Jihepu SHZ-95B Vertical Circulating Water Vacuum Pump

Overview

The Jihepu SHZ-95B Vertical Circulating Water Vacuum Pump is an oil-free, water-sealed vacuum source engineered for reliable, low-maintenance operation in academic laboratories, R&D centers, and pilot-scale production environments. It operates on the principle of water-ring vacuum generation—where a rotating impeller creates a liquid ring inside the pump chamber, forming sealed cavities that expand and contract to draw in and exhaust gas. This mechanism enables stable vacuum generation without lubricating oils, eliminating risk of hydrocarbon contamination and simplifying maintenance. Designed for continuous duty cycles, the SHZ-95B delivers an ultimate vacuum of 0.098 mbar (9.8 Pa) and a nominal pumping speed of 10 L/min at standard conditions (20 °C, 101.3 kPa), making it suitable for moderate-vacuum applications including rotary evaporation, vacuum filtration, freeze-drying pre-treatment, solvent recovery, and degassing of reaction mixtures.

Key Features

• Vertical architecture optimizes footprint efficiency—ideal for benchtop or floor-mounted installation where space is constrained.
• Five independently controllable vacuum ports allow simultaneous connection of multiple apparatuses (e.g., parallel rotary evaporators, filtration manifolds, or multi-neck reactors); optional five-way manifold enables synchronized high-capacity evacuation.
• Corrosion-resistant construction: PVC water reservoir, SUS-grade stainless steel pump body and impeller, copper ejectors, and polypropylene (PP) fluid-handling components ensure compatibility with mildly acidic, basic, or organic vapors.
• FKM fluoroelastomer seals provide enhanced chemical resistance and thermal stability compared to standard nitrile or EPDM elastomers—critical for extended service life when handling aggressive solvents or condensable vapors.
• 370 W induction motor supplied by an OEM partner meeting IEC 60034 efficiency standards; thermally protected and rated for continuous operation under load.
• Integrated locking casters facilitate repositioning between fume hoods, gloveboxes, or process stations without requiring disassembly or recalibration.
• Self-contained 50 L water reservoir supports extended runtime; cooling circuit flow rate of 80 L/min maintains thermal equilibrium during prolonged use.

Sample Compatibility & Compliance

The SHZ-95B is compatible with non-explosive, non-toxic, and non-particulate-laden gases and vapors commonly encountered in synthetic chemistry, pharmaceutical development, and materials science workflows. While not rated for Class I Div 1 hazardous locations, its oil-free design inherently reduces ignition risk relative to mechanical vacuum pumps. The unit complies with general laboratory safety requirements per GB/T 2893.1 (safety color coding) and meets electromagnetic compatibility (EMC) criteria outlined in GB/T 18268.1–2010 (IEC 61326-1). For GLP/GMP-aligned environments, users may configure operational logs and preventive maintenance records consistent with ISO/IEC 17025 clause 7.6 (equipment management) and FDA 21 CFR Part 11 principles (when integrated with validated data capture systems).

Software & Data Management

The SHZ-95B operates as a standalone analog device without embedded firmware or digital interfaces. However, its stable vacuum output and predictable performance enable seamless integration with third-party process monitoring platforms via external pressure transducers (e.g., capacitance manometers) and programmable logic controllers (PLCs). Vacuum level can be logged using standard 4–20 mA or 0–10 V analog outputs when paired with compatible signal conditioners. No proprietary software is required; configuration and calibration adhere to manufacturer-recommended intervals documented in the English-language user manual (included with shipment).

Applications

• Routine solvent removal via rotary evaporation under controlled vacuum (≤100 mbar range).
• Vacuum-assisted gravity or pressure-driven filtration of crystalline precipitates or colloidal suspensions.
• Pre-evacuation of reaction vessels prior to inert-atmosphere transfer or Schlenk-line operations.
• Supporting lyophilization pre-chamber conditioning and secondary drying stages.
• Removal of dissolved gases from aqueous or organic solutions prior to spectroscopic analysis or electrochemical testing.
• Small-batch dehydration of heat-sensitive biomaterials where oil contamination must be avoided.

FAQ

Is the SHZ-95B suitable for vacuum distillation of chlorinated solvents?
Yes—its FKM seals and PP/copper/PVC wetted-path components offer improved resistance to chlorinated hydrocarbons versus standard NBR seals; however, water replacement frequency should increase to every 4–6 hours under continuous load.
Can this pump achieve high vacuum (<10⁻² mbar)?
No—the SHZ-95B is designed for rough vacuum applications (1–100 mbar); achieving high vacuum requires backing a turbomolecular or diffusion pump.
What is the recommended water quality for optimal performance?
Deionized or distilled water is strongly advised to minimize scale formation; tap water with hardness >150 ppm requires weekly reservoir cleaning and biocide treatment.
Does the unit include a vacuum gauge?
No—an external analog or digital vacuum gauge must be installed downstream of the vacuum port(s) for accurate process monitoring.
Is the motor compliant with international voltage standards?
The standard configuration operates at 220 V AC, 50 Hz; custom variants supporting 110 V / 60 Hz are available upon request with lead-time adjustment.