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Air Valve (168)
Heating Specialty (2)
Orifice (2)
Solar Part (1)

System Type

Hydronic (Water) (80)
Steam (56)

Size

1/8" (82)
1/4" (29)
3/8" (3)
1/2" (33)
3/4" (28)
1" (1)
4" (1)

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$1 to $5 (6)
$5 to $10 (12)
$10 to $15 (25)
$15 to $20 (28)
$20 to $25 (16)
$25 to $30 (8)
$30 to $35 (3)
$35 to $40 (9)
$40 to $45 (12)

Air Valves

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Product Image of #675 1/8" NPT Auto Vent
$33.33 each
In Stock
Get 7 by Tue, Jun 16
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Product Image of #5, 1/4" Straight Air Valve
$15.41 each
In Stock
Get 3 by Tue, Jun 16
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Product Image of #43-M 1/4" Vertical Radiator Steam Vent (Straight Shank)
$24.08 each
In Stock
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Product Image of 77, 1/8" Straight Water Vent Valve
77, 1/8" Straight Water Vent Valve
SKU: 401497
Hoffman
SKU: 401497
Brand: Hoffman
(1)
$55.57 each
In Stock
Get 2 by Wed, Jun 17
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Product Image of #D, 1/4" Straight Air Valve
$16.97 each
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Product Image of Adjustable All in One Orifice
$13.20 each
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Product Image of #4, 1/4" Straight Air Valve
$16.80 each
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Product Image of #6, 1/4" Straight Air Valve
$19.18 each
In Stock
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Product Image of #10 Manual Coin Vent
#10 Manual Coin Vent
SKU: 10-JACOBUS
Jacobus - Maid O Mist
SKU: 10-JACOBUS
(1)
$14.88 each
In Stock
Get 4 by Tue, Jun 16
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Product Image of #7A Connector for Safe Waste
$15.57 each
In Stock
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Product Image of #66, 1/8" Auto-Vent
#66, 1/8" Auto-Vent
SKU: 66-JACOBUS
Jacobus - Maid O Mist
SKU: 66-JACOBUS
(1)
$25.19 each
In Stock
Get 7 by Tue, Jun 16
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Product Image of #9AS Shortstop Automatic Shutoff Valve
$27.26 each
In Stock
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Product Image of 1/2" Vari-Vent
1/2" Vari-Vent
SKU: BJ-2VV
Barnes & Jones
SKU: BJ-2VV
$133.54 each
In Stock
Get 2 by Tue, Jun 16
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Product Image of #72, 1/8" Auto-Vent (1-1/4" x 1/2")
$22.82 each
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Product Image of 1/2" Quick Change Service Check Valve
1/2" Quick Change Service Check Valve
SKU: 140-470
Amtrol
SKU: 140-470
Brand: Amtrol
$15.13 each
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Get it by Wed, Jul 15 - Wed, Aug 12
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Product Image of #77, 1/8" Auto-Vent W/ 1/8" Fem. Side Opening
$51.62 each
In Stock
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Product Image of 1/2" Big Mouth Crossover Trap
$128.09 each
In Stock
Get 2 by Wed, Jun 17
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Product Image of #37 1/8" Auto Vent (Bottom Connection)
$45.54 each
In Stock
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Product Image of #27 1/8" Auto Vent (Side Connection)
$63.70 each
In Stock
Get 3 by Fri, Jun 19 - Mon, Jun 22
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Product Image of 1/4" NPT Male Vent Cap Adapter
1/4" NPT Male Vent Cap Adapter
SKU: NA10204
Caleffi
SKU: NA10204
Brand: Caleffi
$20.13 each
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Product Image of 71A, 1/8" Straight Steam Convector Air Valve
$108.08 each
In Stock
Get 2 by Fri, Jun 19 - Mon, Jun 22
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Product Image of 1/8" SV Non-Vacuum Non-Adjustable Float-Type Steam Air Vents
$27.09 each
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Product Image of #95 1/8" Pushbutton Manual Vent
$19.99 each
In Stock
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Product Image of 1/2" Solar Air Vent
1/2" Solar Air Vent
SKU: 251004A
Caleffi
SKU: 251004A
Brand: Caleffi
$149.88 each
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Product Image of 1/8" Air Vent, Float Type w/ Check Valve
$17.40 each
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Product Image of 3, 1/8" x 1/4" Angle Steam Air Line Valve
$252.39 each
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Get it by Wed, Jul 15 - Wed, Aug 12
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Product Image of #67AS Auto Vent with Automatic Shortstop Shutoff
$41.22 each
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Product Image of 4" FLGD Flow Measurement Valve, CSM81
4" FLGD Flow Measurement Valve, CSM81
SKU: 0036535
Watts
SKU: 0036535
Brand: Watts
$3,266.31 each
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Get it by Wed, Jul 15 - Wed, Aug 12
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Product Image of 3/4" Big Mouth Crossover Trap
3/4" Big Mouth Crossover Trap
SKU: BJ-3CR
Barnes & Jones
SKU: BJ-3CR
$127.95 each
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Get it by Wed, Jul 15 - Wed, Aug 12
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Get it by Wed, Jul 15 - Wed, Aug 12
Resources
FAQs, Manuals & Videos
Articles
More About Air Valves
The function of the radiator air valve or air vent is to provide a means for air to be driven out of the radiator as steam enters. A quality radiator air valve will provide quieter and faster heating radiators. Air valves are differentiated by orifice size, and selecting a radiator valve is determined by the radiator's distance from the boiler. A main vent with a large orifice should be installed closest to the boiler. A radiator located on the 2nd floor of a home should have an air valve with a smaller orifice. Air valves are available in straight or angle configurations and can be serviced simply by unscrewing the vent cap.

We offer a wide selection of Taco, Watts, Hoffman, Gorton, Varivalve, and Jacobus air valves suitable for your heating system.
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