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Universal Air Gap for Water Softeners and Filters with 1/2-inch OD or 5/8-inch ID Inlet Port and 1-1/2-inch or 2-inch Drainpipe Outlet (AG100-001, MR. DRAIN, 34700)
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Universal Air Gap for Water Softeners and Filters with 1/2-inch OD or 5/8-inch ID Inlet Port and 1-1/2-inch or 2-inch Drainpipe Outlet (AG100-001, MR. DRAIN, 34700)

4.5/5
Product ID: 29387362
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Details

  • Size
    1 Count (Pack
  • Material
    Plastic
  • Brand
    AIR GAP
  • Color
    Gray
  • Connector Type
    Elbow
  • Thread Size
    1/2"
💧12.5 GPM max flow rate
🔗Fits 1/2" OD & 5/8" ID inlet tubing
🛠️Compatible with 1.5" & 2" standpipes

Description

💧 Keep your water system flawless and splash-free with MR. DRAIN’s universal air gap!

  • DURABLE LIGHTWEIGHT - Robust plastic build weighing just 1.6 ounces—engineered for lasting commercial and residential use.
  • NOISE REDUCING DESIGN - Minimizes splashback noise with recommended elbow placement or optional flow deflector.
  • OPTIMIZED FLOW CONTROL - Handles up to 12.5 GPM with a recommended 7 GPM for peak efficiency and quiet drainage.
  • SPLASH FREE PERFORMANCE - Innovative splash guards ensure a dry, clean operation—no mess, no stress.
  • EFFORTLESS UNIVERSAL FIT - Seamlessly connects to multiple pipe sizes and tubing types for ultimate installation flexibility.

The MR. DRAIN AG100-001 Universal Air Gap offers a high-capacity 12.5 GPM flow rate with splash guards for dry, quiet operation. It fits 1/2-inch OD or 5/8-inch ID inlet tubing and connects securely to 1.5-inch or 2-inch standpipes, making it ideal for both residential and commercial water softener and filter systems. Lightweight and easy to install, it ensures reliable, mess-free drainage with noise reduction options.

Specifications

Size1 Count (Pack of 1)
MaterialPlastic
BrandAIR GAP INTERNATIONAL
ColorGray
Connector TypeElbow
Thread Size1/2"
Thread TypeNPT
Item Weight1.6 ounces
Number of Pieces1
ManufacturerAIR GAP INTERNATIONAL
UPC854628005356
Part NumberAG100-001
Package Dimensions5.91 x 5.04 x 1.93 inches
Country of OriginChina
Item model numberAG100-001
Is Discontinued By ManufacturerNo
StyleUniversal air gap
Item Package Quantity1
Flow Rate12.5 Gallons Per Minute
UsageCommercial/Residential
Batteries Included?No
Batteries Required?No

Have a Question? See What Others Asked

is this an approved air break
Do I glue the 1/2” cpvc drain line to the device or does it just sit in there by gravity?
What standard *specifically* is it listed to? My plumbing inspector is requiring me to find out.

Reviews

4.5

All from verified purchases

J**S

works and fits

Fits into my 1 1/2" laundry stack, allowing existing washer to drain and my newly added water softener to share that same pipe. Works and fits nicely.

A**R

We painted the Inlet Port along with the other pvc piping pieces. Looks great and works well.

I like how it will fit two different size piping. Works well for the water softener.

T**R

Peace of mind

I used this air gap to drain my water softener into the washing machine stand pipe. Fit my application perfectly and now I don't need to worry about my washing machine water backsiphoning into my softener.

K**O

Exactly As Described

Exactly as described. Fit perfectly.

J**2

Not great

Returned. Not worth $25. Same function can be achieved with $5 in parts at any hardware store.

J**Y

Four Stars

The old one gave up after 20 years and this replacement was an exact fit.

B**B

Bad design

I researched this part almost obsessively when I was planning out my water softener installation. It does not perform as the video shows it online, I promise you that.The issue is, as another reviewer noted, that water does slop out of the "little windows" when the softener puts out it's max flow during a recharge, which is far less than what this part claims to be rated at. For twenty something dollars on a part made of plastic, I expect it to be leak free. Not something you want in a finished space. I think the Mr. Drain forces the water to converge too sharply just below the windows and when the water gets bottlenecked, guess where it goes. Bummer. If anyone has a suggestion of a part that doesn't leak, please let me know.

D**T

Works sort of

Works just ok, water slops out of the air gap and gets all over the wall, and anything around it, this device does not help to maintain a controlled water flow, it looks good on line, but Its so sloppy and uncontrolled I could not use it. I am better off drilling a hole in a 2 x4 mounting it on the wall and putting the hose threw the 2x4 at an 1" 1/2" inches above the drain.

Common Questions

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

Universal Air Gap For Water Softeners And Filters With 1 | Desertcart Tunisia