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 GEAR DRIVE SPRINKLERS

Hunter I-40 Gear Drive Sprinklers for large turf irrigation. Its rugged body and stainless steel riser help withstand wear over time. The standard model provides adjustable part-circle coverage; the opposing-nozzle model waters a fixed full circle with improved short- and mid-range distribution.

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 standard; 15.2–23.2 metres opposing-nozzle model
✓ Spray Pattern: Adjustable and fixed full-circle models
✓ Recommended Pressure: 250–700 kPa
✓ Flow: 27.2–114.1 L/min standard; 45.8–129.4 L/min opposing-nozzle model, across nozzle and pressure options
✓ Pop-Up Height: 100mm

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

More Information
Product Specifications
Hunter I-40 sprinkler with stainless steel riser and blue nozzle
HUNTER I-40 GEAR DRIVE SPRINKLERS
Hunter I-40 sprinkler with stainless steel riser and blue nozzle
Hunter I40 Gear Drive Pop-Up 4" Stainless Steel (Radius 13.1m - 21.3m) SPHI40SS
$166.93 /each
Hunter I-40 sprinkler with stainless steel riser and blue nozzle
Hunter I40 Gear Drive Pop-Up 4" Stainless Steel (Radius 13.1m - 21.3m) - BOX OF 12 SPHI40SSBQ
$1,842.85 /each
Hunter I-40 sprinkler with stainless steel riser and blue nozzle
Hunter I40 Gear Drive Pop-Up 4" Full Circle Stainless Steel with Opposing Nozzles (Radius 15.2m - 23.2m) SPHI40SSOPP
$206.64 /each

Hunter I-40 Gear Drive Sprinklers for large turf irrigation.

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

The I-40 combines a rugged body and stainless steel riser to help withstand wear over time. The adjustable model has automatic arc return and a non-strippable drive; the opposing-nozzle model provides fixed full-circle watering.

The adjustable model covers a 13.1–21.3 metre radius across its nozzle configurations. The opposing-nozzle model covers 15.2–23.2 metres, with additional streams for distribution nearer the sprinkler. Recommended operating pressure is 250–700 kPa.

The adjustable model sets from 50° to 360°. The opposing-nozzle model has a fixed 360° pattern. Nozzle selection and operating pressure determine watering distance and flow. Choose the nozzle for both watering distance and arc so sprinklers on the same zone apply water at similar rates.

Both models use a stainless steel riser with a 100mm pop-up height. The overall body height is 200mm when retracted, with a 25mm BSP female inlet.

The built-in check valve holds back up to 4.5 metres of elevation, reducing drainage through lower heads after watering.

Six nozzle choices are supplied per sprinkler, with a 25° trajectory.

Warranty: Five years.

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

✓ Product Type and Application
Hunter I-40 Gear Drive Sprinklers.

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

✓ Coverage and Spray Pattern
Hunter I-40 Stainless Steel 100mm Pop-Up Rotor:
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°.
Hunter I-40 Stainless Steel 100mm Pop-Up Rotor - Opposing Nozzles:
Radius: 15.2–23.2 metres across nozzle and pressure options. Radius is the distance from the sprinkler to the outer edge of the watering pattern.
Spray arc: Fixed 360° full circle.

✓ Pressure & Flow
Recommended pressure: 250–700 kPa.
Operating pressure: 250–700 kPa.
Hunter I-40 Stainless Steel 100mm Pop-Up Rotor:
Flow: 27.2–114.1 L/min across the nozzle range.
Hunter I-40 Stainless Steel 100mm Pop-Up Rotor - Opposing Nozzles:
Flow: 45.8–129.4 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.
Fixed full-circle opposing-nozzle model; flow is the total for the nozzle configuration.
Example comparison at 450 kPa, before radius reduction:
15 Grey nozzle: 16.8 metre radius; 53.3 L/min.
18 Red nozzle: 18 metre radius; 60.1 L/min.
20 Dark Brown nozzle: 19.2 metre radius; 75.6 L/min.
23 Dark Green nozzle: 19.8 metre radius; 80.8 L/min.
25 Dark Blue nozzle: 20.4 metre radius; 87.2 L/min.
28 Black nozzle: 21 metre radius; 106.4 L/min.

✓ 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.
Standard adjustable model.
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.
Fixed full-circle opposing-nozzle model; flow is the total for the nozzle configuration.
For example, with the 15 Grey nozzle at 450 kPa, a 360° full-circle arc and sprinklers spaced 16.8 metres apart:
Square layout: 11 mm/hour.
Triangular layout: 13 mm/hour.
On adjustable models, the same nozzle uses essentially the same flow at the same pressure 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
Hunter I-40 Stainless Steel 100mm Pop-Up Rotor:
Adjustable model with automatic arc return. The check valve holds back up to 4.5 metres of elevation to reduce low-head drainage.
Hunter I-40 Stainless Steel 100mm Pop-Up Rotor - Opposing Nozzles:
Fixed full-circle model with opposing nozzles for short- and mid-range distribution. The check valve holds back up to 4.5 metres of elevation to reduce low-head drainage.

✓ Warranty
Five years.

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