Sanotac VP Series High-Pressure, High-Viscosity Constant Flow Pump

Overview

The Sanotac VP Series High-Pressure, High-Viscosity Constant Flow Pump is an engineered precision fluid delivery system designed for demanding laboratory and pilot-scale applications requiring accurate, pulse-free metering of viscous, non-Newtonian, or shear-sensitive liquids. Based on a cam-driven dual-piston parallel architecture with floating plunger design, the pump delivers stable volumetric displacement across a wide viscosity range — up to 1000 cP — without reliance on feedback loops or external pressure compensation. Its operating principle adheres to positive displacement mechanics governed by geometric displacement volume and cam profile synchronization, ensuring intrinsic flow linearity and minimal compressibility-induced error. This makes it particularly suitable for applications where consistent mass or volume dosing is critical under elevated backpressure, including catalytic reaction feeding, supercritical fluid delivery, microreactor reagent introduction, and preparative chromatography mobile phase supply.

Key Features

• Cam-profile compensated dual-piston mechanism with active pulsation suppression, achieving pressure ripple ≤0.05 MPa and flow repeatability ≤0.1% RSD
• Three model variants (VP-0106, VP-0506, VP-1006) covering flow ranges from 0.01–10.00 mL/min to 0.01–100.00 mL/min, each optimized for specific viscosity envelopes
• Wetted path constructed from chemically inert, high-strength materials: 316L stainless steel housing, PTFE seals, ruby check valves, and ceramic plungers for abrasion resistance and long-term stability
• Integrated dual-mode delivery: selectable volumetric (mL/min) or gravimetric (g/min) control, enabling closed-loop integration with analytical balances via analog input (0–5 V / 4–20 mA)
• Configurable pressure safety limits (upper/lower bounds) with automatic shutdown and alarm logging compliant with GLP audit requirements
• Real-time graphical display of synchronized pressure and flow curves — exportable in native Excel format for traceability and post-run analysis
• Modular communication interface supporting RS-232, RS-485/422 (optional), and industry-standard Modbus RTU/ASCII protocols for seamless PLC or SCADA integration
• Expandable multi-pump coordination: single-pump standalone operation or 1:32 master-slave configuration for complex gradient programming in multi-stream synthesis systems

Sample Compatibility & Compliance

The VP Series accommodates a broad spectrum of challenging process fluids — including concentrated herbal extracts, polymer melts (e.g., silicone oil, glycerol), photoresists, catalyst slurries, and ionic liquid formulations — without degradation of accuracy or mechanical integrity. Its compatibility extends to solvents commonly used in pharmaceutical development (e.g., DMSO, DMF, ethylene glycol) and aggressive media encountered in petrochemical research (e.g., sulfonic acid derivatives, heavy naphthenic fractions). All firmware and data handling routines are structured to support 21 CFR Part 11-compliant electronic records when deployed with validated SanoFlu software configurations. The pump meets IEC 61000-6-3 (EMC emission) and IEC 61000-6-2 (immunity) standards; pressure containment complies with PED 2014/68/EU Category II requirements for equipment operating up to 6 MPa.

Software & Data Management

The SanoFlu Fluid Control Management System provides a deterministic, deterministic runtime environment for pump configuration, execution monitoring, and data archival. It supports user-defined calibration tables across the full flow range (0.01–100.00 mL/min), enabling field-traceable correction of system-specific compressibility and viscosity effects. Each operational session logs timestamped pressure/flow vectors, parameter sets (including port settings, protection thresholds, and program profiles), and event markers (start/stop, fault, recalibration). Export functions generate ISO 8601–formatted .xlsx files containing raw sensor data, metadata headers, and digital signatures — satisfying ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available) for regulated environments. Audit trails are immutable and time-stamped at firmware level.

Applications

• Catalytic evaluation reactors: precise co-feeding of catalyst precursors and substrates under high-pressure hydrogenation or oxidation conditions
• Microfluidic synthesis platforms: low-pulse delivery to chip-based reactors with sub-milliliter residence volumes
• Preparative HPLC and flash chromatography: stable eluent delivery for gradient separations involving viscous modifiers (e.g., triethylamine, TFA)
• Supercritical fluid processing (SFE, SFC): metering of CO₂-modifier mixtures (e.g., ethanol/CO₂) at pressures up to 6 MPa
• Electrochemical energy research: controlled injection of electrolyte formulations into flow cells for battery or fuel cell testing
• Phytochemical isolation workflows: automated fraction collection from centrifugal partition chromatography (CPC) systems using dense herbal extracts
• Materials science labs: dosing of curable resins, nanoparticle dispersions, and rheology modifiers in additive manufacturing feedstock preparation

FAQ

What viscosity range can the VP Series handle without performance degradation?
The VP-0106 variant supports fluids up to 1000 cP; VP-0506 and VP-1006 are rated for ≤100 cP. Performance validation includes Newtonian and pseudo-plastic behavior across this range under constant backpressure.
Is the pump compatible with FDA-regulated GMP environments?
Yes — when operated with validated SanoFlu software configurations and configured with audit trail logging enabled, it satisfies core elements of 21 CFR Part 11 for electronic records and signatures.
Can multiple VP pumps be synchronized for gradient elution?
Yes — the Modbus-enabled architecture supports master-slave coordination of up to 32 units, with programmable ramp rates, dwell times, and composition weighting per channel.
How is flow accuracy maintained across varying temperatures and pressures?
Accuracy is preserved through factory-calibrated cam geometry, temperature-compensated stepper motor control, and user-accessible multi-point flow correction tables that account for system compliance and fluid compressibility.
Does the pump support direct integration with load-cell-based mass flow control?
Yes — analog inputs (0–5 V / 4–20 mA) enable real-time feedback from balance systems, allowing dynamic adjustment of stroke volume to maintain target mass delivery rate.