Rain Bird RWSB1401 Root Watering System — 0.25 GPM Bubbler, 36"

The Rain Bird RWSB1401 Root Watering System delivers efficient subsurface irrigation and aeration for trees and shrubs. Designed for long-term root health, the RWS directs water, oxygen and nutrients beneath compacted soil to encourage deep, stable root development while reducing runoff and surface evaporation.

• Complete pre-assembled unit: 36" (91.4 cm) semi-rigid mesh tube with patented basket-weave canister for stable below-grade installation.
• Factory-installed 1401 bubbler: fixed riser bubbler rated at approximately 0.25 gpm (0.95 l/min) for gentle, uniform deep-root delivery.
• Vandal-resistant 4" (10.2 cm) retaining cap with locking grate protects hardware at-grade and preserves landscape aesthetics.
• 1/2" M NPT inlet and compatible swing-assembly make connection to lateral lines simple and time-saving for installers.
• Optional accessories: sand sock (recommended for sandy soils), check valve option to prevent line drainage, and purple grate for non-potable systems.
• Versatile application: intended for use with bubbler heads or drip emitters; ideal size and flow for shrubs and smaller trees.

Rain Bird provides installation guides, technical specifications and case studies demonstrating improved root mass and deeper root development when using the RWS. Use the RWSB1401 where you need targeted subsurface irrigation that protects investment in landscape plantings and minimizes surface disruption. Refer to Rain Bird installation documents for proper siting, backfill and maintenance procedures to ensure long service life.