Electric ball valve Central air conditioning heating and refrigeration automatic control system two-wire three-wire AC/DC general valve

	WRA-53 Series	220v ON/OFF, 3-Point
	WRA-63 Series	220V/110V/24V  ON/OFF, 3-Point
	WVA4-.. Series	220V/24V  ON/OFF, Proportional
	WRA3-.. AC Series	220V/110V/24V  ON/OFF, 3-Point
	WRA-42 DC Series	24V/12V/3V  ON/OFF, 3-Point
	WRA3-.. DC Series	24V/12V/3V, ON/OFF, Proportional