Rain Bird MPR-15Q spray nozzle - 90° quarter-circle - 3.4 to 4.6 m radius

Rain Bird MPR-15Q spray nozzle for larger lawn corners

The Rain Bird MPR-15Q is a fixed-pattern spray nozzle with a 90° quarter-circle spray pattern and a radius of 3.4 to 4.6 m. It is particularly suitable for automatic irrigation of larger lawn corners where a longer spray radius is required. Whether installed at the corner of a patio, next to a garden path or where two property boundaries meet, the nozzle directs water into a defined quarter-circle area.

As part of the Rain Bird MPR Series, the MPR-15Q features matched precipitation rates that help coordinate water distribution across different nozzle patterns. It is a practical choice when the MPR-12Q does not provide sufficient coverage and a fixed 90° spray pattern is required. This makes it suitable for both new irrigation systems and upgrades to existing installations.

90° quarter-circle coverage with up to 4.6 m radius

The fixed 90° spray angle makes the Rain Bird MPR-15Q particularly useful for sprinkler positions in lawn corners. Water is distributed over a quarter-circle area, helping keep irrigation focused on the intended grass rather than surrounding paved surfaces. Correct installation 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. Rain Bird does not recommend reducing the normal spray radius by more than 25%.

Matched precipitation rates for balanced lawn 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-15Q has a flow rate of approximately 2.5 to 3.5 l/min depending on operating pressure. At 2.1 bar, this corresponds to around 210 litres per hour. When planning an irrigation zone, consider the combined flow requirements of all connected nozzles. Sufficient water pressure, suitable sprinkler spacing and adequate spray overlap are also essential for consistent coverage.

Easy installation on Rain Bird spray bodies

The Rain Bird MPR-15Q 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 a complete lawn irrigation system, the MPR-15Q can be combined with suitable MPR-15H half-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: 15Q / MPR-15Q
• Manufacturer SKU listed in the US store: A47005
• Series: Rain Bird MPR, 15 Series
• Product type: Fixed-pattern spray nozzle
• Spray pattern: Fixed 90° quarter-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: 2.5 to 3.5 l/min
• Water consumption at 2.1 bar: Approx. 210 l/h
• 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: Larger lawn corners and garden areas next to paths or patios

Frequently asked questions about the Rain Bird MPR-15Q

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

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 90° spray angle be adjusted?

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

How much water does the MPR-15Q use?

The flow rate ranges from approximately 2.5 to 3.5 l/min. At 2.1 bar, the nozzle uses around 210 litres per hour.

Which sprinkler bodies are compatible?

The Rain Bird MPR-15Q 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.

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

The MPR-15Q reaches up to 4.6 m, while the MPR-12Q reaches up to 3.7 m. Both have a fixed 90° spray pattern and a 30° spray trajectory.