SERIES G11 - STYLE 503

DURAN® LOW PRESSURE TUBULAR GAUGE GLASS

WE CUT TO ANY LENGTH!

Features:

  • Clear tubular glass for low pressure non-steam and steam 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”+0, -3/64”15/32”5/64”±1/64”1-1/2” to 72”Stock
3/4”+0, -3/64”9/16”3/32”±1/64”1-1/2” to 72”Stock

G11 Style 503 5/8" OD Pressure Ratings

Maximum Working Pressure Ratings (PSIG)
With No Corrosion
5/8" OD
Non-SteamSaturated Steam Boiler Service
Duran® CodesLength*150°F425°F338°F
10844976203108"200100100
108449862033010"210100100
108450062035012"205100100
108450262037014"200100100
108450362039016"195100100
108431662041018"190100100
108633962043020"185100100
108432162047024"180100100
108432262048030"175Not RatedNot Recommended
108450762049036"165Not RatedNot Recommended
108450862051048"140Not RatedNot Recommended
108451162053060"120Not RatedNot Recommended
108451262055072"100Not RatedNot Recommended

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

G11 Style 503 3/4" OD Pressure Ratings

Maximum Working Pressure Ratings (PSIG)
With No Corrosion
3/4" OD
Non-SteamSaturated Steam Boiler Service
Duran® CodesLength*150°F425°Fup to 425°F
10980826206108"200100100
109800962063010"210100100
108451362065012"205100100
108432862067014"200100100
108451462069016"195100100
108451562070017”190100100
109003762071018"190100100
109812062073020"185100100
108433062077024"180100100
109812262078030"175Not RecommendedNot Recommended
108451662079036"165Not RecommendedNot Recommended
108433162081048"140Not RecommendedNot Recommended
108451762083060"120Not RecommendedNot Recommended
108451862085072"100Not RecommendedNot Recommended

Options

  • Height Scale Tape in Inches
  • 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