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MANUALS (2)
Product Highlights
Description
Taco Air Scoops also provide an economic way to integrate air elimination by the connection of either a plain steel or diaphragm expansion tank.
Features:
- One-Piece, Cast Iron Construction
- Engineered Baffle to Separate Air from Water
- Never Requires Servicing
- Maximum Operating Pressure: 125 PSI (862kPa)
- Maximum Operating Temperature: 300 degrees F (135 degrees C)
- Recommended Flow Rate: 4 ft./sec.
- Maximum Flow Rate: 8 ft./sec.
- Connection Type: Threaded
- Body Type: Cast Iron
Specs
| Max Pressure (PSI): | 125 |
|---|---|
| Product Type: | Air Scoop |
| Size: | 2" |
| Material: | Cast Iron |
| Application: | Heating |
| Max Temp (F): | 300°F |
| Connection Type: | FNPT x FNPT |
| Connection Method: | Threaded |
Questions?
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Product Reviews
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Most Liked Negative Review
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Taco used to make great products, not any more!
no bells and whistles
Great product!
Poor Quality
Taco used to make great products, not any more!
Just as expected.
The air scoop is a perfect place to mount an expansion tank.
I would recommend this item
I would buy the product again
Quality product
Right on its mark!
Product Q&A
15 QuestionsQ: Will the air scoop reduce water flow (gpm)?
Asked by J 10 years ago
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Verified Reply- SupplyHouse StaffThe Taco 431 has a CV rating of 31.4.
Q: Will this work if my boiler is in the lowest part of the structure? I have vents on my baseboard upstairs, but always seem to capture air near the boiler. Also the supply pipe of my boiler goes on a vertical and the tees off to horizontal piping. Should I install two air scoops on each side of the tee?
Asked by dugkil 11 years ago
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Yes this will eliminate air near the boiler. The instructions with the air scoop will tell you that it must be mounted horizontally. The fitting on the bottom is designed for an expansion tank if your system is a pressurized system. It can be plugged if you have a tank elsewhere in the system. The fitting on top is designed for a vent. Personally, I would re-plumb the supply pipe in order to just use one air scoop, but two would work as well.
Q: Can the air scoop mounted vertically?
Asked by JA contracting 11 years ago
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No air scoops must be installed horizontal so that the air chamber is on
Q: can this be installed without an expansion tank as i already have another air scoop and tank on different part of system i need this to eliminate air in feed side of boiler ty
Asked by ken 12 years ago
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Verified Reply- SupplyHouse StaffYes, this air scoop may be installed without an expansion tank. This scoop has a top connection for a 1/8" Hy-vent. We offer this Hy-vent on our site here: http://www.supplyhouse.com/Taco-400-4-1-8-Hy-Vent
Q: I do not have room for 18" on either side of this item. What kind of impact on functionality would I experience if I deviate from this recommendation?
Asked by Scott 13 years ago
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Verified Reply- PexSupply StaffThe scoop should still be able to get some air out, but not as much as it would with the full 18". You could also consider an air eliminator in the style of a Taco 4900 or Spirotherm Spirovent. These use metal bearings rather than baffles to remove air bubbles, so there is no 18" straight-pipe requirement.
Probably minimal impact, but keep in mind that taco will problably not guarantee the component's performance. Put most of you're available straight pipe on the inlet side of the scoop though, and make sure to install a good quality auto air vent at the top with an inline ball or check valve for servicing without having to depressurize the entire system. Also make sure the system you are installing this in is a closed loop system because it is cast iron.
You'll probably get a lot of air knocking around your system which will cause poor circulation of your hot water
Q: with a 1-1/2 air scoop what size hy-vent would i need
Asked by Boilerboy 14 years ago
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Verified Reply- PexSupply StaffAny hy-vent with 1/8" threads will work. We'd recommend part 400-4.
1/8" auto bleeder...
Q: What is thread size for air vent at top of scoop for 1" air scoop
Asked by Larry 14 years ago
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Verified Reply- PexSupply StaffThe top of a Taco air scoop has 1/8" thread and will work with a part 400-4 vent.
I'm pretty sure it's 1/8 NPT. Sent from my iPhone
1/8 is vent size I think it is 1/2 in tap need A BUSHING
1/8" pipe thread....
Q: Can the air scoop be installed on the boiler (primary) loop ... or does it have to be installed on the secondary (lower velocity) loop?
Asked by RG 14 years ago
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The air scoop should be installed on the supply side directly off the boiler. You should also put the expansion tank and water fill in the bottom of the scoop. This will release the air that is inherently in the water supply as the boiler fills. This is the best location as this is the point of no pressure differential in the system and will limit the amount of air in the system.
I am in no way an expert on boiler systems. I installed mine in the retun of the primary loop with an automatic vent on top. This seemed to eleminate the air in the system that I could not get rid of by other means. Good luck RG.
Q: What's the difference between an air scoop with a hy-vent and a spirovent
Asked by 14 years ago
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Verified Reply- PexSupply StaffThey remove air from the system in different ways. Air scoops have specially-positioned blades that direct air bubbles to the air vent. They work best when straight piping runs precede the air scoop. Spirovent air eliminators use pall rings to "scrub" air from the system.
"The main difference between an air scoop with a hy-vent and a Spirovent is the air elimination process. The standard scoop/hyvent uses a different air elimination process than the Spirovent and other micro bubble type air scoops. Standard air scoops rely on the air rising, and being captured by a vent, whereas air scoops with micro bubble technology collect the micro bubbles in the air and convert them into macro bubbles that eventually float up to the venting area."
Q: Will an air scoop work on the negative pressure side of the pump?
Asked by Al 15 years ago
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Verified Reply- PexSupply StaffYou always want the air scoop on the suction side on your pump. That is the point of no pressure change.