Rain Bird MPR-15H spray nozzle - 180° half-circle - 3.4 to 4.6 m radius

Rain Bird MPR-15H spray nozzle for wide lawn borders

The Rain Bird MPR-15H is a fixed-pattern spray nozzle with a 180° half-circle spray pattern and a radius of 3.4 to 4.6 m. It is particularly suitable for automatic irrigation of wider lawns along straight boundaries. Whether installed next to a property wall, patio or garden path, the nozzle distributes water in a half-circle in front of the sprinkler, reaching more distant grass areas.

As part of the Rain Bird MPR Series, the MPR-15H features matched precipitation rates that help coordinate water distribution across different spray patterns. It is a practical choice when the MPR-12H does not provide sufficient coverage and a fixed half-circle spray pattern is required. The nozzle can be used in both newly designed irrigation systems and existing installations.

180° half-circle coverage with up to 4.6 m radius

The fixed 180° spray pattern makes the Rain Bird MPR-15H particularly suitable for sprinkler positions along straight lawn edges. Water is distributed over a half-circle area, helping keep irrigation focused on the grass rather than surrounding paved surfaces. Correct sprinkler placement and orientation are important for achieving the intended coverage.

The spray radius ranges from 3.4 to 4.6 m depending on operating pressure. At the optimum pressure of 2.1 bar, the nozzle reaches approximately 4.6 m. Its spray trajectory is 30°. The integrated stainless steel adjustment screw allows the radius to be reduced when necessary, while the half-circle spray angle remains fixed.

Matched precipitation rates for balanced irrigation

MPR stands for Matched Precipitation Rate. Rain Bird MPR nozzles are designed with coordinated precipitation rates to simplify the combination of different spray patterns. With correct sprinkler placement, suitable quarter-circle, half-circle and full-circle nozzles can be combined to provide balanced irrigation across differently shaped lawn areas.

The Rain Bird MPR-15H has a flow rate of approximately 4.9 to 7.0 l/min depending on operating pressure. At 2.1 bar, the manufacturer performance chart lists a flow of 0.42 m³/h, equivalent to 420 litres per hour. When planning an irrigation zone, consider the combined water requirements of all connected nozzles. Adequate pressure, suitable sprinkler spacing and sufficient spray overlap are essential for consistent coverage.

Easy installation on Rain Bird spray bodies

The Rain Bird MPR-15H fits compatible Rain Bird spray bodies and suitable shrub adapters, including models from the Rain Bird 1800 Series. A white fine-mesh filter screen is supplied to help protect the nozzle from debris. The stainless steel adjustment screw allows convenient radius adjustment during installation.

For automatic lawn irrigation, the MPR-15H can be combined with suitable MPR-15Q quarter-circle and MPR-15F full-circle nozzles. These models have comparable spray radii at the same operating pressure but different spray patterns and flow rates. Pressure-regulated spray bodies can help maintain suitable nozzle pressure when the supply pressure is higher than required.

Technical specifications and dimensions

• Manufacturer: Rain Bird
• Model: 15H / MPR-15H
• Series: Rain Bird MPR, 15 Series
• Product type: Fixed-pattern spray nozzle
• Spray pattern: Fixed 180° half-circle
• Spray radius: 3.4 to 4.6 m
• Operating pressure range in performance chart: 1.0 to 2.1 bar
• Optimum operating pressure: 2.1 bar
• Flow rate: 4.9 to 7.0 l/min
• Water consumption at 2.1 bar: 420 l/h according to the manufacturer
• Spray trajectory: 30°
• Radius adjustment: Stainless steel adjustment screw
• Spray angle: Fixed, not adjustable
• Filter screen: White fine-mesh filter
• Compatibility: Rain Bird spray bodies and suitable shrub adapters
• Recommended spray bodies: Rain Bird 1800 Series, pressure-regulated PRS models for higher supply pressure
• Applications: Wide lawn borders, larger lawns and grass areas next to paths or patios

Frequently asked questions about the Rain Bird MPR-15H

What is the spray radius of the Rain Bird MPR-15H?

The spray radius ranges from 3.4 to 4.6 m depending on operating pressure. At 2.1 bar, the nozzle reaches approximately 4.6 m.

Can the 180° spray angle be adjusted?

No. The MPR-15H has a fixed half-circle spray pattern. However, the radius can be reduced using the integrated stainless steel adjustment screw.

How much water does the MPR-15H use?

The flow rate ranges from approximately 4.9 to 7.0 l/min. At 2.1 bar, the manufacturer performance chart lists a flow of 0.42 m³/h, equivalent to 420 litres per hour.

Which sprinkler bodies are compatible?

The Rain Bird MPR-15H fits compatible Rain Bird spray bodies and shrub adapters, including models from the Rain Bird 1800 Series.

What does MPR mean?

MPR stands for Matched Precipitation Rate. These nozzles are designed with coordinated precipitation rates to support balanced water distribution across different spray patterns.

Can I combine the MPR-15H with other MPR nozzles?

Yes. It can be combined with suitable MPR-15Q quarter-circle and MPR-15F full-circle nozzles. Their different flow rates and the required sprinkler spacing should be considered during system design.

What is the difference between the MPR-15H and MPR-12H?

The MPR-15H reaches up to 4.6 m, while the MPR-12H reaches up to 3.7 m. Both have a fixed 180° spray pattern and a 30° spray trajectory.