3" Plastic Air Release / Vacuum Relief Vent - Simple Action
$84.64
3" simple action plastic air vent for irrigation mainlines. Automatically expels trapped air during system startup and admits air during shutdown to prevent vacuum damage to pipes and fittings. Seals at 5 PSI. Made of durable, non-corrosive reinforced polypropylene and polyamide (nylon).
| Size | 3" |
|---|---|
| Inlet Connection | 3" FNPT |
| Valve Action | Air Expulsion & Admission (Simple) |
| Sealing Pressure | 5 PSI |
| Material | Reinforced Polypropylene / Polyamide (Nylon) |
Availability:
In stock
SKU
RKAV300
Ships Same Day
All orders placed by 12 PM local warehouse time will ship the same day. Some exclusions apply. Delivery time may increase if item isn't available in closest warehouse.
Delivery time: 2-4 business days
RKAV300 - 3" Plastic Air Release / Vacuum Relief Vent
This 3" simple action plastic air vent automatically manages air in your irrigation mainline. During startup, it expels large volumes of trapped air so water can fill the pipe without air locks. During shutdown, it opens to admit air into the line, preventing the vacuum that causes pipe collapse, fitting damage, and water hammer. The float mechanism seals at just 5 PSI once water reaches the vent.
Key Features and Benefits
- Air expulsion on startup - Vents trapped air so the system fills completely and operates at full efficiency
- Vacuum relief on shutdown - Admits air to prevent pipe collapse, water hammer, and fitting damage
- Seals at 5 PSI - Float mechanism closes automatically once water reaches the vent
- Non-corrosive plastic construction - Reinforced polypropylene and polyamide (nylon) resists weather, UV, and chemical exposure
- 3" FNPT connection - Threads directly onto the mainline at high points
Installation
Install air vents at the highest points in your irrigation mainline where air naturally collects. Also install at the end of long runs and at any point where the pipe profile changes from uphill to downhill. The vent must be oriented upright (vertical) for the float mechanism to operate correctly.
Materials
- Body: Reinforced Polypropylene / Polyamide (Nylon)