Underhill GNA-75 Brass Adjustable Pattern Nozzle 3/4 Fht

Product Description

The UNDERHILL GNA-75 is a 3/4-inch female hose thread (FHT) brass adjustable pattern nozzle designed for professional irrigation and water distribution applications. The all-brass construction provides durability in demanding field conditions. The adjustable spray pattern allows the operator to dial in coverage from a focused stream to a wide fan, making it adaptable to a range of flushing, irrigation, and general water delivery tasks. This nozzle is typically installed by irrigation technicians, landscapers, and plumbing professionals who require a reliable, corrosion-resistant connection at the hose end.

The GNA-75 threads directly onto standard 3/4-inch female hose thread fittings, making it compatible with common garden and commercial hose assemblies used in residential and light commercial irrigation systems. Its adjustable pattern makes it well suited for spot watering, equipment rinse-down, and general site water management. The brass body holds up to repeated use in outdoor and high-UV environments where plastic nozzles degrade prematurely.

Key Features

• 3/4-inch FHT connection fits standard hose end fittings
• All-brass body for corrosion resistance and long service life
• Adjustable spray pattern from focused stream to wide fan
• Suitable for irrigation, flushing, and general water delivery tasks
• Compact design for easy single-hand operation

Compatibility

Designed as an OEM-style replacement or upgrade nozzle for standard 3/4-inch female hose thread hose assemblies used in residential and commercial irrigation and water distribution systems.

Installation Notes

Installation requires no tools beyond hand-tightening the FHT connection to the hose end. Shut off the water supply before threading on or removing the nozzle to avoid pressure surges. Inspect the hose end washer before installation and replace it if worn to ensure a leak-free seal. Follow all applicable local plumbing and irrigation codes when integrating into a permanent or semi-permanent system.

Technical Specifications

• Connection Size: 3/4 inches
• Connection Type: Female Hose Thread (FHT)
• Material: Brass
• Pattern: Adjustable

Standard Information

• Brand: UNDERHILL
• Manufacturer Part Number: GNA-75