PRODUCT NAME: AIR VALVES SUPPLIER: KRISHNA INDUSTRIES LOCATION: AHMEDABAD, GUJARAT, INDIA MINIMUM ORDER QUANTITY (MOQ): 10 NOS
──────────────────────────────────────── LONG INTRODUCTION ────────────────────────────────────────
Air valves are a critical yet often underestimated component in fluid handling systems, particularly in water supply pipelines, irrigation networks, industrial process lines, and municipal infrastructure. Their primary function is to manage air accumulation and vacuum formation within pipelines, ensuring smooth flow, protecting pipelines from damage, and maintaining overall system efficiency. At Krishna Industries, we manufacture and supply high-quality air valves engineered specifically for Indian operating conditions, pressure ranges, water quality, and installation practices.
In long-distance pipelines, trapped air pockets can significantly reduce flow capacity, increase energy consumption, cause water hammer, and lead to premature pipeline failure. A properly selected and installed air valve automatically releases trapped air during pipeline filling, admits air during pipeline draining, and expels air during normal operation. This makes air valves indispensable in water transmission systems, sewage pipelines, fire protection lines, cooling water systems, and industrial fluid transfer networks.
Krishna Industries is a trusted supplier and manufacturer of air release valves, double orifice air valves, kinetic air valves, and combination air valves for Indian industries and infrastructure projects. Our air valves are designed with robust materials, precision-machined internals, corrosion-resistant coatings, and field-proven sealing mechanisms to ensure reliable long-term performance even in demanding conditions.
As an Ahmedabad-based valve supplier in Gujarat, India, Krishna Industries understands the practical challenges faced by Indian buyers—variable water quality, fluctuating pressures, outdoor installations, and long operational cycles. Our air valves are developed to meet these real-world requirements, offering dependable performance in municipal water supply, irrigation pipelines, industrial plants, power projects, and building services.
This product page provides comprehensive technical and commercial information on air valves, including construction details, working principles, applications, advantages, installation guidelines, maintenance considerations, and frequently asked questions. The content is structured to assist engineers, contractors, procurement teams, consultants, and plant operators in selecting the correct air valve for their specific application.
Related product keywords included in this introduction and throughout the content: air release valve, double orifice air valve, kinetic air valve, combination air valve, pipeline air valve
──────────────────────────────────────── WHAT IS AN AIR VALVE ────────────────────────────────────────
An air valve is an automatic valve installed at strategic points along a pipeline to manage the presence of air. Air naturally enters pipelines during filling, draining, or due to dissolved gases released from the fluid. If not properly controlled, this air can accumulate at high points, reducing effective cross-sectional area, causing flow restriction, and creating pressure surges.
Air valves perform three essential functions: 1. Release large volumes of air during pipeline filling 2. Release small air pockets during normal operation 3. Admit air into the pipeline during draining or sudden pressure drops to prevent vacuum conditions
Depending on the design and function, air valves are classified into different types, each suited for specific operating conditions.
──────────────────────────────────────── TYPES OF AIR VALVES SUPPLIED BY KRISHNA INDUSTRIES ────────────────────────────────────────
Krishna Industries supplies multiple configurations of air valves to suit diverse Indian applications.
Single Orifice Air Release Valve This type is designed to release small quantities of accumulated air under pressurized conditions. It is commonly used in systems where air generation is minimal but continuous air release is required to maintain efficiency.
Double Orifice Air Valve Also known as a combination air valve, this type combines a large orifice for high-volume air discharge and intake with a small orifice for continuous air release under pressure. It is widely used in water transmission mains and irrigation pipelines.
Kinetic Air Valve Kinetic air valves are designed to handle large volumes of air during pipeline filling and emptying. They operate quickly and are suitable for long pipelines with high flow rates.
Combination Air Valve Combination air valves integrate kinetic and air release functions into a single body, offering comprehensive air management. These are the most commonly specified air valves in modern pipeline design.
──────────────────────────────────────── CONSTRUCTION AND MATERIALS ────────────────────────────────────────
Air valves manufactured and supplied by Krishna Industries are built for durability, performance, and long service life. Typical construction features include:
Valve Body Manufactured from cast iron, ductile iron, or fabricated steel depending on application and pressure rating. Bodies are epoxy-coated for corrosion resistance, making them suitable for outdoor and buried installations.
Float Mechanism High-density polymer or stainless steel floats ensure reliable operation even in fluctuating pressure conditions. The float rises and falls based on air accumulation inside the valve.
Sealing System Precision-engineered elastomer seals provide tight shut-off, preventing leakage and water loss during normal operation.
Orifice Assembly Carefully sized orifices ensure optimal air release and intake without causing water discharge or operational instability.
Fasteners Stainless steel fasteners are used to enhance corrosion resistance and extend service life.
──────────────────────────────────────── WORKING PRINCIPLE OF AIR VALVES ────────────────────────────────────────
The operation of an air valve is automatic and does not require external power or manual intervention.
During Pipeline Filling As the pipeline is filled with water, large volumes of air are displaced. The air valve remains open, allowing air to escape freely. Once water reaches the valve, the float rises and seals the orifice, preventing water discharge.
During Normal Operation Small air bubbles accumulate at high points in the pipeline. The air release mechanism opens intermittently to vent this air without releasing water.
During Pipeline Draining or Pressure Drop When the pipeline is drained or pressure drops suddenly, a vacuum can form. The air valve opens to admit air, preventing pipe collapse or structural damage.
──────────────────────────────────────── APPLICATIONS OF AIR VALVES ────────────────────────────────────────
Air valves supplied by Krishna Industries are widely used across Indian industries and infrastructure sectors.
Municipal Water Supply Used in transmission mains, distribution networks, and pumping stations to improve efficiency and protect pipelines.
Irrigation Systems Essential in agricultural irrigation pipelines, lift irrigation schemes, and canal-based distribution systems.
Industrial Pipelines Applied in process water, cooling water, and utility pipelines in industries such as power plants, refineries, chemical plants, and steel plants.
Sewage and Effluent Lines Prevent air locking and vacuum formation in sewage rising mains and effluent pipelines.
Fire Protection Systems Installed in large fire water networks to ensure immediate water availability and pressure stability.
Building Services Used in high-rise water supply systems to maintain smooth flow and reduce noise and vibration.
──────────────────────────────────────── ADVANTAGES OF USING AIR VALVES ────────────────────────────────────────
Installing the correct air valve offers multiple technical and economic benefits.
Improved Flow Efficiency Elimination of air pockets ensures full pipe bore utilization.
Protection Against Water Hammer Controlled air release and intake reduce pressure surges.
Extended Pipeline Life Prevention of vacuum conditions and structural stress enhances pipeline durability.
Reduced Energy Consumption Smooth flow reduces pumping power requirements.
Air valves should be installed at pipeline high points, long upward slopes, pump discharge lines, and strategic intervals as recommended by pipeline design standards.
Ensure proper vertical installation Provide isolation valve below air valve Install with adequate clearance for maintenance Protect from flooding and debris ingress
──────────────────────────────────────── MAINTENANCE AND SERVICE ────────────────────────────────────────
Air valves require minimal maintenance but periodic inspection is recommended.
Check float movement Inspect seals for wear Clean internal components if required Verify tightness of fasteners
──────────────────────────────────────── MOQ AND COMMERCIAL TERMS ────────────────────────────────────────
Minimum Order Quantity: 10 Nos Packaging: Industrial-grade packing suitable for road transport Supply Scope: Valve with standard accessories Market Focus: Indian domestic supply
1. What is the main purpose of an air valve in a pipeline An air valve releases trapped air and admits air during draining to protect pipelines and ensure smooth flow.
2. Which type of air valve is most commonly used Combination air valves are the most widely used due to their dual functionality.
3. Where should air valves be installed At high points, pump discharge lines, and long pipeline slopes.
4. Are air valves required in irrigation pipelines Yes, they significantly improve efficiency and reduce pipeline damage.
5. What materials are used in air valves Typically cast iron or ductile iron bodies with corrosion-resistant coatings.
6. Can air valves be used for sewage applications Yes, with appropriate design and material selection.
7. Do air valves require power to operate No, they are fully automatic.
8. What pressure ratings are available Air valves can be supplied in multiple pressure classes as per requirement.
9. How often should air valves be maintained Periodic inspection once or twice a year is generally sufficient.
10. Can Krishna Industries supply customized air valves Yes, customization is available for size, pressure, and application.
Air valves play a vital role in protecting pipelines, improving efficiency, and ensuring long-term operational reliability. Selecting the right air valve from a dependable supplier is essential for successful pipeline performance. Krishna Industries, based in Ahmedabad, Gujarat, India, offers robust, application-tested air valves tailored for Indian buyers. With a focus on quality, reliability, and practical engineering, we support infrastructure, industrial, and agricultural projects across India with dependable air valve solutions.
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