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FLAT GLASS BOILER GAUGES
CLEAR FLAT GLASS BOILER WATER GAUGES
For Steam* Pressure up to 900 PSI @ 534˚F
With Mica Shield
Heat-treated flat glass with mica protection makes this Ernst Flow Industries Gauges an efficient, boiler water level indicator. Finest quality borosilicate glass of special composition to resist temperature shock is carefully tested for surface trueness and assembled with best quality sheet mica in heavy steel housing. The mica resists corrosive effects of steam and water. Clamping of the 900 PSI design features individual “fingers” which assemble easily and promote uniform bolt pressure to assure gasket tightness. The assembly is easily dismantled for cleaning and other maintenance. Window slot 1/2” wide provides a highly visible gauge reading which can be accentuated by using an Ernst Flow Industries illumination assembly. Made in single and multiple window style to handle a wide range of visibility requirements. See table below.
Chamber: Steel
Cover: Steel
Special inserts up to *1500 PSI @ 596˚F upon request
Model
Visibility
Minimum Gauge Centers
Approx.
Weight (lbs)
SINGLE WINDOW INSERTS
EFI FG904
EFI FG905
EFI FG906
EFI FG907
EFI FG908
EFI FG909
6-5/8"
7-3/4"
9"
10-1/8"
11-3/4"
12-1/2"
17
18
20
21
22
23
22
25
28
31
34
37
DOUBLE WINDOW INSERTS
EFI FG966
EFI FG977
EFI FG988
EFI FG999
15"
17-1/2"
20"
21-1/2"
26
29
31
33
62
67
72
78
Minimum centers shown apply to use with EFI SG854, EFI SG855, or EFI SG860
*WARNING: For use with POWER BOILER STAURATED STEAM APPLICATIONS ONLY. MODEL EFI FG BOILER WATER GAUGES ARE NOT TO BE USED WITH SATURATED STEAM.
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