Water Sprinkler Gardena 8137-20

The GARDENA Premium Full or Part Circle Pulse Sprinkler Head (model 8137-20) is a durable, adjustable sprinkler for medium to large garden areas. It combines metal and plastic components for stability and can be screwed onto a tripod or a water pipe with a 21 mm (G 1/2) mating thread. The sprinkler delivers uniform coverage with a high-precision brass nozzle and offers an adjustable sector and range for targeted irrigation.

Advantages

The sprinkler head is constructed from a robust metal-and-plastic combination for increased stability and long service life. Adjustment rings allow fine sector selection from 25° to 360° with clear visual markings. A high-precision brass nozzle ensures even water distribution, while a large rotary knob provides simple range adjustment from 5 m up to 12.5 m, enabling irrigation of areas between approximately 75 m² and 490 m².

Suitable for

• Irrigating medium to large lawns and garden beds
• Watering areas requiring full or part-circle coverage
• Mounting on tripods or connection to standard garden pipes (G 1/2)

Key specifications

• Model: GARDENA 8137-20
• Thread diameter: 21 mm (G 1/2)
• Sector adjustment: 25°–360°
• Range adjustment: 5 m–12.5 m
• Irrigation area: approx. 75 m²–490 m²
• Nozzle: high-precision brass
• Materials: metal and plastic
• Colours: grey, orange, silver

How to use

Screw the sprinkler head onto a compatible tripod or water pipe with a 21 mm (G 1/2) thread. Use the adjustment rings to set the desired irrigation sector between 25° and 360°; the selected sector is visible on the rings. Turn the large rotary knob to set the spray range between 5 m and 12.5 m depending on the area to be irrigated. Position the sprinkler so the water distribution covers the intended lawn or bed, then open the water supply to start irrigation.

Usage recommendations

For optimal performance, check that fittings are tightly sealed to avoid leaks, select a sector and range appropriate to the area size, and periodically inspect the brass nozzle for clogs or debris.