Glossary

Electric Valve

Valve equipped with a device (solenoid) for remote control by a controller via low voltage wire ( 9 volts or 24 volts)

Emitter

A small watering device which delivers water at very low rate (measured in liters per hour) and pressure at the outlet port.

Et Or Evapotranspiration

The amount of water lost due to evaporation from the soil and transpiration from the plants. ET is used by Smart Controllers to help determine the amount of watering needed by a landscape.

External Manual Bleed

A feature which allows an automatic valve to be opened manually (without controller) by releasing water from above the diaphragm to the outside of the valve. Useful during installation, system start-up and maintenance operations.