Masterflex B/T Fixed-Speed Peristaltic Pump Model 77111-07

Overview

The Masterflex^® B/T Fixed-Speed Peristaltic Pump Model 77111-07 is an industrial-grade peristaltic pumping system engineered for continuous, reliable fluid transfer in demanding laboratory, pilot-scale, and light production environments. Utilizing the fundamental principle of positive displacement via occlusion—where rotating rollers compress flexible tubing against a rigid housing—the pump delivers pulse-free, contamination-free flow without internal valves, seals, or wetted metal components. This design eliminates cross-contamination risk and ensures full fluid isolation, making it suitable for sterile, corrosive, abrasive, or shear-sensitive media. The unit operates at a fixed rotational speed of 271 rpm, delivering consistent volumetric throughput across defined tubing configurations. Its robust stainless-steel construction, IP55-rated enclosure, and integrated safety interlock align with engineering requirements for repeatable operation under regulated conditions.

Key Features

• Stainless-steel pump head and housing for chemical resistance, mechanical durability, and cleanability
• Integrated safety interlock switch that de-energizes the motor immediately upon opening the pump head cover—compliant with IEC 60204-1 machinery safety standards
• Reversible DC motor enabling bidirectional flow for priming, backflushing, and tubing cleaning protocols
• Optimized rotor and occlusion bed geometry ensuring precise, repeatable tubing loading and eliminating tube roll-out during operation
• Gentle peristaltic action suitable for shear-sensitive biologicals, cell suspensions, and high-viscosity fluids up to 10,000 cP
• IP55 ingress protection rating—enabling safe operation in humid or splash-prone lab and manufacturing settings
• Direct-rinse capability: housing and pump head surfaces tolerate water-based cleaning without disassembly
• ISO 9001:2000–certified manufacturing and CE-marked for conformity with EU electromagnetic compatibility (EMC) and low-voltage directives

Sample Compatibility & Compliance

The 77111-07 accommodates interchangeable B/T-series tubing—including standard Tygon^® LFL 91 (19.1 × 31.8 × 6.4 mm), B/T 87 (12.7 × 25.4 × 6.4 mm), and certified silicone variants such as Masterflex^® Platinum-Cured Silicone, Bio-Platinum^®, and Enhanced Bio-Platinum^® tubing. All compatible tubing meets USP Class VI, FDA 21 CFR 177.2600, and EP 3.1.9 biocompatibility requirements. The pump’s design supports cleaning-in-place (CIP) workflows and is routinely deployed in applications requiring adherence to GLP, GMP, and ISO 13485 frameworks. While the pump itself does not include data logging or audit trail functionality, its mechanical reliability and traceable component sourcing support integration into validated processes under FDA 21 CFR Part 11–governed environments when paired with external control systems.

Software & Data Management

This fixed-speed model operates independently of software control—designed for simplicity, operational stability, and minimal maintenance overhead. No embedded firmware, touchscreen interface, or digital communication ports (e.g., RS-232, USB, or Ethernet) are included. Flow rate is determined solely by tubing dimensions, rotational speed, and fluid rheology; users select tubing based on application-specific requirements for chemical compatibility, particle abrasion resistance, and extractables profile. For process documentation, external flow meters (e.g., Coriolis or ultrasonic) may be installed upstream or downstream to generate time-stamped, calibrated flow records compatible with LIMS or MES platforms. Calibration certificates for optional flow sensors can be supplied upon request to support IQ/OQ validation protocols.

Applications

• Continuous media feeding in bioreactors and fermentation systems
• Transfer of high-viscosity reagents (e.g., polymer solutions, hydrogels, slurries) in materials science labs
• Cleaning and sanitization loops in pharmaceutical CIP skids
• Accurate dosing of pH adjusters, antifoams, or nutrient feeds in controlled bioprocessing
• Lab-scale chromatography buffer delivery where solvent compatibility and bubble-free flow are critical
• Environmental testing labs handling aggressive solvents or wastewater samples
• Food & beverage R&D for gentle pumping of fruit pulps, dairy emulsions, or viscous sauces

FAQ

What tubing sizes are supported—and how do they affect flow rate?
The pump accepts B/T 87 (12.7 × 25.4 × 6.4 mm) and B/T 91 (19.1 × 31.8 × 6.4 mm) tubing. With B/T 87, nominal flow is 15 L/min; with B/T 91, it is 30.7 L/min—both measured using water at 20 °C and standard backpressure conditions.
Is this pump suitable for sterile applications?
Yes—when used with USP Class VI–certified tubing (e.g., Platinum-Cured Silicone) and validated cleaning procedures, it supports aseptic transfer in Grade C/D cleanrooms per ISO 14644-1.
Can the pump be integrated into a PLC-controlled system?
While the unit lacks native digital I/O, its motor circuit can be controlled via external relay or solid-state contactor triggered by PLC dry contacts—enabling start/stop and direction commands in automated sequences.
Does the pump require routine calibration?
No—peristaltic pumps are inherently volumetric devices; accuracy depends on tubing dimensional consistency and wear state. Users should replace tubing at scheduled intervals per manufacturer guidelines and verify flow empirically using gravimetric or volumetric methods during qualification.
What maintenance is required beyond tubing replacement?
Annual inspection of roller alignment, occlusion pressure, and motor brush condition (if applicable) is recommended. No lubrication of the drive train is required—gearbox and motor are sealed for life.