Air Ejector and Gas Ejector Manufacturer — Primetech, Chennai
Priming Air Ejectors
Primetech priming air ejectors use compressed air as the motive fluid to evacuate air from centrifugal pump suction lines and casings, enabling reliable self-priming before pump start. Used extensively in power plants for condensate and boiler feed pump priming, chemical plants, water treatment facilities and marine applications. The ejector creates a low-pressure zone in the suction line, allowing liquid to rise and fill the pump casing. Automatic pressure-switch cutout stops the ejector once the pump is fully primed and develops discharge pressure. Available in carbon steel, stainless steel and bronze for various service conditions.
Ventilation Ejectors and Air Movers
Ventilation ejectors and air movers use compressed air to create airflow in confined spaces, tanks, vessels, engine rooms and underground enclosures where fans cannot be installed. Used in shipboard machinery spaces, industrial tanks and vessels during inspection and maintenance, and process areas requiring supplementary ventilation. Primetech ventilation ejectors require only a compressed air supply and have no rotating parts, making them intrinsically safe for use in hazardous area classification zones. Available in mild steel, stainless steel and flame-proof aluminium construction.
Gas Jet Ejectors
Gas jet ejectors use high-pressure process gas or nitrogen as the motive fluid to compress, transfer or evacuate lower-pressure gas streams without mechanical or rotating parts. Applications include vacuum generation in chemical plants, flash gas recovery in oil and gas processing, gas recirculation in fertiliser plants and ammonia synthesis loops, and gas mixing in process pipelines. Primetech designs gas ejectors to API 560 and customer specifications in carbon steel, stainless steel and alloy construction to handle corrosive, flammable and toxic gas streams safely.
Air & Gas Ejectors
Compressed Air Driven Systems
Simple, reliable ejectors driven by compressed air or process gas — for priming, ventilation, vacuum generation, and gas transfer without mechanical moving parts.
Air Jet Ejectors
Compressed Air Ejectors
Air jet ejectors use a high-velocity stream of compressed air to move or remove another fluid — typically air or gas — from a system. High-velocity air through a narrow nozzle creates a low-pressure region that draws in surrounding fluid. The mixed streams exit through a diffuser, creating suction without any moving mechanical parts.
Commonly used in vacuum systems, ventilation, and industrial processes because they are simple in design, reliable, and require very little maintenance.
Priming Ejector
Priming air ejectors evacuate air and non-condensable gases from a pump's suction line and casing before startup. Compressed air creates a low-pressure zone, drawing air out of the suction piping and allowing liquid to fill in — ensuring the pump is fully charged with fluid before it starts.
Especially useful with centrifugal pumps installed above the liquid level or where manual priming would be impractical. Once sufficient liquid fills the pump and discharge pressure develops, pressure switches automatically shut off the ejector, completing the priming cycle.
Applications
Power plants — condensate and boiler feed pump priming
Chemical & petrochemical industries
Water and wastewater treatment
Industrial process applications
Marine and offshore applications
Ventilation Ejector / Air Mover
A ventilation air ejector improves air circulation by using compressed air to extract unwanted air from enclosed areas. When compressed air flows through a narrow nozzle, it produces a suction effect that pulls in surrounding air from the space that needs ventilation. The combined airflow is released through an outlet duct.
Commonly used in industrial environments, engine rooms, and confined spaces where proper airflow is difficult to achieve without conventional fans.
Applications
Confined spaces — tanks, vessels, silos, and underground enclosures
Engine rooms and machinery spaces — extracting heat, fumes, and exhaust
Industrial ventilation — factories and process areas
Gas Jet Ejectors
Gas Jet Ejectors
A gas jet ejector uses the energy of a high-pressure gas stream (motive fluid) to entrain and transport a lower-pressure gas to a higher pressure — without any mechanical or rotating parts. Also known as jet pumps, eductors, or Venturi ejectors.