The B-Side Recirc to Drum Drop Tube Assembly (SKU 310078) is a complete stainless recirculation return system designed for safe and consistent drum recirc flow. Built with precision-grade stainless tubing, durable flare connectors, and a brass check valve, this assembly protects your system from backflow and ensures clean, stable chemical return.
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Backflow-Protected Recirculation for the B-Side
The B-side of your spray foam system handles the polyol blend, which requires stable, unrestricted flow during recirculation. To support this, the assembly includes a brass 1/2-inch check valve that prevents reverse flow and helps maintain consistent system pressure.
Key Benefits
- ✔️ Brass check valve for secure backflow protection
- ✔️ Stainless steel tubing and 37° flare connectors
- ✔️ Adjustable drop tube for top, middle, or bottom drum return
- ✔️ Liquid-tight connectors for sealed, contamination-free operation
- ✔️ Designed for clean and consistent B-side recirculation
- ✔️ Compatible with SFS rigs and standard proportioner systems
Technical Features
- 1/2″ stainless seamless tube for clean chemical flow
- GTX-S Triple-Lok female flare connectors
- T304 stainless 90-degree elbow and nipple
- 3/4” liquid-tight connector for sealed feedthrough
- Brass check valve (SLCT050 751cvpv)
Applications
- Spray foam proportioner B-side recirculation
- Polyol chemical return management
- System flushing and purge loops
What does the B-side assembly do?
It returns polyol from your proportioner back into the drum through a stainless drop tube, ensuring clean, stable flow.
Does the B-side include a check valve?
Yes. It includes a brass check valve to prevent backflow and maintain consistent return pressure.
Can I adjust the drop tube height?
Yes. You can recirculate at the top, middle, or bottom of the drum.
Is it compatible with all spray foam?
Yes. It integrates with most chemical drums that have the 3/4” bung hole in the lid.
