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Air Vents

Armstrong air vents remove trapped air and non-condensable gases from steam and hydronic systems, improving heat transfer efficiency and preventing air binding. Available in thermostatic balanced-pressure designs (TV-2 for pressures to 125 psig, TS-2 to 50 psig) and compact float-type models (AV-11, AV-13) for hydronic heating, cooling, and liquid service to 150 psig.

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[D518800] 21-312VAR Cast Iron Air Vent (Screwed NPT, 1/2″ (15 mm), 173, 1/8")

21-312VAR Cast Iron Air Vent

$ 5,761.32
21-312AR Cast Iron Air Vent

21-312AR Cast Iron Air Vent

$ 5,761.32
21-AR Cast Iron Air Vent

21-AR Cast Iron Air Vent

$ 376.38
36-AV Stainless Steel Air Vent

36-AV Stainless Steel Air Vent

$ 14,452.50
33-AV Forged Steel Air Vent

33-AV Forged Steel Air Vent

$ 6,143.44
32-AV Forged Steel Air Vent

32-AV Forged Steel Air Vent

$ 5,699.82
22-AV Cast Iron Air Vent (Screwed NPT, 35, 1/4")

22-AV Cast Iron Air Vent

$ 2,529.70
13-AV Cast Iron Air Vent (Screwed NPT, 21, 1/4")

13-AV Cast Iron Air Vent

$ 4,251.70
11-AV Stainless Steel Air Vent (Screwed NPT, 1/2″ (15 mm), 178, 1/8")

11-AV Stainless Steel Air Vent

$ 1,422.70
6-AV Cast Iron Air Vent (1-1/2″ (40 mm), 22, 1/4")

6-AV Cast Iron Air Vent

$ 2,340.28
3-AV Cast Iron Air Vent (3/4″ (20 mm), 21, 1/4")

3-AV Cast Iron Air Vent

$ 1,066.82
2-AV Cast Iron Air Vent (1/2″ (15 mm), 27, 1/4")

2-AV Cast Iron Air Vent

$ 728.98
[C3510-1] 1-AV Cast Iron Air Vent (1/2″ (15 mm), 146, 1/8")

1-AV Cast Iron Air Vent

$ 235.34
[A9739] Thermostatic AV W/gkt

Thermostatic AV W/gkt

$ 175.48
[A8847E-2] Pop Drn 3/4 5#

Pop Drn 3/4 5#

$ 173.02
[A8847E-1] Pop Drn 3/4 9#

Pop Drn 3/4 9#

$ 173.02
[A8847-1] Pop Drn 1/2 5#

Pop Drn 1/2 5#

$ 105.78
[A10772] Air Vent Cap W/plug

Air Vent Cap W/plug

$ 163.18
[C3510-3] *11-AV Stainless Steel (Screwed NPT, 3/4″, 178, 1/8")

*11-AV Stainless Steel

$ 497.00
[D41790] AV-13 Air Vent

AV-13 Air Vent

$ 114.00