Brass hose nipple GEKO G70171 — 19 mm hose, 1" external thread, wrench flats

GEKO G70171 brass hose nipple designed to connect 19 mm (3/4") flexible hoses to fittings with a 1" external thread. Manufactured from brass to provide corrosion resistance and reliable performance in water and garden applications, the adapter has integrated wrench flats to allow secure tightening with a spanner. The compact construction and standard threaded end make it compatible with many threaded hose fittings and connectors used in domestic and light industrial environments.

Advantages

The brass construction offers good resistance to corrosion and mechanical wear while maintaining dimensional stability. Wrench flats facilitate proper tightening and reduce the risk of leaks caused by insufficient torque or damaged threads. The nipple’s geometry provides a secure hose grip when used with a suitable hose clamp, and the standard 1" external thread ensures compatibility with common threaded couplings and accessories.

Suitable for

• Garden watering systems and hose connections
• Domestic water supply and outdoor taps
• Light industrial fluid transfer where brass fittings are acceptable
• Temporary or permanent hose attachments requiring a 1" threaded connection

Key specifications

• Hose tail diameter: 19 mm (suitable for 19 mm inner-diameter hoses)
• Thread type: external 1" standard thread
• Material: brass (corrosion-resistant metal alloy)
• Feature: wrench flats for spanner tightening
• Application temperature: suitable for typical ambient and water temperatures (domestic and garden use)

How to use

Ensure the hose inner diameter matches the 19 mm hose tail. Slide a suitable hose clamp over the hose, push the hose firmly onto the barbed tail until it seats against the hex/wrench flats, then position the clamp over the hose tail and tighten to secure the connection. Thread the 1" external end into the corresponding internal threaded fitting by hand to engage the threads, then use a spanner on the wrench flats to complete tightening. Avoid over-tightening to prevent thread damage or deformation of the hose.

Usage recommendations

For leak-free and durable connections, use an appropriate stainless-steel or high-quality worm-drive hose clamp on the 19 mm hose and check compatibility of the 1" mating fitting material. Inspect seals and connections periodically and avoid exposure to aggressive chemicals that could damage brass fittings.