Precision Liquid Injection Pumps for Commercial Agriculture

Ozawa 400 & 500 series fertilizer injection pumps — accurate, efficient, and field-proven since 1986. Trusted by farmers, nurseries, and golf courses across the United States.

Ozawa commercial liquid injection pump with dual meters
Made in the USA
Field-Proven Since 1986
Orange, CA

Liquinox has been specifying and installing Ozawa liquid injection systems since 1986. The Ozawa pump line — the 400 series and 500 series — is the commercial standard for proportional fertilizer injection in drip, micro, sprinkler, pivot, and flood irrigation. We carry the full model range and provide system design support for any scale of operation.

Ozawa 400 series liquid injection pump

400 Series

Pressure
150 PSI max
Flow
Up to 36 GPH per head
Heads
1, 2, 3, or 4 chemical heads
Motor
120V AC or 24V DC

The workhorse of the Ozawa line. Handles mid- to large-scale irrigation systems for vegetable farms, nurseries, and golf courses.

View 400 Series specs →
Ozawa 500 series high-capacity injection pump

500 Series

Pressure
180 PSI max
Flow
Up to 56 GPH
Heads
1 or 2 chemical heads
Motor
120V AC or 24V DC

Built for the highest demands — large pivot systems, high-pressure commercial lines, and heavy-duty agricultural operations.

View 500 Series specs →
Ozawa liquid injection pump installed on commercial irrigation line
Installed and running. Ozawa systems mount directly to existing 2"–12" irrigation pipe with standard saddle clamps.

Built for Every Commercial Irrigation System

Vegetable farms, golf courses, nurseries, cannabis cultivation, drip tape, center pivot, flood irrigation — if liquid flows through a pipe, an Ozawa pump can meter it precisely. Inject up to four different chemicals simultaneously from a single unit.

Commercial irrigation flow system with Ozawa injection