge glasses are for use in armored-type gauge assemblies for observation of high temperature and high pressure liquid levels. Safety and quality starts with the use of special quality borosilicate glass that is manufactured under carefully controlled conditions. The glass is tempered to provide high strength and has a low degree of thermal expansion to resist thermal shock.

Types

The three standard types of gauge glass are listed: Type A, Plain is designed for moderate-pressure steam boilers and liquid level indicators. Type A, High Pressure is controlled to tighter flatness tolerances to be used in higher pressure applications. Type B, Reflex is made for ease in determining liquid levels, especially in clear fluids. The glass has vertical prisms extending the full viewing length of the glass. The prism side faces the liquid, and the sections of the prisms not covered in liquid reflect light brilliantly. The sections covered by liquids appear dark in contrast.

Type A, Plain

Item Code

Size

Length (L)

Inch

mm

Ratings

Steam, No Mica

Steam, With Mica

Non-Steam

3400MB-01T

3400MB-02T

3400MB-03T

3400MB-04T

3400MB-05T

3400MB-06T

3400MB-07T

3400MB-08T

3400MB-09T

1

2

3

4

5

6

7

8

9

4 1/2

115

5 1/2

140

6 1/2

165

7 1/2

190

8 5/8

220

9 7/8

250

11

280

12 5/8

320

13 3/8

340

500 PSIG @
470°F

1000 PSIG
@ 608°F

5000 PSIG
@ 100°F

Type A, High Pressure

Item Code

Size

Length (L)

Inch

mm

Ratings

Steam, No Mica

Steam, With Mica

Non-Steam

3400MB-01HP

3400MB-02HP

3400MB-03HP

3400MB-04HP

3400MB-05HP

3400MB-06HP

3400MB-07HP

3400MB-08HP

3400MB-09HP

1

2

3

4

5

6

7

8

9

4 1/2

115

5 1/2

140

6 1/2

165

7 1/2

190

8 5/8

220

9 7/8

250

11

280

12 5/8

320

13 3/8

340

500 PSIG @
470°F

1500 PSIG
@ 608°F

6000 PSIG
@ 100°F

Type B, Reflex

Item Code

Size

Length (L)

Inch

mm

Ratings

Steam, No Mica

Steam, With Mica

Non-Steam

3400MB-01R

3400MB-02R

3400MB-03R

3400MB-04R

3400MB-05R

3400MB-06R

3400MB-07R

3400MB-08R

3400MB-09R

1

2

3

4

5

6

7

8

9

4 1/2

115

5 1/2

140

6 1/2

165

7 1/2

190

8 5/8

220

9 7/8

250

11

280

12 5/8

320

13 3/8

340

500 PSIG @
470°F

Mica not
used with
Reflex

4000 PSIG
@ 100°F

Specifications

  • DIN 7081
  • BS 3463
  • MIL-G-16356 D (High Pressure Type only)

1-800-554-1394

357 Spook Rock Rd | Suffern, NY | 10901

sales@macbethgaugeglass.com

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