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Industrial Automatic Air Vent
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MANUALS (1)
Product Highlights
Description
- Built-in shutoff valve for servicing without system shutdown.
- Built-in vacuum breaker.
- Removable float/valve assembly for easy servicing.
- Safety drain connection and vent cap with leakage guard.
- Brass shell construction.
- Internal parts made of corrosion-resistant and chemical-resistant materials for use with water systems containing propylene glycol, mineral oils, or petroleum-based oils. Replaces Hoffman # 79 or Dole # 75 Vents.
- Maintains quiet and efficient operation.
- Description: Industrial automatic air vent
- Application: Hydronics
- Connection Type : 3/4 in. male NPT pipe thread with 1/2 in. female NPT pipe thread
- Connection Size (in.): 3/4 in.
- Maximum Safe Operating Pressure (psi): 150 psi
- Maximum Safe Operating Pressure (kPa): 1034 kPa
- Maximum Operating Temperature (F): 250 F
- Maximum Operating Temperature (C): 120C
- Dimensions (in.): 5 in. long x 1 7/8 in. diameter
- Dimensions (mm): 128 mm long x 48 mm diameter
- Corrosion Resistant: Internal parts made of corrosion-resistant and chemical-resistant materials for use with hydronic systems that may contain concentrations of propylene or ethylene glycol, mineral oils, or petroleum-based oils.
Specs
| Application: | Main Vent |
|---|---|
| Size: | 3/4" x 1/2" |
| System Type: | Hydronic (Water) |
| Type: | Built-In Check |
| Max Pressure: | 150 psi |
| Min Temp (F): | 140°F |
| Temperature Range (F): | 140°F - 250°F |
| Body Pattern: | Straight |
| Mount: | Straight |
| Adjustability: | Non-Adjustable |
| Thread Type: | Male Female |
| Material: | Brass |
| Thread Size: | 1/2" 3/4" |
| Height: | 5" |
| Diameter (Inches): | 1-7/8" |
Questions?
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Many moving pieces to seal against leaks
Great product.
AAV worked perfectly exact replacement
fast & accurate
Great replacement for older style
Superior vent
Many moving pieces to seal against leaks
Happy
We like them!
Exactly what I needed!
I whould be glad to buy from Pex again
Product Q&A
3 QuestionsQ: Hi there I was wondering if valve releases hot air at specific set point or if hot air is released automatically with increase of temperature & pressure. Please clarify before purchase & let me know how you go.
Asked by Kev 12 years ago
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Verified Reply- Supplyhouse Staffyes this is an automatic air bleeder & It will let air back into the system as well.
Q: Hi, let me re-phrase my question. will this function as an automatic air vent, and as an automatic vacuum breaker at the same time? Thats what I need.I need somthing to let air in my tank when I am pumping from it, and something to let air out of the same tank as its filling.
Asked by salvador 14 years ago
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Verified Reply- PexSupply StaffThe manufacturer believes no, because you do not want to let air in the system from a vent.
Verified Reply- PexSupply StaffBut, there is a possibility that at the moment when the air vent is in the open position to release air and exactly at that time liquid is pumped out of the tank, then it is working as a vacuum breaker and the tank is filled also with air through the open air vent. So from that, we can say that it would not work reliably as a vacuum breaker.
Q: Hi, this might be exaactly what im looking for, so this is a combo unit, automatic air vent, and vacuum relief in one unit.
Asked by salvador 14 years ago
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I have used it strictly for the purpose of venting but it looks to be able to perform both functions. A call to the manufacturer is recommended for your specific use of the unit. Rich
I use it to keep my hydronic system pressurized and free of air. For that it works fine. Jay Clark Managing Partner Critical Infrastructure Mapping LLC - Geospatial Services
Yes, it is. I installed a tank less on-demand water heater in my home. Unfortunately, the bathrooms are 60 feet distant from the heater, so it took 4 or 5 minutes every morning to get hot water (which was very wasteful). To solve the problem, I installed a recirculation pump on a timer using a 1/2" Cu pipe bypass loop. But, it stopped working from time to time because air bubbles would accumulate in the recirc pump and it became ineffective. Once I installed this device at the HIGHEST POINT in the recirc loop, my troubles were over. When I brought the system back on line, the device automatically expelled air and has been working flawlessly ever since. Is this what you had in mind? Ask questions, and I'll try help. Chris Kreymann
No this is just air vent. Thanks
That is correct, when water is not raising the float (closing the valve), the valve is open to atmosphere and will allow air to flow into system. William M. Fields Sr.