The ARCHON model SGP-18 consists of a piece of round clear plastic tube, with a metal retainer on each end and four rods. The tube is slotted at the rear for the entire length so that it can be slipped over the tubullar gauge glass without any interference. It is quick and simple to install or remove.
Maximum Recommended Working Pressure-PSIG
Type Glass
High Pressure Pyrex
Tubular Glasses
Red Line Pyrex
Tubular Glasses
Heavy Wall Pyrex
Tubular Glasses
Glass Length
Temperatures
Up to 150 F
No Corrosion
Steam
Boiler
Service
Up to 425 F
Temperatures
Up to 150 F
No Corrosion
Steam
Boiler
Service
Up to 425 F
Temperatures
Up to 150 F
No Corrosion
Steam
Boiler
Service
Up to 425 F
Up to 12"
400
300
330
275
600
340
13" to 18"
355
275
300
260
600
320
19" to 24"
315
250
260
250
580
300
25" to 30"
275
***
230
***
550
***
31" to 36"
240
***
200
***
500
***
37" to 48"
190
***
160
***
340
***
49" to 60"
145
***
125
***
Maximum Length 48" Long
*** Not recommended for service at this temperature
