Process Pumps · Positive Displacement
High Pressure Piston Pumps for Viscous and Particle-Laden Products
Thick, particle-laden products moved at a constant rate and up to 600 bar, from tank to dryer nozzle or filler.
Y-HM200 high pressure piston pump: multi-piston stainless steel pump head, touch-panel control.
600 bar
Maximum working pressure
100,000+ cP
High-viscosity series
50 mm
Particle passage, product kept whole
6 models
From pilot unit to large industrial frame
What Is a High Pressure Piston Pump?
A positive displacement pump whose flow is set by the stroke, not by the product.
A high pressure piston pump is a positive displacement pump: on every stroke a piston draws a fixed volume of product into its cylinder and pushes it out against the line pressure. Because the flow is set by the stroke and not by the product, it stays constant as viscosity rises, which is exactly where centrifugal and many rotary pumps lose output.
Protrus piston pumps run at very low speed through a gear reducer, so paste, concentrates, creams and slurries are transferred and dosed without being overheated or sheared, and whole particles reach the next step intact. For droplet size reduction rather than transfer, see our high pressure homogenizers.
Piston Pump Range
Six frame sizes in one range. Each pump is configured for the flow rate, working pressure, valve design and product-contact materials of your process, so two pumps of the same frame can be built very differently.
How a High Pressure Piston Pump Works
The motor turns a gear reducer and crankshaft at very low speed. On the suction stroke the piston pulls back, the suction valve opens and product flows in from the feed tank under gravity or a small head, so no separate feed pump is needed.
On the discharge stroke the suction valve closes, the discharge valve opens and the product is pushed into the line at the pressure the nozzle, dryer or filler requires. Two, three or five pistons work out of phase to give a smooth, low-pulsation flow.
Feed tank, pump head with suction and discharge valves, gear-reducer drive and nozzle, dryer or filler at up to 600 bar.
Key Features
Choosing the Right Piston Pump
1. Viscosity: at pumping temperature.
2. Pressure: below the pump rating.
3. Flow: L/h or m³/h with a margin.
4. Particles: smaller than the valve passage.
5. Temperature: sets seals and materials.
6. Shear: low speed for delicate products.
7. Hygiene: CIP/SIP for food and pharma.
Applications of High Pressure Piston Pumps
Wherever a product is both thick and has to reach high pressure, a piston pump is the reliable choice: feeding spray dryer nozzles for milk, protein and detergent powders, transferring tomato paste and margarine, and dosing sauces, pastes and creams on filling lines.
Dairy
Food & beverage
Chemical & petrochemical
Biotechnology
Personal care
Pharmaceutical
Frequently Asked Questions About High Pressure Piston Pumps
Have a question about viscosity, particles or pressure? Ask our process engineers.
Get a Quote
Find the Right Piston Pump with Protrus
Send us your product, viscosity, temperature, particle size, working pressure and flow rate, and we will recommend the model, piston arrangement, valves and materials for your line.
Prefer email? info@protrus.com