The A-Side Recirc to Drum Drop Tube Assembly (SKU 310045) is built for precise, moisture-controlled chemical recirculation back into your drum. This assembly features an integrated port for a desiccant dryer cartridge, which is essential for protecting isocyanate from moisture exposure during recirculation. Designed with stainless steel tubing, durable flare connectors, PVC reducers, and liquid-tight fittings, this assembly ensures long-term reliability and clean, controlled flow.
Related Components & SKUs
Precision Moisture Control for Isocyanate
The A-side of your spray foam system handles isocyanate, which reacts aggressively with moisture. Even small amounts can cause curing issues, crystallization, and proportioner blockages. This assembly integrates directly with a desiccant dryer cartridge (sold separately) to keep the A-side dry, stable, and protected during recirculation.
Key Benefits
- ✔️ Integrated desiccant dryer adapter for A-side moisture protection
- ✔️ Stainless steel 1/2″ x .049″ seamless tubing for clean chemical return
- ✔️ Adjustable drop tube for top, middle, or bottom drum return
- ✔️ 37° flare connectors for secure, leak-free sealing
- ✔️ PVC reducer and flexible coupling for secure drum fitment
- ✔️ Liquid-tight connectors for sealed, contamination-free operation
- ✔️ Ideal for spray foam proportioner recirculation loops
Technical Features
- Stainless steel seamless tubing
- GTX-S Triple-Lok female flare connectors
- T304 stainless nipple and 90° fittings
- PVC reducer bushing and flexible coupling
- Liquid-tight 3/4” connectors
Applications
- Spray foam proportioner A-side recirculation
- Moisture-sensitive chemical return systems
- Purge loops and equipment maintenance
Why does the A-side need moisture control?
Isocyanate reacts with moisture, causing curing, crystallization, and system blockages. The dryer adapter allows you to use a desiccant cartridge to keep the A-side dry.
Does this include the desiccant cartridge?
No. The A-side assembly includes the adapter only. The cartridge (SKU 236449) is sold separately.
Can the drop tube height be adjusted?
Yes. It can be positioned for top, middle, or bottom return into the drum.
Is this compatible with most spray foam proportioners?
Yes. It integrates cleanly with SFS rigs and standard chemical drums that have the 3/4” bung hole in the lid.
