Flat Glass Gauges - Low Pressure

 

These gauges are designed for less demanding process conditions that maximize the mechanical and economical advantages of ductile iron covers.

These gauges are not recom- mended for Steam/Water applications. (See Page 39).

Model 479 Reflex - has a single vision slot on one side of the chamber in which light can enter to determine liquid level. Above the liquid level, glass prisms reflect the surrounding light giving typically a silvery appearance. Below the level, the liquid fills the prisms causing the glass to become relatively transparent giving a typically dark appearance.

Model 489 Transparent - has a vision slot on both sides of the chamber allowing light to enter the gauge opposite the observer so that the level or the liquid and its characteristics can be seen.

 

  Features
• Armored Design
• Reflex & Transparent Design
• Maximum Protection
• Conforms to AISI/ASTM Specs
• Up to 12 Feet Long
• 10 Section Maximum
• 1/2"NPT Female Ends (std)

Ratings
Pressures up to 2400 PSIG
Temperatures up to 650F

Materials
Chamber: Carbon Steel
                      316LSS(Opt.)
Covers: Ductile Iron
Glass: Tempered Borosilicate
Gaskets/Cushions: Grafoil GHP

See Notes about Corrosion

Pressure Range for Glass Sizes in PSIG with Std. Gaskets
Model Temp 1 2 3 4 5 6 7 8 9
479 100F 2400 2325 2250 2175 2100 2025 1950 1875 1800
479 600F 1780 1720 1670 1600 1550 1500 1440 1390 1340
489 100F 2000 1815 1630 1440 1250 1065 875 690 500
489 600F 1480 1340 1210 1060 920 790 645 510 370
Temperatures up to 650F with Aluminosilicate Glass.
For Valve Selection, See Page 36.
Models Length Minimum Centers if using the following Valve
Trans- Glass Overall Of Rigid Gauge Union Gauge #
Reflex parent Size Length Visible Glass 450
460
498 450
460
498 of Sectns
479R11 489T11 1 5-1/4 3-3/4 8-1/8 9-7/8 11-1/8 11-7/8
479R12 489T12 2 6-1/4 4-3/4 9-1/8 10-7/8 12-1/8 12-7/8
479R13 489T13 3 7-1/4 5-3/4 10-1/8 11-7/8 13-1/8 13-7/8
479R14 489T14 4 8-1/4 6-3/4 11-1/8 12-7/8 14-1/8 14-7/8
479R15 489T15 5 9-3/8 7-7/8 12-1/4 14 15-1/4 16 1
479R16 489T16 6 10-5/8 9-1/8 13-1/2 15-1/4 16-1/2 17-1/4
479R17 489T17 7 11-3/4 10-1/4 14-5/8 16-3/8 17-5/8 18-3/8
479R18 489T18 8 13-3/8 11-7/8 16-1/4 18 19-1/4 20
479R19 489T19 9 14-1/8 12-5/8 17 18-3/4 20 20-3/4
479R24 489T24 4 16-1/2 15 19-3/8 21-1/8 22-3/8 23-1/8
479R25 489T25 5 18-3/4 17-1/4 21-5/8 23-3/8 24-5/8 25-3/8
479R26 489T26 6 21-1/4 19-3/4 24-1/8 25-7/8 27-1/8 25-7/8 2
479R27 489T27 7 23-1/2 22 26-3/8 28-1/8 29-3/8 30-1/8
479R28 489T28 8 26-3/4 25-1/4 29-5/8 31-3/8 32-5/8 33-3/8
479R29 489T29 9 28-1/4 26-3/4 31-1/8 32-7/8 34-1/8 34-7/8
479R36 489T36 6 31-7/8 30-3/8 34-3/4 36-1/2 37-3/4 38-1/2
479R37 489T37 7 35-1/4 33-3/4 38-1/8 39-7/8 41-1/8 41-7/8 3
479R38 489T38 8 40-1/8 38-5/8 42 44-3/4 46-1/8 46-3/4
479R39 489T39 9 42-3/8 40-7/8 45-1/4 47 48-1/4 49
479R47 489T47 7 47 45-1/2 49-7/8 51-5/8 52-7/8 53-5/8
479R48 489T48 8 53-1/2 52 56-3/8 58-1/8 59-3/8 60-1/8 4
479R49 489T49 9 56-1/2 55 59-3/8 61-1/8 62-3/8 63-1/8
For Gauges of 5 to 10 Sections consult Sales Office
 
Catalog Page 37
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John C. Ernst Co., Inc.
Sparta, NJTel: 973-940-1600Fax: 973-940-1620
Toll Free: 1-888-463-7678

Email: info@johnernst.com

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