139
Heating & A/C
Gauge Glasses
Standard Glass
Part # Dia. Length
Maximum Recommended
Working Pressure (psi)
Temp Up To
150°F
Steam Boiler
Up To 425°F
69-40500
5/8"
8"
205
100 psi
69-40505
10"
69-40510
12"
69-40515
14"
190
69-40525
18"
69-40530
24"
180
69-40532
36"
165
*
* Maximum recommended length in this service is 24".
Standard Gauge Glass
This glass is widely used in low pressure steam boiler applications. Easily cut to size using Crown's squeeze and
pop cutter 12-40420. Sizes are standard but other lengths are available upon request.
High Pressure Gauge Glass
Part # Dia. Length
Maximum Recommended
Working Pressure (psi)
Temp Up To
150°F
Steam Boiler
Up To 425°F
69-40535
5/8"
8"
435
320
69-40540
10"
420
312
69-40545
12"
410
305
69-40550
14"
390
295
69-40555
18"
360
280
69-40560
24"
320
255
69-40566
36"
245
*
* Maximum recommended length in this service is 24".
High Pressure Gauge Glass
These high pressure gauge glasses are made from Schott's heat resistant Borosilicate brand tubing. They are a
very popular model in the industry for their super versatility.
High Pressure Red-Line Gauge Glass
Part # Dia. Length
Maximum Recommended
Working Pressure (psi)
Temp Up To
150°F
Steam Boiler
Up To 425°F
69-40557
1/2"
24"
280
270
69-40565
5/8"
12"
335
280
69-40570
14"
325
275
69-40572
16"
315
270
69-40576
24"
265
255
69-40578
36"
205
*
69-40584
3/4"
12"
330
275
* Maximum recommended length in this service is 24".
High Pressure Red-Line Gauge Glass
Red stripe on a white background gives a special optical effect which makes liquid level stand out clearly. This
feature allows for easy viewing of liquid levels from greater distances.
Gauge Glasses
