Air Valve (Kinetic/Double Act)
Air Valves from GM Dalui play a critical role in pipeline safety by exhausting bulk air during pipeline filling, admitting air during pipeline draining (to prevent vacuum collapse), and releasing accumulated air under operating pressure.
Introduction
An air valve from DALUI is designed to manage air within pipelines, addressing both air release and vacuum conditions. It efficiently releases trapped air, prevents vacuum formation, and allows for smooth fluid flow, enhancing system reliability and performance across diverse industrial applications.
Key Features
- Aerodynamic kinetic design prevents premature closure under high-velocity air discharge.
- Dual orifice configuration (small orifice for pressure air release, large orifice for bulk flow).
- Corrosion-resistant plastic or stainless steel float balls.
- Guaranteed sealing at very low operating pressures.
- Optional isolating valve integrated for inline maintenance.
Technical Specifications
| Design Feature | Standard Parameters / Range Options |
|---|---|
| Nominal Size Range | Up to 300 mm |
| Manufacturing Standards | IS 14845, EN 1074-4 |
| Material of Construction (MOC) |
|
| Pressure Ratings | 1.0 / 1.6 / 2.0 / 2.5 / Class 150# / 300# / 800# |
| Modes of Operation | Automatic Kinetic (Buoyancy operated) |
| End Connections | Flanged or Screwed BSP/NPT |
| Application Media | Water transmission main pipelines, high points in grids, irrigation networks. |
Application & Usage of Air Valve (Kinetic/Double Act)
Water Distribution Systems
Prevents air accumulation and vacuum conditions, ensuring smooth operation and reducing the risk of pipeline damage or flow disruption.
Sewage and Wastewater Systems
Manages air release and intake to maintain system efficiency and prevent pressure surges or blockages in sewage and wastewater pipelines.
Industrial Processes
Enhances the efficiency of fluid handling systems by removing trapped air, preventing flow disruptions, and ensuring reliable operation in various manufacturing and processing applications.
HVAC Systems
Regulates air in heating, ventilation, and air conditioning systems, optimizing performance and preventing air locks or pressure imbalances that can affect system efficiency.
Types of Air Valves
Kinetic Air Valve
Features high velocity air release and intake without premature closure, using buoyancy-operated floats to maintain pipeline hydraulic integrity.
Tamper Proof Air Valve
Equipped with protective outer cowls to prevent vandalism, unauthorized water tapping, or interference in public grids.
Double Orifice Air Valve
Combines a large orifice for bulk air handling during filling/draining and a small orifice for pressurized air release during operation.
Certificates & Inspection
All valves are subjected to rigorous hydrostatic shell and seat pressure testing in accordance with standard codes (e.g., API 598 / IS 14846) prior to delivery.
- Physical dimension and wall-thickness checks
- Hydrostatic seat and shell test validation
- Manufacturer Test Certificate (MTC) and third-party inspection (SGS, TUV, RINA, IRS etc.) available
- Epoxy powder coating inspection (DFT test)
Quality Assurance
GM Dalui & Sons Pvt. Ltd. is an ISO 9001:2015 certified manufacturer. Our commitment to safety, reliable sealing, and long service life is backed by rigorous material inspection, ultrasonic wall thickness checks, and design calculations.
We customize flow control systems to meet specific requirements for municipal waterworks, agricultural pumping wells, chemical distribution loops, and thermal power plant grids.