Magnetic Stirring Reactors
Roben Mfg, Inc. manufactures magnetic stirring reactors for processes requiring contamination-free mixing under high-pressure conditions. Our magnetically-driven reactor designs eliminate shaft seals entirely, providing hermetic containment for hazardous, sterile, or high-purity applications where product integrity is paramount.
What Are Magnetic Stirring Reactors?
Magnetic stirring reactors use externally-mounted drive magnets coupled through the vessel wall to internal mixing magnets, eliminating the need for shaft penetrations and mechanical seals. This design provides absolute containment with zero process leakage, making magnetic drives essential for toxic materials, sterile processes, and high-purity applications where seal contamination or emissions are unacceptable.
Why Choose Magnetic Stirring Reactors from Roben Mfg?
- Zero shaft seal leakage
- Contamination-free operation
- Hermetic process containment
- No seal maintenance required
- Sterile process capability
- High-purity product protection
- Reduced operating costs
Key Features
- Rare earth magnet coupling
- Hermetically sealed containment
- Bottom or top entry configurations
- High torque capability
- Temperature-rated magnets
- Pressure ratings to 6000+ psig
- Various impeller options
- ASME code construction
Applications
- Pharmaceutical synthesis
- Sterile processing
- Toxic material handling
- High-purity chemical production
- Supercritical fluid processing
- Hazardous waste treatment
- Nuclear applications
- Biotechnology fermentation
Compliance and Certifications
- ASME Section VIII Division 1 and Division 2 — “U” and “U2” Stamps
- National Board “R” Stamp for repairs and alterations
- API standards compliance (API 934, API 941, API 579)
- ISO 9001:2015 Quality Management System
- PED (Pressure Equipment Directive) for European market
- CRN (Canadian Registration Number) for Canadian provinces
Quality Assurance
- Material certifications with complete traceability
- Qualified welding procedures and welders
- Post-weld heat treatment (PWHT) per code requirements
- Comprehensive NDE including RT, UT, MT, and PT
- Hydrostatic testing per ASME requirements
- Agitation system performance verification
- Complete documentation packages
Frequently Asked Questions
1. What are the pressure limitations of magnetic drives?
Modern magnetic drive reactors achieve pressure ratings exceeding 6000 psig with proper containment shell design. The containment shell thickness determines pressure rating while maintaining adequate magnetic coupling. We design containment systems for your specific pressure requirements while optimizing magnetic efficiency.
2. How does magnetic drive torque compare to direct drive?
Magnetic drives provide torque comparable to direct drive systems for most mixing applications. High-strength rare earth magnets enable substantial torque transmission. Torque limits depend on magnet size, coupling gap, and temperature. We size magnetic drives for your specific mixing requirements including startup torque for settled materials.
3. What happens if magnetic coupling is overloaded?
Magnetic drives slip rather than fail catastrophically when overloaded, providing inherent protection against mechanical damage. The impeller stops while the drive motor continues running, triggering high-current or vibration alarms. Once overload is corrected, normal operation resumes without component replacement.
Contact Roben Mfg
Contact Roben Mfg today to discuss your magnetic stirring reactors requirements. Our engineering team provides expert consultation on materials, design optimization, agitation systems, and complete vessel solutions.
Phone: (281) 441-4088
Email: info@robenmfg.com
Website: www.robenmfg.com
