Molded Annular Edge Glass Circles
Maxos Molded Annular Edge replacement glass has outstanding Quality and Clarity characteristics. It has a standard thickness of 3/4" and is made of borosilicate.

Model 540M - Annealed
This glass is used for the lower pressure applications

Model 541M - Tempered
This tempered glass is used for higher pressure applications. 		 
Model Diameter PSIG
540M-1
 540M-2
540M-3
 540M-4
540M-5		 4"
5"
6"
6-3/4"
8-3/8"		 150
100
60
45
 30
541M-1
541M-2
541M-3
541M-4
541M-5		 4"
5"
6"
6-3/4"
 8-3/8"		 450
300
180
135
 90
Flat Gauge Glass - Reflex & Transparent

 See Shields.
 See Gaskets.
  Also available is 30mm wide
  Reflex and Transparent
  Gauge Glass and Almax II
  Aluminosilicate.

Model 545 - Reflex
Width: 1.300-1.339"
Thickness: .661"-.689"
Flatness: .005"

Model 546 - Transparent
 Width: 1.300-1.339"
Thickness: .661"-.689"
Flatness: .005"

Model 547 HP Transparent.
Same as 546 except Flatness: .002" 		  Maxos Flat Gauge Glass is manufactured from a special 8488 formulated borosilicate glass, characterized by low coefficient of expansion, high chemical durability, and exceptional homogeneity.

These glasses are used in armored gauges as shown on page 37 and 38.
      Pressure and Temperature Ratings
  Model   Glass Size   Length Inches Steam Boiler, No Mica, Max Pressure at 470°F Steam Boiler, Mica Protected Max Pressure at 608°F Non-Steam Service Max Max Pressure at 100°F
545-1
545-2
545-3
545-4
545-5
545-6
545-7
545-8
545-9		 1
2
3
4
5
6
7
8
9		 4-1/2
5-1/2
6-1/2
7-1/2
8-5/8
9-7/8
11
12-5/8
13-3/8		 500
PSIG 		    Mica Not used with Reflex Gauge Glass   4000
PSIG
546-1
546-2
546-3
546-4
546-5
546-6
546-7
546-8
546-9		 1
2
3
4
5
6
7
8
9		 4-1/2
5-1/2
6-1/2
7-1/2
8-5/8
9-7/8
11
12-5/8
13-3/8		 500
PSIG		 1000
SIG		 4000
PSIG
547-1
547-2
547-3
547-4
547-5
547-6
547-7
547-8
547-9 		1
2
3
4
5
6
7
8
9		 4-1/2
5-1/2
6-1/2
7-1/2
8-5/8
9-7/8
11
12-5/8
13-3/8		 500
PSIG		 1500
PSIG		 5000
PSIG

 
Catalog Page 44
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John C. Ernst Co., Inc.
Sparta, NJ • Tel: 973-940-1600 • Fax: 973-940-1620
Toll Free: 1-888-463-7678
Email: info@johnernst.com

Mailing Address
21 Gail Court
Sparta, NJ 07871
Physical Address
21 Gail Court
Sparta, NJ 07871