The Hayward EPD Series Electric Actuator are heavy duty reversing spring-return for all applications. All models come with, as standard, tow internal limit switches (non-adjustable), and field adjustable voltage ranging from 24V to 230V AC or DC. Field adjustable speeds range from 3 to 10 seconds and have a low power internal heater. Ideal for use with all size ball valves and butterfly valves up to 4 inches in size. Features an aluminium (NEMA 4) die cast housing unit.