Warren Rupp UL-Certified Pneumatic Diaphragm Pump
| Brand | Warren Rupp |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | UL Series |
| Pricing | Upon Request |
Overview
The Warren Rupp UL-Certified Pneumatic Diaphragm Pump is an intrinsically safe, air-powered positive displacement pump engineered for reliable transfer of hazardous, abrasive, shear-sensitive, or high-viscosity fluids in regulated life science and pharmaceutical environments. Operating on the reciprocating diaphragm principle—where compressed air alternately pressurizes opposite sides of dual elastomeric diaphragms—the pump achieves self-priming capability (up to 7.6 m suction lift), dry-run tolerance, and flow rate modulation via air supply pressure adjustment (typically 0.2–0.7 MPa). Its design eliminates mechanical seals, shafts, and dynamic wetted bearings, thereby removing primary failure points associated with leakage, contamination, or lubricant ingress—critical for GLP-compliant labs, cleanroom fluid handling, and low-temperature cryogenic circulation support systems where integrity of thermal media (e.g., ethylene glycol/water mixtures) must be preserved.
Key Features
- UL 79 Listed Design: Certified by Underwriters Laboratories for safe handling of Class I, Division 1 flammable liquids (e.g., solvents, alcohols, acetone) in laboratory and pilot-scale process environments.
- Explosion-Proof Construction: Compliant with ATEX Directive 2014/34/EU (Category 2G), CSA C22.2 No. 60079-0, and IECEx standards; fully groundable aluminum housing prevents electrostatic discharge accumulation.
- Wetted Material Options: Standard configurations feature FDA-compliant Nitrile (Buna-N) or pure PTFE diaphragms, ball valves, and seats—validated for USP Class VI biocompatibility and USDA acceptance in food/pharma contact applications.
- Maintenance-Free Dry-Run Operation: Capable of indefinite operation without fluid present—eliminating risk of overheating or diaphragm damage during system priming or intermittent flow conditions.
- Variable Flow & Head Control: Flow rates scalable from 0.5 to 120 L/min (depending on model and air pressure); maximum head up to 84 m water column with consistent performance across viscosity ranges up to 20,000 cP.
Sample Compatibility & Compliance
The UL Series accommodates heterogeneous, particulate-laden, and temperature-sensitive media—including cryogenic heat transfer fluids used in low-temperature circulators—without degradation of flow stability or material integrity. All wetted components meet FDA 21 CFR §177.2600 (elastomers) and EU Regulation (EC) No. 1935/2004. The pump supports compliance-driven workflows requiring audit-ready documentation: material traceability certificates, UL Component Recognition files (E154150), and third-party test reports for CE marking (EN 60079-0, EN 60079-15). It is routinely deployed in ISO 13485-certified device manufacturing, ASTM D471 fluid compatibility testing, and USP analytical instrument qualification protocols.
Software & Data Management
While inherently analog in actuation (air-driven), the UL Series integrates seamlessly into automated lab infrastructure via optional pneumatic control modules compatible with 4–20 mA or 0–10 VDC signal inputs for closed-loop flow regulation. When paired with Warren Rupp’s certified air supply conditioning units (with integrated pressure transducers and digital controllers), real-time operational data—including air inlet pressure, cycle count, and runtime hours—can be logged via Modbus RTU or Ethernet/IP to LIMS or SCADA platforms. Full electronic audit trails align with FDA 21 CFR Part 11 requirements when configured with validated firmware and user-access controls.
Applications
- Recirculation of thermal fluids in cryogenic constant temperature circulators operating between –80 °C and +200 °C.
- Transfer of sterile buffers, cell culture media, or solvent-based reagents in aseptic filling suites and bioprocessing labs.
- Delivery of abrasive slurries (e.g., silica suspensions, magnetic nanoparticle dispersions) in materials characterization workflows.
- Safe dispensing of flammable organic solvents during HPLC mobile phase preparation or extraction protocol automation.
- Backup dosing in environmental chamber coolant loops where electrical pump failure poses fire or thermal runaway risks.
FAQ
Is this pump suitable for continuous operation in a Class 100 cleanroom environment?
Yes—when specified with electropolished aluminum housing and PTFE-wetted components, it meets ISO 14644-1 particle emission limits and supports VHP-compatible surface decontamination.
Can it handle cryogenic fluids below –40 °C?
Standard Nitrile configurations are rated down to –20 °C; for sub-zero operation, PTFE diaphragms and Viton® backup rings (optional) extend functional range to –65 °C with verified cycle life per ASTM F1369.
Does the UL certification cover both pump body and air motor assembly?
Yes—UL 79 listing applies to the complete assembled unit, including air distribution manifold, valve train, and diaphragm cavity, as tested under worst-case fault conditions.
What maintenance intervals are recommended under GMP conditions?
Per Warren Rupp’s PQ-validated maintenance schedule: diaphragm inspection every 6 months or 2,000 operating hours; full rebuild kit replacement every 24 months or 10,000 cycles—documented in equipment logbooks per Annex 15.
