Does this still allow the drum to vent? And has anyone use this on the B side of closed cell foam(polyol resin)?

Not really which is kinda stupid. We use it for our oil drums and always have issues with venting, eventually we just removed it because it was more trouble then it’s worth.

is the gauge water tight to be installed in the utside ? I would hate to get condensation and not be able to read it....

No It is not water tight. Not for outdoor use.

do you have a version that will fit on the 2'' port

Check your 2” port cap, some of them have a 3/4” threaded hole in the middle. You’ll have to punch out or cut the hole, but this fit perfectly in mine. Note, I did buy and install a short 3/4” riser to allow the gauge to screw on snuggly onto the 2” cap.

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GROZ Drum Level Indicator with 0-210 Liter Scale| Ideal for Fluid Level Checking in a Drum/Tank| Polyethylene Construction| Air Release Venturi| Fits on the Small 3/4" Hole| DLI/3-4/N

GROZ Drum Level Indicator with 0-210 Liter Scale| Ideal for Fluid Level Checking in a Drum/Tank| Polyethylene Construction| Air Release Venturi| Fits on the Small 3/4" Hole| DLI/3-4/N

Product ID: 295745664

Details

Brand
Groz
Item Weight
150 Grams
Item dimensions L x W x H
24 x 5 x 4.5
Material
polyethylene
Number of Items
1

📏0-210L clear scale

⚙️Planetary gear float tech

🛠️Fits 3/4" drum hole

Description

📊 Stay ahead of the curve—never run dry with Groz Drum Level Indicator!

INSTANT VISUAL ALERTS - Clear 0-210 liter scale lets you know exactly when it’s time to reorder, avoiding downtime and surprises.
UNIVERSAL COMPATIBILITY - Durable polyethylene construction works seamlessly with oil, fuel, water, coolants, and more.
SPACE SMART INSTALLATION - Fits perfectly into small 3/4" bung holes, leaving the main 2" opening free for pumps or other accessories.
EFFORTLESS FLUID MONITORING - Simple planetary gear float mechanism ensures near zero maintenance and reliable level indication.
BUILT FOR INDUSTRIAL EFFICIENCY - Lightweight (150g) and compact design (24x5x4.5 cm) tailored for professional environments.

The Groz Drum Level Indicator is a precision-engineered polyethylene gauge designed for quick, approximate fluid level checks in drums and tanks. Featuring a low-maintenance planetary gear float system and a clear 0-210 liter scale, it fits standard 3/4" bung holes, making it an indispensable tool for professionals managing oils, fuels, coolants, and water. Its compact, durable design ensures seamless integration into industrial workflows, helping you avoid costly downtime by signaling when to reorder.

Specifications

ASIN	B077WRMPMP
Best Sellers Rank	#84,737 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #17 in Scale & Balance Accessories
Brand Name	Groz
Customer Reviews	3.7 3.7 out of 5 stars (100)
Global Trade Identification Number	08901486480015
Importer Contact Information	GROZ NET INDUSTRIES, Village- Kherki Daula, N.H. # 8, Gurgaon ( Haryana )- 122001 ; 0124-2827700
Included Components	1 Lever
Item Dimensions	24 x 5 x 4.5 Centimeters
Item Type Name	Tools
Item Weight	150 Grams
Manufacturer	GROZ NET INDUSTRIES, Village- Kherki Daula, N.H. # 8, Gurgaon ( Haryana )- 122001 ; 0124-2827700, Groz
Manufacturer Contact Information	GROZ NET INDUSTRIES, Village- Kherki Daula, N.H. # 8, Gurgaon ( Haryana )- 122001 ; 0124-2827700
Material Type	polyethylene
Model Number	48003
Number of Items	1
Number of Packs	1
Packer Contact Information	GROZ NET INDUSTRIES, Village- Kherki Daula, N.H. # 8, Gurgaon ( Haryana )- 122001 ; 0124-2827700
Part Number	48001
Unit Count	1 Count

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