Underhill - Magnum UltraMAX Full Throttle Nozzle, 1" FHT

The Underhill MAGNUM™ UltraMax Nozzle is the ultimate professional-grade nozzle built for demanding turf, sports field, and facility maintenance applications. Designed for high-flow use with ¾” and 1” hoses, this leak-proof, firefighter-quality nozzle delivers powerful, multi-pattern spray options with exceptional durability and performance.

Key Features:

• Multi-pattern spray options: Fog, Jet Stream, and Fan
• Ideal for greens, tees, infields, and stadium washdowns
• Rated for hose flow rates from 15-40 GPM
• Built with aircraft aluminum, stainless steel, and TPR rubber
• No plastic internals—no breakage, sticking, or wear
• Full Throttle and Turbo Shift models available
• Turbo Shift provides two distinct GPM ranges for flexible use

Construction & Durability:

• Made from aircraft aluminum and stainless steel for extreme durability
• TPR rubber exterior ensures comfortable handling and impact resistance
• No plastic internal components for longer-lasting performance
• Leak-proof design withstands 600 PSI working pressure

Performance & Functionality:

• Spray patterns include Fog for fine mist, Jet Stream for distance, and Fan for broad coverage
• Handles full hose flows up to 43 GPM (57–151 L/min)
• Turbo Shift model allows toggling between flow ranges for precision control
• Perfect for high-demand zones requiring variable water delivery

Ease of Installation & Use:

• 1” Female Hose Thread (FHT) inlet fits standard commercial hoses
• Compatible with ¾” and 1” hoses
• Ready-to-use out of the box—no assembly required
• Designed for professional use with intuitive spray pattern switching

Technical Specifications:

• Operating Flow Range: 15–40 GPM (Full Throttle); 7–43 GPM (Turbo Shift)
• Working Pressure Rating: 600 PSI
• Inlet: 1” FHT (Female Hose Thread)
• Material: Aircraft aluminum, stainless steel, TPR rubber
• Spray Patterns: Fog, Jet Stream, Fan

Installation & Application:

• Recommended Uses: Sports fields, greens, tees, infield conditioning, stadium and equipment washdowns
• Installation Method: Hose-end connection

Compatibility & Optional Accessories:

• Compatible with standard ¾” and 1” commercial hoses