Pitot tube pumps are engineered for high pressure, low flow, and high head industrial applications where stable operation and careful pump selection are required.
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A pitot tube pump is a specialized pump based on centrifugal pump technology. The detailed pitot tube pump working principle uses a rotating casing and a stationary pitot tube to convert velocity energy into discharge pressure instead of using multiple impeller stages to build pressure.
Fluid rotates inside the casing, gains velocity, and is collected by the pitot tube. This velocity energy conversion creates pressure generation suitable for selected high pressure low flow pump applications.
Process liquid enters the rotating casing and begins moving with the casing wall.
Rotational motion increases fluid velocity and stores energy in the moving liquid.
The stationary pitot tube captures the high velocity liquid from the rotating casing.
The captured velocity energy is converted into discharge pressure for the process.
Pitot tube pumps are commonly evaluated for low flow high head duty in industrial process applications. They may be considered where difficult liquid conditions, process stability, or replacement evaluation make conventional pump selection more complex.
As an industrial high pressure pump option, final suitability depends on the actual duty point, fluid properties, suction conditions, material requirements, and operating environment.
Maximum flow and maximum head are not available at the same operating point. Each selection is confirmed with its own performance curve; request the data sheet, performance curve and dimensional drawing for your duty.
EHIK pitot tube pumps are built in seven series. The table lists the models, operating ranges and drive sizes in each series. Maximum flow and maximum head are not reached at the same point; each model is confirmed with its performance curve.
| Series | Models | Flow (m³/h) | Head (m) | Motor power (kW) | Bearing lubrication |
|---|---|---|---|---|---|
| 180 | 180S05s, 180S05, 180S07 | up to 5.5 | 40 – 170 | 1.5 – 4 | Grease |
| 260 | 260S06, 260S08, 260S10, 260GS06, 260GS08, 260GS10 | up to 12 | 80 – 420 | 3 – 22 | Grease |
| 280 | 280S07, 280S09, 280S11, 280D11 | up to 30 | 120 – 420 | 5.5 – 55 | Oil bath |
| 320 | 320S07, 320S10, 320S12, 320S15 | up to 30 | 120 – 450 | 11 – 55 | Oil bath |
| 390 | 390S07, 390S10, 390S12, 390S15 | up to 58 | 250 – 800 | 11 – 160 | Oil bath |
| 420 | 420S07, 420S10, 420S12, 420S15 | up to 52 | 230 – 1,000 | 22 – 110 | Oil bath |
| 450 | 450S07, 450S10, 450S12 | up to 20 | 300 – 460 | 37 – 45 | Oil bath |
Carbon steel, ductile iron, 304 or 316 stainless steel, depending on series and service. The pick-up tube is made from 17-4PH stainless steel.
Grease-lubricated bearings on the 180 and 260 series; oil-bath lubrication on the 280, 320, 390, 420 and 450 series.
Supplied as a bare-shaft pump or as a set with motor, coupling and baseplate, and as skids with seal support systems where the service requires.
EHIK pitot tube pumps use a mechanical seal developed and patented by EHIK: a single-face, balanced, cartridge design.
The single seal is in service on carbon black feedstock oil, fuel oil, binder and additive pumps, on sour-water pumps in oil and gas fields, on high-pressure cleaning pumps in paper mills and on boiler feed pumps at natural gas purification plants. Double seals with a flush system are supplied where the liquid or site standards require them.
Application data can be reviewed before final pump selection and quotation.
Duty point, fluid data, materials, and seal requirements can be evaluated for the process.
Existing applications can be reviewed through a multistage pump replacement evaluation or a Roto-Jet® replacement review.
Selection support is focused on industrial process conditions and high pressure low flow service.
The hydraulic assembly includes a rotating casing, a stationary pitot tube, and passages that collect and discharge the liquid. Their combined action accelerates the liquid and recovers velocity energy as pressure.
Evaluation is most relevant to selected industrial duties with relatively low flow and high pressure or head. The complete operating range, suction conditions, and fluid behavior must still be checked for the application.
Selection requires minimum, normal, and maximum flow where available, pressure or head, suction conditions, fluid composition, temperature, viscosity, specific gravity, gas or solids content, and operating schedule.
These items are reviewed against the fluid, temperature, pressure, site standards, and mechanical arrangement. For replacement work, provide the existing pump model, curve, motor data, nozzle details, base dimensions, and operating history when available.
Send your flow rate, pressure or head, fluid properties, temperature, viscosity, and current pump details for engineering review.