Hunter I-40 sprinkler with stainless steel riser and blue nozzle
Hunter I-40 sprinkler with stainless steel riser and blue nozzle
Hunter I-40 stainless steel riser sprinkler watering grass
Hunter I-40 stainless steel riser sprinkler watering grass
Selection of coloured Hunter I-40 sprinkler nozzle inserts
Selection of coloured Hunter I-40 sprinkler nozzle inserts
Hunter I-40 sprinkler with stainless steel riser and blue nozzle
Hunter I-40 stainless steel riser sprinkler watering grass
Selection of coloured Hunter I-40 sprinkler nozzle inserts

HUNTER I-40 STAINLESS STEEL 100MM POP-UP ROTOR - BOX OF 12

Hunter I-40 Stainless Steel 100mm Pop-Up Rotor for parks, sports fields and larger turf areas. Its rugged body and stainless steel riser help withstand wear over time. Automatic arc return restores the chosen pattern if the turret is moved out of position, and the non-strippable drive helps protect the mechanism.

The Hunter gear drive adjustment tool is required for arc adjustment and is also used for nozzle installation and radius adjustment.

✓ Inlet: 25mm (1") BSP female
✓ Coverage: 13.1–21.3 metre radius across nozzle options
✓ Spray Pattern: 50°–360°
✓ Recommended Pressure: 250–700 kPa
✓ Flow: 27.2–114.1 L/min across nozzle and pressure options
✓ Pack Quantity: 12 sprinklers
✓ Pop-Up Height: 100mm

Hunter I-40 Gear Drive Sprinkler Specifications
Hunter I-40 Nozzle Performance Guide

Hunter I-40 Stainless Steel 100mm Pop-Up Rotor for parks, sports fields and larger turf areas.

Its rugged body and stainless steel riser help withstand wear over time. Automatic arc return restores the chosen pattern if the turret is moved out of position, and the non-strippable drive helps protect the mechanism.

The I-40 provides a 13.1–21.3 metre radius across its nozzle configurations. Radius is the distance from the sprinkler to the outer edge of the watering pattern. Recommended operating pressure is 250–700 kPa.

The spray arc adjusts from 50° to 360°. The top adjustment screw lets you shorten the watering distance. Choose the nozzle for both watering distance and arc so sprinklers on the same zone apply water at similar rates.

The Hunter gear drive adjustment tool is required for arc adjustment and is also used for nozzle installation and radius adjustment.

The check valve holds back up to 4.5 metres of elevation to reduce low-head drainage.

The 100mm stainless steel riser extends during watering and retracts afterwards. The inlet is 25mm (1") BSP female. The overall body height when retracted is 200mm.

Six nozzle choices are supplied per sprinkler, with a 25° trajectory. Supplied as a box of 12 sprinklers.

Warranty: Five years.

Hunter I-40 Gear Drive Sprinkler Specifications
Hunter I-40 Nozzle Performance Guide

✓ Product Type and Application
Hunter I-40 Stainless Steel 100mm Pop-Up Rotor.

✓ Dimensions and Connection
Inlet: 25mm (1") BSP female.
Pop-up height: 100mm.
Overall body height when retracted: 200mm.
Riser: stainless steel.

✓ Pack Quantity
Box of 12 sprinklers of this model.

✓ Coverage and Spray Pattern
Radius: 13.1–21.3 metres across nozzle and pressure options. Radius is the distance from the sprinkler to the outer edge of the watering pattern.
Spray arc: 50°–360°.

✓ Pressure & Flow
Recommended pressure: 250–700 kPa.
Operating pressure: 250–700 kPa.
Flow: 27.2–114.1 L/min across the nozzle range.
See ‘Precipitation Rate’ below for how the arc setting affects the amount of water applied across the area.

✓ Nozzles and Performance
Supplied with 6 nozzle choices. The radius and flow ranges above include nozzle sizes that are not supplied with the sprinkler. The example below shows the supplied nozzle choices.
Trajectory: 25°.

Standard adjustable model.
Example comparison at 450 kPa, before radius reduction:
8 Light Brown nozzle: 14 metre radius; 36.3 L/min.
10 Light Green nozzle: 15.5 metre radius; 44.5 L/min.
13 Light Blue nozzle: 15.5 metre radius; 48.3 L/min.
15 Grey nozzle: 17.1 metre radius; 61.2 L/min.
23 Dark Green nozzle: 19.2 metre radius; 83.9 L/min.
25 Dark Blue nozzle: 20.4 metre radius; 94.2 L/min.

✓ Radius Adjustment
The top adjustment screw lets you shorten the watering distance. Choose the nozzle for the required watering distance, then use the screw to shorten the radius as needed.

✓ Sprinkler Spacing
Spacing is the distance between neighbouring sprinklers.
For head-to-head coverage, each sprinkler throws water far enough to reach the next sprinkler. This overlap helps water the area between them evenly.
Use the actual watering distance after adjustment when planning the spacing.
A square layout places sprinklers on a square grid. A triangular layout uses staggered rows.

✓ Precipitation Rate
Precipitation rate describes how quickly water is applied across the area, measured in millimetres per hour.
For example, with the 15 Grey nozzle at 450 kPa, a 180° half-circle arc and sprinklers spaced 17.1 metres apart:
Square layout: 25 mm/hour.
Triangular layout: 29 mm/hour.
At the same pressure, the same nozzle uses essentially the same flow whatever the arc setting. A smaller arc concentrates that water over a smaller area.
Different nozzle sizes can help balance watering between smaller and larger arcs, but they also change the watering distance. Choose nozzles that maintain head-to-head coverage; changing nozzle size alone may not suit an existing layout.
Where suitable nozzle combinations cannot provide similar watering rates, put sprinklers with different watering rates on separate zones so their run times can be set independently.

✓ Operation and Servicing
Adjustable model with automatic arc return. The check valve holds back up to 4.5 metres of elevation to reduce low-head drainage.

✓ Warranty
Five years.

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