Toro - 1-1/2" #53 ACME Sprinkler with Dual Trajectory Nozzle

The Toro FLEX800 FLX55-538-66 sprinkler delivers superior coverage, adjustability, and durability for high-performance golf course and large turf irrigation systems. Designed with a powerful dual-trajectory #53 nozzle and 1.5" ACME inlet, it offers both 15° and 25° trajectory settings to improve water efficiency under varied wind conditions. This model allows true part- and full-circle operation with adjustable arcs between 40°–360°, making it ideal for dynamic seasonal watering needs. With pressure-regulating options, rugged construction, and tool-free adjustability, the FLX55-538-66 is a premium solution for professionals seeking precision and reliability.

Key Features:

• Dual-trajectory #53 nozzle with 15° and 25° spray angles
• Radius: 57'–71' depending on pressure and angle
• Flow rate range: 20.9–30.2 GPM at 65–100 PSI
• True part- and full-circle adjustability (40°–360°)
• Threaded-in nozzles with color-coded identification

Construction & Durability:

• Heavy-duty ABS body with UV-resistant components
• Stainless steel valve seat to prevent internal damage from debris
• Sealed, over-molded riser with urethane ring for clean retraction
• Top-serviceable filter screens and riser components

Performance & Functionality:

• Operating pressure range: 40–150 PSI; optimal: 65–100 PSI
• Precipitation rate: 0.46”–0.58” per hour
• Pop-up height to nozzle: 3.25”
• Dual-trajectory improves coverage in wind and low-clearance zones
• Back nozzle port with plug for added flexibility

Ease of Installation & Use:

• Tool-free arc and trajectory adjustment
• Integrated valve-in-head operation with manual On/Off/Auto selector
• Compatible with Toro swing joints and 1.5” ACME inlet fittings
• Supports quick changes to nozzle and trajectory settings

Technical Specifications:

• Inlet Size: 1.5” ACME Female
• Operating Pressure: 40–150 PSI (Recommended: 65–100 PSI)
• Flow Rate: 20.9–30.2 GPM (varies by pressure and angle)
• Spray Radius: 57'–71'
• Arc Range: 40°–360°
• Pop-up Height: 4.19” overall
• Body Height: 11.375”
• Body Flange Diameter: 7.5”
• Trajectory Settings: 15° and 25°, adjustable in 1° increments
• Thread Type: Female-threaded ACME
• UV-Resistant Components: Yes

Installation & Application:

• Recommended for: Golf courses, sports fields, parks, and large commercial turf areas
• Installation: In-ground with Toro triple-swing joints
• Soil/Climate Suitability: Performs well in varied climates including windy zones

Compatibility & Optional Accessories:

• Compatible with Toro’s FLX55 nozzles (#51–#59)
• Supports Spike Guard™, DC Latching, and GDC activation types
• Optional radius reduction screw for micro-adjustments
• Accepts back nozzles for enhanced rear coverage

Explore the full range of FLEX800 Series rotors and compatible Toro nozzles to customize your irrigation system. Contact us for expert recommendations or bulk order support.