Description
AV813 Series — Cast Iron Air Eliminators
The AV813 Series Cast Iron Air Eliminators are engineered for the efficient removal of air and other gases from liquid systems without allowing the contained liquid to escape. These units utilize a stainless steel float connected to a precision valve assembly that automatically vents air from piping systems, vessels, and process lines. When no liquid is present inside the eliminator, the float stays in the lowered position, keeping the valve open to release accumulated gases. When liquid enters the body, the float rises and closes the valve, ensuring no liquid is discharged. This makes the AV813 Series highly effective in maintaining system performance and preventing air-related flow interruptions.
For Removing Air from Liquid Systems
Constructed with a durable cast iron body and stainless steel internal components, the AV813 Series provides long service life in industrial water and process applications. These units are equipped with an EPDM plug, with an optional Viton plug available for enhanced chemical resistance. Designed for dependable operation, the AV813 supports a maximum operating pressure of 150 PSIG and is well-suited for a variety of liquid handling and circulation systems.
Material Specification
- Body: Cast Iron
- Internals: Stainless Steel
- Plug: EPDM
- Optional Plug: Viton
Technical Specification
- Size: 3/4"
- Connection: Threaded, NPT
- Maximum Operating Pressure: 150 PSIG
Operating Principles
The AV813 Air Eliminator operates by allowing trapped air or gases within a liquid system to rise into the eliminator chamber. The stainless steel float mechanism senses the presence of air and opens the valve to vent it. Once liquid reaches the chamber, the float rises to close the valve, preventing liquid discharge. This fully automatic action provides continuous air removal, minimizes air binding, and ensures smooth operation of pumps and fluid systems.
AV813 Series Models
| Size / Connection (NPT) | Model Code | PMO (PSIG) | Weight (lbs) |
|---|---|---|---|
| 3/4" | AV813-13-N | 150 | 5 |
| 3/4" with Viton Plug | AV813-13-N-V | 150 | 5 |
Applications
- Automatic air removal in liquid piping systems
- Industrial process vessels
- Cooling water loops and circulation systems
- Pump systems to prevent air locking and cavitation
- General industrial and utility liquid handling applications
Cross Reference
Suitable alternative to cast iron automatic air eliminators used in hydronic systems, industrial liquid processing, cooling circuits, and utility water systems.