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Tianjin U-ideal Dual Orifice Air Relief Valve; Double Orifice Air Vent Valves
The Dual Orifice Air Relief Valve is designed to efficiently manage air flow during both filling and draining of pipelines. It ensures a large volume of air is released when the pipeline is being filled with water, and allows for significant air intake when the system is discharging. The valve also effectively releases bubbles that may form due to fluid dynamics, preventing potential blockages and ensuring smooth operation.
This type of valve helps prevent self-locking by continuously removing trapped air. Available in various configurations such as kinetic type with a single ball, dynamic type with a single ball, combined dual orifice design, and dual ball self-valve, it can be tailored to suit different installation requirements.
Applications of Tianjin U-ideal float-type air vents include hydronic heating systems, water service lines, storage tanks, centrifugal pumps, gas lines, and solvent filters. These valves operate automatically and are built with a simple yet robust design, making them reliable and requiring minimal maintenance.
Air vent valves are essential for maintaining pressure balance within a tank while preventing fluid from escaping through vent lines. They allow free flow of air or fluid in and out of a chamber until they close, typically triggered by a float mechanism. During refueling, these valves release air displaced by incoming fuel, and once the tank is full, they seal to prevent fuel loss. They also allow air back into the tank as fuel is consumed, preventing dangerous negative pressure and fuel starvation.
In addition, vent valves protect fuel tanks from damage caused by temperature-induced expansion and contraction of fuel. Some models even incorporate features to prevent fuel leakage when an aircraft is inverted.
Why remove air from a water system?
Trapped air in hot or chilled water systems can lead to noise, corrosion, and increased maintenance costs. Air locks can hinder system filling and pump priming, affect the accuracy of flow meters, and in extreme cases, cause equipment failure. Air and other non-condensable gases significantly reduce heat transfer efficiency—just 1 mm of air can act as a barrier equivalent to a 13-meter copper wall.
Air in any water system poses a threat to thermal efficiency, especially in chilled water systems that lack the natural deaeration process found in hot water systems.
Air Valves vs. Hydrants
A common misconception is that fire hydrants can replace combination air valves. However, this is not advisable. Fire hydrants require manual operation, leading to hidden maintenance costs. For example, a small town with 20 hydrants could spend more on labor than on automatic air valves. Manual air release cannot handle sudden flow changes, and hydrants do not provide the necessary vacuum-breaking function to prevent contamination during negative-pressure events.
Additionally, hydrants can pose safety risks due to accumulated pressure, which can exceed system ratings. In contrast, automatic air valves operate without user intervention and help maintain safe pressure levels. Hydrants are usually mounted at the sides of pipes, reducing their effectiveness as air-release devices, whereas automatic air valves are installed at the top (12 o'clock position) for optimal performance.
Tianjin U-ideal's combination air valves are among the most advanced available globally. Contact us via email for custom specifications and detailed calculations—we’d be happy to provide more information.
**Product Specifications:**
- **Origin**: Tianjin, China
- **Brand**: Tianjin U-ideal Instrument
- **Connection**: Flange or Thread
- **Export Markets**: Global
- **Packing**: Wooden Case or Carton
**About Us**
Our company specializes in manufacturing valves, flow meters, level gauges, and related equipment. With years of experience, we have built a strong reputation across North America, Europe, Australia, India, and beyond. Our team includes skilled professionals in sales, quality control, and technical support.
**Why Choose Us**
- **Rich Experience**: We have been in the machining industry for many years, serving customers worldwide.
- **Good Service**: We respond within 24 hours and offer customized solutions based on your drawings. Post-sale support is guaranteed.
- **Low Price**: Competitive pricing with discounts for bulk orders.
- **Perfect Quality**: Strict quality control from production to delivery. Over 80% of our staff hold bachelor’s or master’s degrees, ensuring high-quality standards.
**Contact Us**
If you have any questions or need further assistance, please feel free to contact us.
Tel: +86-22 88971536
Fax: +86-22 88971536