Honeywell AP400 Catalog Page
Air Vents and Eliminators
MaxiVent™–Air Vent for heating and cooling systems
The Maxivent features a low profile, fit anywhere solid brass body
and cover, and a high temperature polypropylene float.
Application: Residential or commercial heating and cooling systems
Dimensions, Approximate:
29 mm diameter)
Materials (Body): Brass
Maximum Operating Temperature: 240 F (115 C)
Maximum Operating Pressure: 150 psi (1034 kPa)
Weight
Product Number Connection Type Connection Size
FV147/U Male NPT 1/8 in. 0.12 b 0.06 kg 1/8 in. NPT Air Vent for heating and cooling systems
FV147A/U Male NPT 1/4 in. 0.12 b 0.06 kg 1/4 in. NPT Air Vent for heating and cooling systems
Descriptionlb kg
2 in. high x 1 5/32 in. diameter (51 mm high x
AP400 Air Purger
Air Purgers provide efficient separation of air and water in
hydronic heating systems. Heavy duty cast bronze construction
with tappings for expansion tank and automatic air vent
mountings. Removes entrapped air with internal baffle design
through continuous recirculation of heating system water with use
of air vent. Improves system efficiency, reduces noise and helps
extend component life.
• Heavy Duty cast iron construction
• 1 inch, 1 1/4 and 1 1/2 inch models (inlet and outlet)
• 1/2 inch bottom tapping for expansion tank mount
• 1/8 inch top tapping for air vent mount
• Directional flow arrow for correct installation
Application: Closed heating systems
Dimensions (approximate):
(152 mm long x 95 mm high x 60 mm wide)
Materials (Body): Cast Iron
6 in. long x 3-3/4 in. high x 2-3/8 in. wide
Maximum Operating Temperature: 275 F (135 C)
Maximum Operating Pressure: 125 psi (862 kPa)
Product Number
AP400/U Female NPT 1 in. Bottom: 1/2 in.; Top: 1/8 in. 4.2 lb 1.9 kg 1 in. NPT Air Purger for closed heating systems
AP401/U Female NPT 1 1/4 in. Bottom: 1/2 in.; Top: 1/8 in. 3.8 lb 1.7 kg 1 1/4 in. NPT Air Purger for closed heating systems
AP402/U Female NPT 1 1/2 in. Bottom: 1/2 in.; Top: 1/8 in. 8.6 lb 3.9 kg 1 1/2 in. NPT Air Purger for closed heating systems
222 customer.honeywell.com 70-6910
Connection
Type
Pipe
Size Connection Size
Weight
Descriptionlb kg
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