The 248 ejector from Valfonta is a static mixing and pumping device designed to transport liquids, gases, or solids using the kinetic energy of a motive fluid (usually water, steam, or air).
Its main competitive advantage is the total absence of moving parts. Without impellers, pistons, or mechanical seals, it offers fault-free operation, minimal noise level, and zero maintenance. It is the ideal solution for installations where access is difficult or where traditional mechanical pumping is complex, being widely used in chemical, paper, marine (bilge pumps), and water treatment industries.
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Flow Range: Mixing capacity from 1,200 l/h up to 72,000 l/h (depending on size and pressure).
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Pressure and Temperature: Robust design to withstand up to 16 barg at a maximum temperature of 200°C.
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Body Materials: Available in Carbon Steel (WCB), Bronze (RG10) and Stainless Steel (A351 CF3M).
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Nozzle Materials: Critical part made of Stainless Steel (CF3M), Bronze (RG10) or Monel for maximum erosion resistance.
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Connections: Standard with DIN PN16 flanges (other options upon request).
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Suction Capacity:
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Submerged: Up to 2 meters (with cold water).
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Not submerged: Up to 6.5 meters suction height.
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The operation of the 248 ejector is based on the Venturi principle, using the energy of a pressurized fluid to create a vacuum:
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Driving Force: The motive fluid (steam, water, or air) enters at high speed through the conical nozzle.
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Suction: As the fluid accelerates, a low-pressure area is created in the mixing chamber, generating a suction effect, drawing in the product (liquid, gas, or solid) from the suction line.
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Discharge: Both fluids mix and regain pressure in the diffuser, being expelled towards the discharge line.
The versatility of this equipment allows for multiple installation configurations according to use:
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Pump Priming: Installed in the suction pipe of a non-self-priming centrifugal pump. The ejector uses an auxiliary driving force to create vacuum and fill the pump with liquid before starting.
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Water Treatment and Mixing: Installed in bypass or in-line. It uses the force of a main pump to suck additives from an auxiliary tank and homogeneously mix them with the main flow.
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Solid Transport: Ideal for pumping and mixing powder or granular solids (cement, salt, gels) by diluting them in a motive liquid.
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Installation: Since it does not vibrate or have moving parts, no complex supports are required. It is recommended to install shut-off valves on all three lines (motive, suction, and discharge) for easier control.
