Description

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Our Positive Displacement Pump System is an engineered industrial solution moving a fixed liquid volume per cycle. It forces a constant volumetric output regardless of pressure, making it the industry standard for precision, heavy-duty, and high-viscosity media handling.

Technical Specifications

Parameter	Specification Range
Flow Rate	0.1 m³/h to 500 m³/h
Pressure Range	Up to 350 bar
Viscosity Range	1 cP to 1,000,000 cP
Temperature Range	-40°C to +350°C
Drive Power	0.37 kW to 315 kW
Materials of Construction	SS304, SS316, Cast Iron, Duplex Steel, Hastelloy

Product Features

High Accuracy Metering: Delivers predictable, repeatable volumetric displacement essential for critical chemical dosing and batching applications.

Exceptional Viscosity Performance: Efficiently moves heavy, shear-sensitive, and ultra-viscous fluids up to 1,000,000 cP without flow degradation.

High-Pressure Capability: Generates immense discharge pressures reliably, overcoming heavy line resistances and long-distance friction losses.

Superior Self-Priming: Features high suction lift characteristics that clear air from suction lines rapidly during startup phases.

Constant Flow Stability: Maintains a steady, non-pulsating or predictable flow curve even when system backpressure varies.

Low Maintenance Design: Built with robust tolerances and minimal wearing components to ensure long operational lifecycles and reduced total cost of ownership.

System Components

Primary PD Pump: The core volumetric liquid mover (Gear, Screw, Lobe, Piston, or Diaphragm).

Electric Motor: High-efficiency industrial motors (IE3/IE4) rated for continuous duty.

Drive Mechanism: Helical gearboxes, belt drives, or direct couplings matched to torque requirements.

Control Panel: Pre-wired enclosure housing VFDs, starters, and safety relays.

Instrumentation & Sensors: Pressure transducers, temperature gauges, and flow monitors for real-time telemetry.

Valves & Safety Equipment: Pressure relief valves, bypass loops, check valves, and isolation block valves.

Piping & Skid Base: Interconnecting carbon or stainless steel piping mounted securely on a heavy-duty structural steel baseplate.

Applications

Chemical & Petrochemical Processing: Safely handles corrosive acids, hazardous solvents, heavy polymers, and chemical additives.

Oil & Gas Sector: Used extensively for crude oil transfer, pipeline transport, slop oil recovery, and high-pressure chemical injection skids.

Food & Beverage Production: Transfers viscous food stuffs including syrups, molasses, chocolate, batter, and dairy concentrates under strict hygienic standards.

Pharmaceutical Manufacturing: Precision-meters active pharmaceutical ingredients (APIs), excipients, creams, and sterile intermediate fluids.

Water & Wastewater Treatment: Doses viscous polymers, flocculents, and heavy industrial sludges efficiently.

Customization Options

Custom Metallurgy: Specialized wetted materials and exotic alloys matched to highly corrosive or erosive chemical profiles.

Performance Tuning: Custom gear ratios, variable displacement configurations, and specialized sealing arrangements.

Hazardous Area Compliance: Explosion-proof certifications including ATEX, IECEx, and Class I Div 1/2 electrical specs.

Skid Configuration: Compact footprints, vertical/horizontal orientations, and mobile cart-mounted packages.

Control Integration: Custom PLC mapping and communication protocols (Modbus, Profibus, Ethernet/IP) to align with existing plant SCADA.

FAQ

Q: What is a positive displacement pump system?

A: A positive displacement pump system is an integrated industrial unit that moves fluid by trapping a fixed volume and forcing it into the discharge piping, ensuring a consistent volumetric output regardless of system pressure changes.

Q: How does a positive displacement pump work?

A: It works through mechanical cycles-either via rotating elements (like gears or screws) or reciprocating components (like pistons or diaphragms)-that isolate a specific pocket of fluid from the inlet port and transport it directly to the discharge port.

Q: When should I choose a PD pump system over a centrifugal pump?

A: You should select a PD pump system when handling high-viscosity fluids, when your process demands high discharge pressure, or when you require precise, repeatable flow metering independent of system resistance.

Q: Do positive displacement pumps require pressure relief valves?

A: Yes. Because PD pumps continue to push fluid against any downstream blockage, a closed discharge valve can cause dangerous pressure spikes. A pressure relief valve or bypass loop is mandatory for safe operation.

Q: Can positive displacement pumps handle abrasive slurries?

A: Yes, certain designs-such as progressing cavity pumps, specific lobe pumps with hardened linings, or air-operated diaphragms-are specifically engineered to handle abrasive particles and heavy slurries.

Q: How do I select the right PD pump system size for my facility?

A: Proper sizing requires precise data regarding your fluid's viscosity, required flow rate, minimum and maximum operating pressures, fluid temperature, and chemical compatibility requirements.

Q: What maintenance is most critical for a positive displacement pump system?

A: Ensuring proper lubrication of bearings and gearboxes, monitoring mechanical seal wear, maintaining correct pipe alignment, and avoiding dry running are critical for maximum operational lifespan.

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Positive Displacement Pump System