Rainproof cable tray for refrigerant pipes

FRP and covered metal cable trays are ideal for rainproof support of refrigerant pipes in outdoor HVAC installations.

Recommended Materials and Types

FRP (Fiber-Reinforced Plastic) Cable Trays are highly suitable for outdoor refrigerant pipe installations due to their lightweight, corrosion-resistant, moisture-proof, and fire-resistant properties. They come in ladder-type and channel-type designs. Ladder-type trays provide ventilation and heat dissipation, while channel-type trays often feature a perforated bottom with integral side rails and can be fitted with flat or peaked covers to protect pipes from rain, dust, and mechanical damage . Metal Cable Trays with Protective Coatings such as stainless steel (AISI 304L/316L), pre-galvanized steel, or powder-coated steel are also suitable for outdoor use. These trays offer high load-bearing capacity, durability, and corrosion resistance, making them effective for supporting insulated refrigerant pipes on rooftops or exposed areas .

Tray Features for Rainproofing

• Covers: Flat or peaked covers prevent water accumulation and protect pipes from direct rainfall and debris .
• Perforation and Ventilation: Perforated trays allow airflow to prevent condensation and heat buildup around refrigerant pipes .
• Interlocking Systems: Some systems, like Trayco, offer screw-free interlocking trays that provide extra load-bearing capacity and a neat, protected installation .
• Pipe Supports: Integrated pipe supports or suspension systems, such as Pipelounge or Aspen/Alixo supports, allow for secure fixing, expansion, and contraction of refrigerant pipes while maintaining a professional and safe layout .

Installation Considerations

• Ensure proper slope and drainage to avoid water pooling on trays.
• Use insulated supports to prevent thermal bridging and condensation on refrigerant pipes.
• Select UV-resistant FRP or coated metal trays for long-term outdoor durability.
• Consider modular or expandable systems for easy maintenance and future pipe additions .

Conclusion

For rainproof outdoor installations of refrigerant pipes, FRP channel or ladder trays with covers and corrosion-resistant metal trays with protective coatings are the most reliable options. Combining these trays with proper pipe supports ensures durable, safe, and professional HVAC or refrigeration installations.