Masterflex B/T Pneumatic Peristaltic Pump Model 77111-80

Overview

The Masterflex^® B/T Pneumatic Peristaltic Pump Model 77111-80 is an intrinsically safe, air-driven peristaltic pumping system engineered for continuous, contamination-free fluid transfer in high-risk industrial and regulated laboratory environments. Unlike electrically actuated alternatives, this pump eliminates spark generation by using compressed air as its sole motive force—making it suitable for use in hazardous locations where flammable vapors, combustible dusts, or corrosive atmospheres are present. Its operation relies on the classic peristaltic principle: rollers mounted on a rotating rotor compress flexible tubing against a rigid track, creating a sealed, pulsation-dampened flow path. This design ensures zero contact between the drive mechanism and the fluid, preserving sample integrity and eliminating cross-contamination risks. The pump is constructed with stainless steel housing and precision-machined components to withstand repeated cleaning, chemical exposure, and mechanical stress under ISO 9001:2000–certified manufacturing controls.

Key Features

• Intrinsically safe pneumatic drive compliant with ATEX Zone 2 (EEx II 3Gc IIC T6) and NEC Class I, Division 2, Groups A, B, C, D, T6—validated for use in explosive gas atmospheres.
• Stainless steel frame and corrosion-resistant hardware ensure long-term durability in aggressive chemical handling applications including organic solvents, inks, acids, and caustics.
• Digital speed control interface enables precise adjustment from 35 to 321 rpm, supporting reproducible volumetric delivery across variable viscosity ranges up to 10,000 cP.
• Integrated safety interlock automatically de-energizes the air supply when the pump head cover is opened—preventing accidental actuation during tubing replacement or maintenance.
• IP56-rated enclosure provides protection against dust ingress and powerful water jets, permitting direct rinse-down with water after operation—critical for pharmaceutical cleanroom and food-grade sanitation protocols.
• Modular pump head accepts multiple Masterflex tubing configurations, including Tygon^® LFL #87 and #91, as well as high-purity silicone, platinum-cured silicone, and reinforced bioprocess-grade tubing sets.

Sample Compatibility & Compliance

The Model 77111-80 accommodates a broad spectrum of fluids without risk of metal leaching or seal degradation, thanks to its tube-only wetted-path architecture. Compatible tubing options include USP Class VI-certified platinum-cured silicone for biopharmaceutical processing, FDA-compliant Tygon LFL formulations for solvent resistance, and enhanced bio-silicone variants rated for extended duty cycles under GMP conditions. The system meets CE marking requirements under the Machinery Directive 2006/42/EC and Electromagnetic Compatibility Directive 2014/30/EU. Its ATEX certification confirms conformity with EN 60079-0 and EN 60079-15 for non-sparking equipment in gas group IIC environments. Documentation packages support 21 CFR Part 11–compliant validation efforts, including IQ/OQ protocols, calibration traceability, and audit-ready maintenance logs.

Software & Data Management

While the 77111-80 operates as a stand-alone analog-controlled unit, it integrates seamlessly into supervisory control systems via optional 4–20 mA or 0–10 V analog input/output modules (sold separately). These interfaces enable remote speed setpoint modulation, real-time flow monitoring (when paired with inline flow sensors), and PLC-based batch sequencing. All firmware and configuration data adhere to GLP/GMP documentation standards, with timestamped event logging—including interlock triggers, runtime hours, and pressure fault alerts—stored locally for regulatory review. Optional digital controllers provide password-protected parameter locking, multi-step ramp profiles, and USB export of operational history for quality assurance reporting.

Applications

This pump serves critical roles in process-intensive settings requiring both safety and precision: transfer of flammable solvents in paint formulation lines; metered dosing of catalysts in fine chemical synthesis; sterile media feeding in single-use bioreactors; ink circulation in high-resolution printing systems; and recirculation of aggressive etchants in semiconductor wafer cleaning stations. Its compatibility with USP Class VI and EP 3.2.1–compliant tubing makes it deployable in clinical diagnostics instrumentation and API purification skids where extractables and leachables must be rigorously controlled. Field-proven performance extends to wastewater treatment facilities managing sulfide-laden effluents and offshore oil platforms handling hydrocarbon emulsions.

FAQ

What certifications does the Model 77111-80 hold for hazardous area use?

It carries ATEX Zone 2 (EEx II 3Gc IIC T6), CUL Listed for Class I, Division 2, Groups A–D, and CE marking per applicable EU directives.
Can this pump handle abrasive slurries or particulate-laden fluids?

Not recommended—peristaltic pumps require homogeneous, non-abrasive fluids to maintain tubing service life and flow accuracy. Suspended solids exceeding 50 µm may accelerate wear.
Is tubing replacement tool-free?

Yes—the quick-release pump head design allows full access to tubing without tools, supporting rapid changeover between chemically incompatible processes.
What is the minimum operating air pressure required?

2.7 bar (40 psi) is the threshold for stable operation; optimal performance at maximum flow rates requires 6.8 bar (100 psi) at 340 L/min free-air delivery.
Does Cole-Parmer provide validation documentation for GMP environments?

Yes—IQ/OQ templates, material declarations, and calibration certificates are available upon request to support FDA, EMA, and PMDA submissions.