Pneumatic Reflux Divider

Pneumatic Reflux Divider

The Pneumatic Reflux Divider is a high-performance glass component designed for automated control of reflux ratios in distillation columns. Unlike manual or electro-magnetic dividers, this type uses pneumatic actuation to open and close the reflux funnel, allowing rapid and precise control of the reflux stream.

Constructed from borosilicate glass 3.3, it provides excellent chemical resistance, thermal stability, and durability, making it ideal for laboratory, pilot, and industrial-scale operations. Liquid seals prevent vapour bypass, ensuring accurate distillate collection and consistent separation performance.

Key Features & Benefits

• Automated reflux control via pneumatic actuation
• Rapid response to process changes, ensuring stable reflux ratio
• Borosilicate Glass 3.3 for chemical and thermal resistance
• Thermometer pockets available for temperature monitoring
• Liquid seals prevent vapour bypass, ensuring accurate distillate collection
• High reliability for continuous operation
• Suitable for laboratory, pilot, and industrial distillation setups

Technical Specifications

Cat. Ref	DN	DN1	DN2	L (mm)	L1 (mm)	Free Cross Sec. cm²	Max Product L/hr
RDP3	80	25	25	400	100	20	120
RDP4	100	25	25	425	125	50	250
RDP6	150	25	25	475	150	100	400
RDP9	225	25	25	550	175	150	650
RDP12	300	25	25	725	200	250	900
RDP16	400	40	40	825	225	350	1200
RDP18	450	40	40	925	250	500	1500

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How It Works

1. Install the pneumatic reflux divider at the top of the distillation column.
2. Connect the pneumatic actuator to a compressed air supply with control valves.
3. The internal funnel moves automatically according to air pressure to maintain the desired reflux ratio.
4. Thermometer pockets (DN2) allow for real-time temperature monitoring.
5. Liquid seals ensure vapour-tight operation, preventing bypass and maintaining accurate distillate control.
6. The transparent borosilicate glass body allows visual observation of reflux flow.

Applications

• Chemical and pharmaceutical industries for precise distillation control
• Laboratory & pilot plants requiring automated reflux management
• Industrial-scale distillation setups needing continuous operation
• Processes requiring thermometer monitoring and vapour-tight operation
• Systems where rapid adjustment of reflux ratio is critical

Why Choose Pneumatic Reflux Dividers?

• Fast and automated reflux adjustment for high-precision separation
• Durable borosilicate glass construction ensures chemical and thermal stability
• Thermometer pockets for accurate temperature monitoring
• Liquid seals for vapour-tight operation
• Suitable for laboratory, pilot, and industrial operations
• Reduces manual intervention and increases process efficiency

FAQs

Q1: How is this different from an electro-magnetically operated reflux divider?
A: The pneumatic reflux divider uses compressed air for actuation, allowing faster response and continuous automatic control, while the electro-magnetic version relies on electromagnet movement.

Q2: Is a liquid seal required?
A: Yes, it ensures vapour does not bypass, maintaining accurate reflux ratios.

Q3: Can this be used in industrial-scale columns?
A: Absolutely, it is suitable for lab, pilot, and industrial distillation systems.

Q4: Can the actuator be automated?
A: Yes, the pneumatic actuator can be integrated with timers or process controllers for fully automated operation.