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The RAIN BIRD A22445 is a subsurface root watering system designed to deliver water and nutrients directly to the root zone of trees and shrubs. At 36 inches in length and rated for 0.50 GPM flow, it bypasses surface evaporation and runoff by channeling irrigation water deep into the soil where root systems actively absorb moisture. This unit is a standard tool for landscape professionals, arborists, and irrigation contractors working on tree establishment, drought mitigation, or deep-root fertilization programs. Installation requires no specialized excavation equipment, making it a practical choice for both new plantings and established trees in residential and commercial landscape settings.
The A22445 is suited for use in residential and commercial landscape irrigation systems where deep-root watering is specified. It performs well in clay-heavy or compacted soils where surface drip or spray irrigation fails to penetrate to effective root depth. Landscape contractors and irrigation specialists commonly install this product during new tree and shrub planting or as a retrofit to existing landscape zones. It is also used in turf renovation projects and municipal tree programs where consistent deep moisture delivery is required for plant establishment and long-term health.
Designed as an OEM-style component for subsurface drip and root watering irrigation systems. Consult system layout plans and zone pressure ratings to confirm fitment before installation.
Installation is typically performed by a licensed irrigation contractor or landscape professional. Shut off the irrigation zone and relieve system pressure before connecting or removing the unit. Follow local plumbing and irrigation codes, and verify that operating pressure at the installation point falls within the system design parameters. Do not overtighten fittings, as this can crack the body or damage the inlet connection.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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