9390N Automatic Air Vent
Ensure optimal system performance with the 9390N Automatic Air Vent, designed for efficient air removal in hydronic heating, chilled water, and industrial piping systems. Its durable brass body resists corrosion while providing reliable, maintenance-free operation—no electrical connections required.
Key Features & Benefits
✔ Industrial Brass Construction – Long-lasting durability for HVAC, boiler, and process piping systems
✔ 150 PSI CWP Rating – Handles high-pressure applications in commercial and industrial settings
✔ Automatic Operation – Continuously vents trapped air to prevent efficiency loss and system damage
✔ High-Temp Capable (Up to 230°F) – Supports hot water systems (anti-boiling additives required above 212°F)
✔ Easy Installation – Standard MNPT (ASME B1.20.1 NPT) threads ensure a secure, leak-proof fit
Technical Specifications
- Body Material: Brass
- Connections: MNPT (ASME B1.20.1)
- Max Pressure: 150 PSI CWP
- Temperature Range: 32°F to 230°F (0°C to 110°C)
- Operation: Fully automatic, no power needed
Ideal For:
- Commercial boiler systems
- Hydronic heating & chilled water loops
- Industrial process piping
- High-efficiency HVAC installations
Upgrade your system with the 9390N Automatic Air Vent—order today for hassle-free air elimination!
Why Choose This Air Vent?
- Corrosion-resistant brass for extended service life
- No maintenance—set it and forget it
- Universal compatibility with water/glycol mixes
Dimension, Weight
| Size | N | A [in] | D [in] | H [in] | Weight [lb] |
|---|---|---|---|---|---|
| 1/4 | 1/4-18 NPT | 1.82 | 0.47 | 2.83 | 0.34 |
| 3/8 | 3/8-18 NPT | 1.82 | 0.47 | 2.83 | 0.34 |
| 1/2 | 1/2-14 NPT | 1.82 | 0.61 | 2.97 | 0.34 |
Material
| # | Part | Material | Specification |
|---|---|---|---|
| 1 | Body | Brass | ASTM B283 C37700 |
| 2 | Floating | Polypropylene1 | - |
| 3 | Cursor | Plastic | - |
| 4 | Spring | Stainless Steel | AISI 304 |
| 5 | Shutter | Plastic | - |
| 6 | Shutter gasket | EPDM Perox | - |
| 7 | Vent | Brass | ASTM B283 C37700 |
| 8 | Cursor mount | Stainless Steel | - |
| 9 | O-ring | EPDM Perox | - |
| 10 | Tap | Brass | ASTM B283 C37700 |
| 11 | Vent cap | Polypropylene1 | - |
1 For high temperature applications