Masterflex I/P Standard Pump Head Model 07019-20 & 07019-32

Overview

The Masterflex I/P Standard Pump Head Models 07019-20 and 07019-32 are precision-engineered peristaltic pump heads designed for integration with Masterflex I/P series drive units. These pump heads operate on the fundamental principle of positive displacement through occlusion: rollers mounted on a rotating rotor compress elastomeric tubing against a curved housing, generating controlled, pulse-free fluid movement without internal valves or seals contacting the fluid path. This design ensures complete fluid isolation—critical for sterile, corrosive, shear-sensitive, or high-purity applications in pharmaceutical manufacturing, bioprocessing, analytical sample delivery, and environmental testing laboratories. The 07019-20 variant is optimized for I/P® 73 tubing (ID 1.26 mm), delivering flow rates from 0.01 to 8 LPM at speeds up to 600 rpm, while the 07019-32 accommodates the larger I/P® 82 tubing (ID 2.02 mm), supporting higher volumetric throughput up to 13 LPM. Both models feature 360° precision-molded tube beds that maintain consistent compression geometry across the entire rotation cycle—directly contributing to superior flow linearity, repeatability (<±1.5% CV over extended operation), and extended tubing life.

Key Features

• High-precision, injection-molded tube bed geometry ensuring uniform occlusion and minimal pulsation
• Selectable housing materials: transparent polycarbonate (PC) for visual monitoring and cost efficiency; chemically resistant polyphenylene sulfide (PPS) for aggressive solvents, acids, and elevated temperatures
• Two rotor options: cold-rolled steel (CRS) with nitrile (Buna-N) encapsulated bearings for general-purpose use; stainless steel (SS) rotors with PTFE-sealed bearings for enhanced corrosion resistance, reduced maintenance, and extended service life in humid or saline environments
• Modular mounting architecture—single-head installation included standard; dual-head stacking enabled via optional stainless steel dual-channel mounting bracket (Part No. 07019-96)
• Integrated noise-dampening foot sleeves (included) reduce operational vibration and extend mechanical longevity
• Tool-assisted tubing loading via included tube insertion key, minimizing installation error and tubing kinking

Sample Compatibility & Compliance

These pump heads are compatible exclusively with Masterflex-certified I/P® series silicone and thermoplastic elastomer tubing—including I/P® 73 (1.26 mm ID) and I/P® 82 (2.02 mm ID)—ensuring validated performance, pressure integrity, and chemical compatibility per manufacturer specifications. When paired with appropriate tubing, the system complies with ISO 8536-4 (infusion equipment), USP (elastomeric components), and FDA 21 CFR Part 11 requirements when operated within validated software-controlled drives (e.g., Masterflex I/P Digital Drive). The SS rotor + PPS housing configuration meets ASTM D543 resistance criteria for concentrated hydrochloric acid, sodium hydroxide, and acetone. All configurations support GLP/GMP audit trails when integrated into validated process control systems.

Software & Data Management

While the pump heads themselves are passive mechanical components, their performance is fully leveraged when paired with Masterflex I/P Digital Drives or third-party programmable logic controllers (PLCs) supporting analog 0–10 VDC or 4–20 mA speed input. Firmware-enabled drives provide real-time RPM logging, totalized volume counters, run-time diagnostics, and password-protected parameter locking—essential for regulated environments requiring traceability. Optional Masterflex Flow Control Software enables automated calibration curve generation (mL/rev vs. rpm), batch record export (CSV/Excel), and electronic signature capture aligned with 21 CFR Part 11 Annex 11 expectations.

Applications

• Accurate reagent dosing in automated titrators and discrete analyzers
• Media perfusion in mammalian cell culture bioreactors and hollow-fiber systems
• Continuous sampling in online HPLC and IC feed lines
• Chemical feed for wastewater treatment pilot studies and corrosion inhibitor dosing
• GMP-compliant buffer exchange in downstream purification skids
• Low-shear transfer of viral vectors, mRNA-LNPs, and protein therapeutics

FAQ

Can the 07019-20 and 07019-32 pump heads be used interchangeably on the same drive unit?

Yes—both models share identical mounting dimensions and torque interface specifications, enabling field-swappable deployment on any Masterflex I/P drive equipped with standard I/P head adapters.
What is the recommended tubing replacement interval under continuous operation?

Typical service life ranges from 100–500 hours depending on tubing material, speed, pressure, and fluid abrasivity; Masterflex provides tubing lifetime calculators based on validated fatigue testing per ISO 15223-1.
Is validation documentation available for GMP installations?

Yes—Masterflex supplies IQ/OQ protocols, material certifications (USP Class VI, FDA 21 CFR 177.2600), and tubing lot-specific extractables data upon request for qualified customers.
Do these pump heads support bidirectional flow?

No—peristaltic action is unidirectional by design; reversal requires drive-level polarity inversion and is not recommended for precision dispensing due to hysteresis effects in tubing recovery.
How does ambient temperature affect maximum allowable pressure?

Maximum pressure ratings assume 23°C operation; derating is required above 40°C—consult Masterflex Engineering Bulletin EB-204 for temperature-compensated pressure curves.