The SIHI ISOchem pump series (CBS, CBM and CBE)
Part of the Flowserve portfolio, designed to handle the most demanding chemical, pharmaceutical, petrochemical, food processing and industrial applications. These liquid ring vacuum pumps are built to resist aggressive gases, vapors and liquids, ensuring durability, energy efficiency and safe operation in critical process environments.
Models in the SIHI ISOchem Series
SIHI ISOchem Pump CBS
The CBS model is designed for high-vacuum chemical processes. It excels in distillation columns, reactor systems and vapor-liquid handling, providing consistent performance under corrosive and aggressive conditions. Its ability to handle vapor-liquid mixtures makes it essential in chemical and pharmaceutical industries where reliability is critical.
SIHI ISOchem Pump CBM
The CBM model offers added flexibility and ease of maintenance compared to the CBS. With a modular design, it enables quick servicing and extended uptime. It is widely used in chemical, pharmaceutical and petrochemical plants, ensuring long-term, reliable operation under aggressive media conditions.
SIHI ISOchem Pump CBE
The CBE model is engineered for applications involving volatile or hazardous chemicals. Equipped with advanced sealing systems and superior corrosion resistance, it minimizes contamination risk and improves operator safety. It is the ideal choice for processes that require leak-free and environmentally safe vacuum pumping.
Applications of SIHI ISOchem Liquid Ring Vacuum Pumps
The SIHI ISOchem series is used in:
Chemical & Pharmaceutical: distillation, evaporation, solvent recovery
Petrochemical: vapor evacuation, gas handling
Paper industry: pulp washing, drying, vacuum handling
Plastics: material processing under vacuum
Food processing: dehydration, packaging, preservation
Plant engineering & construction: leak prevention, vacuum support systems
Benefits of SIHI ISOchem CBS, CBM and CBE Pumps
Corrosion Resistance – Withstands aggressive chemicals and vapors
Energy Efficiency – Lower operating costs compared to conventional pumps
Long Lifecycle – Rugged design ensures durability and uptime
Easy Maintenance – Modular construction reduces downtime and simplifies servicing
Technical Specifications of SIHI ISOchem Pump Series
| Parameter | Value / Range |
|---|
| Flow Rate | Up to 650 m³/h |
| Head | Up to 150 m |
| Speed | Max 3600 rpm |
| Temperature | Up to 350 °C (400 °C with options) |
| Casing Pressure | Up to 25 bar |
| Shaft Seal | Mechanical seal, magnetic drive, canned motor |
| Materials | Nodular iron, stainless steel, duplex |
| Direction of Rotation | Clockwise (drive end view) |
Design Features
Available with closed or semi-open impellers
Back pull-out assembly for easier maintenance
Compatible with single, double-acting, cartridge and gas seals (ISO 3069/DIN 24960)
Magnetic drive or canned motor options for leak-free operation
Custom shroud materials (Hastelloy, plastics, ceramics) for hazardous applications
Options
Operation up to 400 °C without external cooling
Special alloy materials for aggressive applications
Heated casing components for high-viscosity fluids
Advanced monitoring systems for operational safety
FAQ
Q1: What is an ISOchem pump?
A: It is a liquid ring vacuum pump series from SIHI (Flowserve) designed for handling aggressive gases, vapors and corrosive liquids in chemical and industrial processes.
Q2: What is the difference between CBS, CBM and CBE models?
A: CBS is for high-vacuum chemical duty, CBM adds modular ease of maintenance and CBE includes advanced sealing for hazardous or sensitive applications.
Q3: In which industries are SIHI ISOchem pumps used?
A: They are widely used in chemical, pharmaceutical, petrochemical, food processing, paper, plastics and plant engineering industries.
Q4: How do ISOchem pumps improve safety?
A: The CBE model uses advanced sealing to minimize leaks and contamination, making it ideal for handling hazardous chemicals.
Q5: What are the flow and temperature limits?
A: Flow up to 650 m³/h, temperature up to 350 °C (or 400 °C with options).
SIHI ISOchem Brochure
The SIHI ISOchem pump series (CBS, CBM and CBE) delivers high-performance vacuum pumping solutions for industries that require durability, corrosion resistance and safe handling of aggressive media. With modular designs, energy efficiency and advanced sealing options, the ISOchem series remains one of the most reliable and versatile liquid ring vacuum pumps on the market. Contact us today to configure the right SIHI ISOchem pump for your application.
