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1-1/2" Inline Air Separator
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112097 has been discontinued
Discontinued December 4, 2025
This product was discontinued by the manufacturer.
MANUALS (3)
Product Highlights
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FNPT x FNPT Connection
Cast Iron
1-1/2"
175 MAX PSI
300°F Max Temp
Description
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The B&G In-Line Air Separator is specifically designed to efficiently separate air from circulating water in hydronic heating and cooling systems to assure quiet operation.
Operating Data
Maximum working pressure 175 psig (1,207 kPa)
Maximum operating temperature 300+ F (149+ C)
Construction
One piece cast iron
Sizes - 1" through 3"
Body Type: Cast Iron
Connection Type: Threaded
Operating Data
Maximum working pressure 175 psig (1,207 kPa)
Maximum operating temperature 300+ F (149+ C)
Construction
One piece cast iron
Sizes - 1" through 3"
Body Type: Cast Iron
Connection Type: Threaded
Specs
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| Max Pressure (PSI): | 175 |
|---|---|
| Product Type: | Air Eliminator |
| Size: | 1-1/2" |
| Material: | Cast Iron |
| Application: | Heating |
| Max Temp (F): | 300°F |
| Connection Type: | FNPT x FNPT |
| Connection Method: | Threaded |
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Product Reviews
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100% would recommend this product
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Showing 1-1 of 1 reviews
A fine way to keep the air out.
I suggest to read carefully the usage guide PDF file for this product. I have a large overhead expansion tank and a Weil McLain CGi7. I added the IAS to the horizontal supply for my convector zone. The original installer did not use an IAS and the air would migrate out of the tank by mid-season. My convectors used to get air locked frequently and after installing the IAS so far this season the air is staying in the tank. I chose the larger (1 1/2") IAS to get the 3/4" air port instead of a 1/8" port only useful for bleeders. The 3/4" line runs at an upward slope all the way to the tank. This is important to do. So far, I like the performance.
Steve
Pittsburgh, PA
15 years ago
Verified Buyer
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Product Q&A
2 Questions2 Questions
Q: Should this be installed on the supply or return side of the system when using an older steel (non-bladder) type expansion tank? I have 18" of pipe after the circulator pump on the supply side or a shorter, 12", run of pipe on the return. Is there a preference or significant difference to the installed location?
Asked by Eric 15 years ago
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Verified Reply- PexSupply StaffNormally you would like to place the unit on the supply side, before your circulator.
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Q: Does this need to be installed in a certain lenght of straight pipe?
Asked by 16 years ago
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Verified Reply- PexSupply StaffYes, this air separator requires 18" of straight pipe before it is installed in the line. It is necessary to have a smooth/straight flow so the air bubbles in the system have time to rise towards the top of the pipe and flow through the air separator properly.
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