Cole-Parmer 79600-04 Compact Vacuum/Pressure Diaphragm Pump
| Brand | Cole-Parmer |
|---|---|
| Origin | USA |
| Pump Type | Oil-Free Diaphragm |
| Model | 79600-04 |
| Max Vacuum | 5.9" Hg (149.9 Torr) |
| Max Pressure | 6.8 psi (0.47 bar) |
| Flow Rate | 0.04 CFM (1.0 L/min) |
| Operating Temp | 5–45°C |
| Lifetime | 15,000 hrs |
| Power Supply | 6 VDC |
| Noise Level | 65 dB(A) |
| Port | 4.5-mm barbed |
| Dimensions (L×W×H) | 1.5625" × 1.125" × 0.9375" |
| Weight | 0.45 lb |
Overview
The Cole-Parmer 79600-04 Compact Vacuum/Pressure Diaphragm Pump is an oil-free, DC-powered micro-diaphragm pump engineered for precision OEM integration and low-duty-cycle laboratory applications requiring modest vacuum or positive pressure generation. Based on reciprocating elastomeric diaphragm displacement, the pump operates via brushless DC motor actuation to drive a silicone diaphragm against a precision-machined valve seat—enabling bidirectional operation (vacuum or pressure) without lubricants or hydrocarbon contamination. Its design targets applications where footprint, electromagnetic compatibility, low heat dissipation, and chemical inertness are critical—such as gas sampling manifolds, microfluidic actuation, environmental sensor calibration, and portable analytical instrumentation. With a maximum vacuum of 5.9″ Hg (149.9 Torr) and pressure output up to 6.8 psi (0.47 bar), the 79600-04 serves reliably in non-aggressive gas handling environments where ultimate vacuum or high flow rates are not required.
Key Features
- Oil-free, maintenance-free operation eliminates risk of sample contamination and avoids scheduled oil changes or vapor backstreaming—critical for trace-gas analysis and cleanroom-adjacent use.
- Compact form factor (1.5625″ × 1.125″ × 0.9375″) enables direct PCB-mount or embedded integration into space-constrained instruments and handheld devices.
- Silicone diaphragm and molded elastomeric valves ensure consistent sealing performance across 15,000 operational hours under nominal load conditions.
- Brushless DC motor delivers stable speed control, low EMI signature, and extended service life compared to brushed alternatives—compatible with PWM or analog voltage regulation.
- 4.5-mm barbed outlet port accepts standard Tygon® or PharMed® tubing; no additional fittings required for rapid prototyping or field deployment.
- Rated for continuous operation within 5–45°C ambient temperature range; thermal shutdown protection prevents diaphragm deformation during sustained duty cycles.
Sample Compatibility & Compliance
The 79600-04 is validated for use with dry, non-corrosive, particle-free gases—including ambient air, nitrogen, argon, and CO₂ at atmospheric concentrations. It is not rated for solvent vapors, acidic or oxidizing gases (e.g., Cl₂, NOₓ), or particulate-laden streams. While not certified to ISO 8573-1 Class 0 for compressed air purity, its oil-free architecture meets Class 1 (≤0.01 mg/m³ oil content) requirements per ISO 8573-1:2010 when operated within specified parameters. The device complies with FCC Part 15 Subpart B (Class B digital device) and CE marking directives (2014/30/EU EMC Directive, 2011/65/EU RoHS). No UL or CSA safety certification is provided; users must validate electrical integration per IEC 61010-1 for laboratory equipment.
Software & Data Management
As a standalone electromechanical component, the 79600-04 does not include onboard firmware, communication interfaces (e.g., RS-485, USB), or embedded data logging. It functions as an analog actuator—controlled via regulated 6 VDC supply with optional PWM modulation (0–100% duty cycle, 1–10 kHz recommended). Integration into automated systems requires external current sensing, pressure/vacuum feedback (e.g., Honeywell ASDX series transducers), and host-level logic for closed-loop control. When deployed in GLP/GMP-regulated environments, system-level validation must include pump start/stop timing reproducibility, pressure ramp linearity, and diaphragm fatigue assessment per ASTM D3574 Annex A12 for elastomer endurance testing.
Applications
- Portable gas chromatography carrier gas delivery in field-deployable GC modules.
- Vacuum-assisted liquid aspiration in benchtop immunoassay wash stations.
- Low-pressure inflation of calibration bladders for differential pressure sensors (e.g., Validyne DP15).
- Air sampling pumps for PM₂.₅ and VOC monitoring systems compliant with EPA Method TO-15.
- Positive-pressure purging of optical enclosures and detector housings in spectroscopic instruments.
- OEM integration into point-of-care diagnostics platforms requiring silent, low-heat pneumatic actuation.
FAQ
Can the 79600-04 be used for vacuum filtration?
No. Its maximum vacuum (5.9″ Hg) and low flow rate (1.0 L/min) are insufficient for effective membrane filtration; use higher-capacity pumps such as the Cole-Parmer 07055-35 rotary vane model instead.
Is the pump compatible with 12 VDC input?
No. The 79600-04 is rated exclusively for 6 VDC operation. Applying 12 VDC will exceed motor insulation limits and void warranty.
What tubing materials are recommended for connection?
PharMed BPT or Tygon 2001 tubing (ID 4.5 mm) is preferred for chemical resistance and low permeability; avoid PVC or latex due to plasticizer migration and compression set.
Does the pump include thermal overload protection?
Yes. Internal thermistors trigger automatic shutdown if coil temperature exceeds 90°C; recovery occurs after passive cooling to <60°C.
Can it operate continuously for 24/7 duty cycles?
It is rated for 15,000 hours under intermittent duty (≤30% duty cycle). Continuous operation reduces expected lifetime significantly and is not recommended without active thermal management.
