Root Watering System (RWS)

Rain Bird’s Root Watering System (RWS) enables vital water, oxygen, and nutrients to bypass compacted soil and directly reach tree and shrub root systems.

Its patented basket weave canister allows ground installation to a depth of 36" (91,4 cm) for the RWS, 18" (45,7 cm) for the RWS-M and 10" (25,4 cm) for the RWS-S. The RWS is intended for use with water dispensing devices such as a bubbler head or a drip emitter.

The RWS promotes tree and shrub investment protection, watering efficiency and landscape aesthetics through deep root growth and tree development.

Features

Tree & Shrub Investment Protection

In a typical transplant project, as many as 20% of trees do not survive beyond two years. Over 50% of newly planted tree mortality is due to water and nutrient stress. Rain Bird’s RWS provides subsurface irrigation and aeration designed to prevent tree and shrub transplant shock. It allows the roots to grow deeper and broader resulting in greater tree stability, higher survival rates and long-term healthier growth.

Watering Efficiency

Subsurface, deep root watering and aeration ensures tree health and promotes accelerated growth. Subsurface watering is intelligent irrigation. RWS minimizes the total water volume required to irrigate trees, reducing water loss due to evaporation, wind and edge control losses.

Landscape Aesthetics

The RWS helps prevent shallow root growth by minimizing water run-off and damage to hardscapes. The aesthetically designed subsurface bubbler is contained with the RWS tube. The below-grade installation contributes to a safer and more reliable installation -no one is tripping over or breaking above-ground irrigation hardware. The below-grade installation promotes a landscape’s natural appearance.

The variety of models accommodates design flexibility. It is simple to specify, requiring a single model number instead of a host of parts.

For the RWS

  • 4" (10,2 cm) retaining cap and vandal resistant locking grate tops a
    36" (91,4 cm) semi-rigid mesh tube.
  • Factory installed swing assemblies (excluding RWS-BGX) with a 1401 (0.25 gpm; 0,95 l/m), 1402 (0.5 gpm; 1,8 l/m), or 1404 (1.00 gpm; 3,6 l/m) bubbler on a fixed riser makes connecting to lateral lines easy.
  • Optional sand sock is ideal for use in sandy soil.

For the RWS - Mini

  • 4" (10,2 cm) retaining cap and vandal resistant locking grate tops a
    18" (45,7 cm) semi-rigid mesh tube.
  • Factory installed ½" (1.3 cm) spiral barb elbow with a 1401 or 1402 bubbler makes connecting to lateral lines easy.
  • Optional sand sock is ideal for use in sandy soil.

For the RWS - Supplemental

  • 2" (5.1 cm) snap-on cap and base cap enclose a 10" (25,4 cm)
    semi-rigid mesh tube.
  • Factory installed ½" (1.3 cm) spiral barb elbow with 1401 bubbler makes connecting to lateral lines easy.
  • Right size for shrubs.

Minimizes transplant shock

  • Directs water to root ball and adjacent soil.
  • Supplements top-down soaking.

Deeper and broader roots

  • Quicker tree and shrub growth.
  • Provide a stable foundation against high winds.

Subsurface bubbler

  • Reduces waste due to run-off.
  • Minimizes evaporation.

Supports low-volume tubing

  • Orderable without a swing assembly or fittings to support direct connection to a drip system.
  • Grate collar has an integrated clip for ¼” (0.6 cm) tubing.

Aesthetically pleasing appearance

  • Installs at grade level.
  • Minimizes root damage to hardscapes.

Rigid tube design

  • Mesh material allows for horizontal movement of water and oxygen into the root zone and surrounding areas.
  • Supports pea gravel fill to provide better top-to-bottom water dispersion and firmness against root compression.

Connects to traditional irrigation lateral lines

  • Integrated polyethylene swing assembly and spiral barb fittings connect to PVC and PE pipes.
  • Simplifies attachment to watering pipes.

Self-contained and factory-assembled

  • Comes in 3 pre-assembled sizes for design flexibility.
  • Saves time and money by being ready-to-install out of the box.

Minimizes personal injury

  • Reduces above ground risers and surface-level roots people can trip over.

Options for RWS & RWS-M Models

  • Non-potable water grate cover identification.
  • Locking grate cover deters vandalism.
  • Sand sock prevents fine particles from penetrating tube.

Specs

  • RWS: 4" diameter x 36" length (10,2 cm x 91,4 cm)

  • RWS-Mini: 4" diameter x 18" length (10,2 cm x 45,7 cm)

  • RWS-Supplemental: 2" diameter, 10" length (5.1 cm x 25,4 cm)

Model Comparison

RWS Models

RWS-B-C-1401: Root Watering System with 36” (91,4 cm) tube, 0.25 gpm (0,95 l/m) bubbler & check valve on riser, 4” (10,2 cm) grate, versatile swing assembly with 1/2” (15/21) M NPT inlet

RWS-B-1401:  Root Watering System with 36” (91,4 cm) tube, 0.25 gpm (0,95 l/m) bubbler on riser, 4” (10,2 cm) grate, versatile swing assembly with 1/2” (15/21) M NPT inlet

RWS-B-X-1401:  Root Watering System with 36” (91,4 cm) tube, 0.25 gpm (0,95 l/m) bubbler on riser, 4” (10,2 cm) grate, 18” (46 cm) open swing assembly with 1/2” (15/21) M NPT inlet

RWS-B-C-1402:  Root Watering System with 36” (91,4 cm) tube, 0.5 gpm (1,9 l/m) bubbler & check valve on riser, 4” (10,2 cm) grate, versatile swing assembly with 1/2” (15/21) M NPT inlet

RWS-B-1402:  Root Watering System with 36” (91,4 cm) tube, 0.5 gpm (1,9 l/m) bubbler on riser, 4” (10,2 cm) grate, 12” (30.5 cm) versatile swing assembly with 1/2” (15/21) M NPT inlet

RWS-B-C-1404:  Root Watering System with 36” (91,4 cm) tube, 1 gpm (3,8 l/m) bubbler & check valve on riser, 4” (10,2 cm) grate, versatile swing assembly with 1/2” (15/21) M NPT inlet

RWS:  Root Watering System Basic with 36” (91,4 cm) tube, (10,2 cm) grate, ready for customer-provided irrigation hardware

 

RWS - Mini Models

RWS-M-B-C-1401:  Mini Root Watering System with 18” (45,7 cm) tube, 0.25 gpm (0,95 l/m) bubbler & check valve on riser, 4” (10,2 cm) grate, 1/2” (15/21) M NPT inlet spiral barb elbow

RWS-M-B-1401:  Mini Root Watering System with 18” (45,7 cm) tube, 0.25 gpm (0,95 l/m) bubbler on riser, 4” (10,2 cm) grate, 1/2” (15/21) M NPT inlet spiral barb elbow

RWS-M-B-C-1402:  Mini Root Watering System with 18” (45,7 cm) tube, 0.5 gpm (1,9 l/m) bubbler & check valve on riser, 4” (10,2 cm) grate, 1/2” (15/21) M NPT inlet spiral barb elbow

RWS-M-B-1402:  Mini Root Watering System with 18” (45,7 cm) tube, 0.5 gpm (1,9 l/m) bubbler on riser, 4” (10,2 cm) grate, 1/2” (15/21) M NPT inlet spiral barb elbow

RWS-M:  Mini Root Watering System Basic, with 18” (45,7 cm) tube, 4” (10,2 cm) grate, ready for customer provided irrigation hardware

 

RWS Supplemental Models

RWS-S-B-C-1401:  Supplemental Root Watering System with 10” (25,4 cm) tube, 0.25 gpm (0,95 l/m) bubbler & check valve on riser, 2” (5.1 cm) snap-on cap and base, 1/2” (15/21) M NPT inlet spiral barb elbow

RWS-S-B-1401:  Supplemental Root Watering System with 10” (25,4 cm) tube, 0.25 gpm (0,95 l/m) bubbler on riser, 2” (5.1 cm) snap-on cap and base, 1/2” (15/21) M NPT inlet spiral barb elbow

 

RWS Accessories (RWS and RWS-M only)

RWS-SOCK:  Root Watering System Sand Sock

RWS-GRATE-P:  Root Watering System 4” (10,2 cm) Purple Grate for RWS & RWS-M