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The RAINDRIP INC R338CT is a 1/4-inch drip line tap-off fitting designed to connect 1/4-inch tubing to the existing 1/2-inch male pipe thread of an underground sprinkler riser. Each unit includes a filter cone to help prevent debris from entering the drip line. This fitting is used to tap into an existing sprinkler riser and transition from a pressurized sprinkler supply line into a low-volume drip irrigation system. The package contains 10 fittings. Licensed irrigation contractors and experienced DIYers handling drip system conversions are the primary installers of this component.
The R338CT is suited for residential and light commercial drip irrigation installations where an existing underground sprinkler riser with a 1/2-inch male pipe thread is being converted or supplemented with 1/4-inch drip tubing. It is a practical solution for retrofit drip applications without requiring major changes to the existing sprinkler lateral piping. The included filter cone adds inline filtration at the tap-off point, which is especially useful in systems without a dedicated inline filter upstream.
Designed for use with 1/2-inch male pipe thread underground sprinkler risers and standard 1/4-inch drip irrigation tubing.
Installation is typically performed by irrigation contractors or plumbing professionals familiar with low-pressure drip systems. Shut off the irrigation water supply before making any connections to the riser. Hand-tighten fittings carefully to avoid cracking the fitting body; do not overtighten. Verify that system operating pressure is within the rated range for 1/4-inch drip components before pressurizing the line.
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