The Spot-Spitter Black high flow spray stake has a 160 degree pattern and 15 GPH flow rate at 20 PSI. It's designed for 15-20 gallon pots or 24-36" boxes, although many growers use multiple blacks to irrigate 48" boxes or larger. The high flow Black is the emitter of choice for large nursery containers.

The Primerus Spot-Spitter, formally known as the Roberts Spitter, is the most efficient way to irrigate mid to large sized nursery containers. The accurate, miniature spray pattern gives full container coverage without overspray, resulting in optimal root development and water savings. A built in shutoff allows spray to easily be stopped when containers are sold./p>

Spot-Spitters are designed to work at 15-25 psi supply pressure. Use Pressure Regulators to be sure your system is in this range.  Also use proper Filtration to avoid clogging from dirty water.  Use Primerus 1/8" Spaghetti Tubingto connect Spitters to your supply laterals.