SERIES G11 - STYLE 508

DURAN® HEAVY WALL REDLINE TUBULAR GAUGE GLASS

WE CUT TO ANY LENGTH!

Why Redline?
Redline striped glass makes clear liquids such as water very easy to see compared to clear glass tubes, especially when viewing from a distance. By positioning the redline stripe opposite or away from the operator’s viewing position, the redline stripe is magnified by the water in front of it. In the tube where the clear liquid is present, the red stripe appears much wider compared to where there is no liquid.
Features

  • Heavy Wall Redline tubular glass for high pressure and steam applications
  • Best gauge glass for saturated steam/water applications
  • High Quality Borosilicate Duran® glass manufactured by Schott North America, Inc.

Sizes

Outside
Diameter (OD)
Outside
Diameter
Tolerances
Inside Diameter (ID)Wall
Thickness
Wall
Thickness Tolerance
Lengths
±1/16"
Availability
5/8"+1/64, -3/64"1/4"3/16"+3/64", -01-1/2" to 48"Ships same or next day
3/4"+1/64, -3/64"5/16"7/32"+1/16", -01-1/2" to 48"Ships same or next day

G11 Style 508 5/8" OD Pressure Ratings

Maximum Pressure Ratings (PSIG)
With No Corrosion
5/8" OD
Non-SteamSaturated Steam
Boiler Service
Length*Duran® Codes150°F425°Fup to 425°F
8”--600350310
10"--600345310
12"1084529620079N600340310
14"--600335310
16"1084521620011N600325310
18"--600320310
20"1084318620446N600315310
24"1084428620447N580300300
30"1084544620448N550Not RecommendedNot Recommended
36"1084536620354N500Not RecommendedNot Recommended
48"1084542620428340Not RecommendedNot Recommended

*For in-between lengths apply the ratings of the next longer length.

G11 Style 508 3/4" OD Pressure Ratings

Maximum Pressure Ratings (PSIG)
With No Corrosion
3/4" OD
Non-SteamSaturated Steam
Boiler Service
Length*Duran® Codes150°F425°Fup to 425°F
8”--600350310
10"--600345310
12"1084319620449600340310
14"--600335310
16"1084545620451600325310
18"--600320310
20"1084523620013600315310
24"1084525620024580300300
30"1084320620453550Not RecommendedNot Recommended
36"1084530620211500Not RecommendedNot Recommended
48"1084537620373340Not RecommendedNot Recommended

*For in-between lengths apply the ratings of the next longer length.

Ratings
*For in-between lengths apply the ratings of the next longer length.

Options

  • Tighter length tolerances less than ±1/16”, please inquire

Application Notes

  • Steam Service: Limited to 24” Lengths
  • Vacuum Service: Acceptable with properly designed valves and seals
  • Compatibility: Before ordering, verify that all the materials of construction, pressures, temperatures, and any other specifications are compatible with the design, media(s), cleaning solutions, and the environment of the application and future applications. The John C. Ernst Co. does not make compatibility recommendations. Compatibility determinations, corrosion or otherwise, are the responsibility of the user.
    Some medias reduce the useful life of gauge glass by chemical action, such as Hydrofluoric Acid (HF), hot concentrated Phosphoric Acid (H3PO4), Sodium Hydroxide (NaOH) and Potassium Hydroxide (KOH) above 125°F, steam or superheated water above 250°F. Alkaline solutions attach glass very slowly at room temperatures, but as temperature is increased over 100°F, the corrosion rate rises rapidly. Steam can etch or corrode glass thus weaken the glass tube.

Warning WARNING: This product can expose you to certain chemicals, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov
Alternate Glass Tubing

Alternate Plastic Tubing

Model Number Matrix
Model Number Matrix