Birchmeier 15K Iris Backpack Sprayer

Birchmeier Iris 15K AT3 Backpack Sprayer – 4 Gallon (12004601)

The Birchmeier Iris 15K AT3 Backpack Sprayer is a professional-grade, manually operated sprayer built for demanding pest control, lawn care, and vegetation management applications. Featuring a 4-gallon (15-liter) tank, an externally mounted brass piston pump, and a maximum operating pressure of 87 PSI, the Iris 15 AT3 combines dependable spraying performance with a durable, serviceable design.

Its ergonomic backpack configuration, padded shoulder straps, and reversible pump handle make it well suited for extended use. The external pump design also provides convenient access to components for maintenance and repairs.

Features & Benefits

• 4-Gallon Capacity: Large 15-liter tank for professional spraying applications.
• External Brass Piston Pump: Durable pump construction with convenient access for inspection and maintenance.
• Up to 87 PSI: Manual pumping system capable of developing up to 6 bar of operating pressure.
• Left- or Right-Hand Operation: Reversible pump lever with an adjustable-length handle and working/parking positions.
• 60 cm Brass Spray Wand: Approximately 24-inch spray tube with an adjustable brass nozzle.
• Brass Trigger Valve: Ergonomic trigger with locking function, integrated filter, and adjustable gland packing.
• Ergonomic Carrying System: Contoured tank and padded S-shaped shoulder straps for improved comfort.
• Stainless Steel-Reinforced Frame: Provides a sturdy foundation for demanding use.
• Serviceable Pump Components: Integrated lubrication system, adjustable piston seal, and maintainable check valve help simplify routine service.

Product Specifications

Maintenance & Replacement Parts

The Iris 15 AT3 is designed with repairable components to help extend its service life. The externally mounted pump allows access to the piston, seals, check valve, and other components for routine maintenance.

Keep the pump properly lubricated, clean the tank and filters after use, and inspect seals and fittings for wear according to the owner's manual.

Shop Birchmeier Replacement Parts & Accessories

Learn more about our Birchmeier Backpack Guarantee.

Birchmeier Maintenance & Product Resources

• Birchmeier Sprayers: Quality, Durability, Dependability
• Birchmeier Sprayer Maintenance – Part 1
• Birchmeier Sprayer Maintenance – Part 2

Parts Diagrams & Owner's Manual

• Download Birchmeier AT Backpack Parts Diagram (PDF)
• Download Birchmeier AT Backpack Parts List (PDF)
• Download Birchmeier AT Backpack Owner's Manual (PDF – Large File)

Always follow the spray product label and manufacturer instructions. Confirm chemical compatibility before use. Specifications shown are for the Iris 15 AT3 model; accessories and supplied equipment may vary by configuration.