Automatic Air Vent Valve NPT Thread – Dual Outlet Water Tank
Automatic Air Vent Valve NPT Thread – Dual Outlet Water Tank
Automatic Air Vent Valve with NPT Thread & Dual Venting Outlets
Keep your water tanks, irrigation systems, and plumbing lines running smoothly with this heavy-duty Automatic Air Vent Valve. Engineered with dual venting outlets and a high-flow aerodynamic chamber, it efficiently purges trapped air during filling and draining — maintaining consistent pressure and preventing airlock in low-pressure systems.
Key Features
- High-Flow Air Passage Design: A straight-through aerodynamic chamber with large inlet and outlet ports enables maximum airflow capacity, making it ideal for water tanks and agricultural or industrial applications.
- Dual Venting Outlets: Features both a large air vent for rapid bulk air release and an automatic micro-vent for continuous small-volume discharge — ensuring stable system operation and controlled pressure management.
- Integrated Anti-Burst Float: The built-in float incorporates an anti-burst design that guards against damage from high-velocity airflow and prevents premature closure of the vent port, boosting overall reliability.
- Low-Pressure Sealing Performance: Operates effectively at a low-pressure seal of 0.2 bar (1.5 psi), delivering exceptional sealing performance that minimizes leakage and maintains consistent function over time.
- Durable PA (Polyamide) Construction: Made from high-quality polyamide material, this valve offers outstanding resistance to acids and alkalis, ensuring a long service life across agricultural irrigation, outdoor gardening, and water storage setups.
- NPT Thread Connection: Standard NPT thread sizing (1/2", 3/4", or 1") for quick, secure installation on most tanks and plumbing systems.
Specifications
- Part Name: Automatic Air Vent Valve
- Material: PA (Polyamide / Nylon)
- Thread Type: NPT
- Available Sizes: 1/2", 3/4", 1"
- Available Colors: Black, Orange
- Operating Pressure: Low Pressure (seal at 0.2 bar / 1.5 psi)
- Country of Origin: Made in Mainland China
Package Contents
- 1 × Automatic Air Vent Valve
Common Applications
- Agricultural drip irrigation systems
- Outdoor and garden watering setups
- Water storage tanks and reservoirs
- Industrial low-pressure fluid systems
Note: Colors shown may vary slightly from actual product due to monitor brightness and lighting conditions. Please allow for minor measurement tolerances.
For guidance on safe plumbing practices and water system standards, visit the U.S. EPA WaterSense Program for water efficiency and system management resources.
Frequently Asked Questions
Q: What thread type does this automatic air vent valve use?
A: This automatic air vent valve uses a standard NPT (National Pipe Thread) connection, available in 1/2", 3/4", and 1" sizes, making it compatible with most water tank and irrigation plumbing systems in North America.
Q: What is the difference between the two venting outlets on this valve?
A: The dual venting outlet design includes a large air vent for rapid, high-volume air release during system filling or draining, and a secondary automatic micro-vent for continuous small-volume air discharge during normal operation — together ensuring stable pressure and airlock-free performance.
Q: What material is this air vent valve made from, and how durable is it?
A: This valve is constructed from high-quality PA (polyamide/nylon), which offers excellent resistance to acids, alkalis, and general corrosion. It is well-suited for agricultural irrigation, garden watering, and outdoor water storage applications requiring long-term durability.
Q: What is the minimum operating pressure for this valve?
A: This automatic air vent valve is designed for low-pressure systems, with an effective sealing performance starting at 0.2 bar (approximately 1.5 psi), making it suitable for gravity-fed tanks and low-pressure irrigation setups.