UC Master Gardener Program of Sonoma County

University of California

UC Master Gardener Program of Sonoma County

Drip Irrigation Basics

Installing drip irrigation involves using specialized equipment. Become familiar with the following essential basic components:

Filters/Pressure Regulators

Changing from sprinkler to drip irrigation requires the addition of a filter to prevent emitter clogging and a pressure regulator to achieve 20-30 PSI.


filter casing containing a screen filter	pressure regulator	combination filter and pressure regulator (not for use with wells)

Key Points for Conversion of Sprinkler to Drip Irrigation

Sprinkler to Drip Irrigation Conversion

1/2'’ Inline drip and distribution tubing

½ inch tubing is the most common way to move water to the plants.

Emitters are small plastic parts that ‘emit’ controlled amounts of water. Pressure-compensating emitters are preferred as they provide the same flow over a wide pressure range. These emitters are also less prone to clogging.

½” inline drip tubing has embedded emitters regularly spaced at 12, 18 or 24 inches.


½” inline drip tubing	½” inline drip tubing emitter

½” distribution tubing with added point source emitters can also be used.


1/2" distribution tubing	½” distribution tubing + point source emitter

Fittings for ½” inline drip and ½” distribution tubing

These are the basic fittings to connect elements of drip system equipment.

Note that these are all “locking” fittings.


1/2" locking fittings connector.	1/2” tee connector	½” elbow connector

hose-end	line-end with cap	coupler with ball valve (shut-off)

goof plugs	goof plug in ½” distribution tubing	irrigation line staple

1/4'’ Inline drip and distribution tubing

Some applications (such as a veggie garden or in a pot) will use ¼” inline drip and ¼” distribution tubing.


¼” inline drip tubing	¼” distribution tubing

Fittings for ¼” tubing


connectors	some applications (such as a veggie garden or in a pot) will use ¼” inline drip and ¼” distribution tubing.	1/4” inline drip tubing with goof plug

micro-flow valve	irrigation line staples	emitter

Stores that specialize in irrigation are the best sources of irrigation equipment and supplies. They generally have a good selection of parts and knowledgeable staff.

The topics outlined below will help you install a drip system.