Obsolete Nordyne natural gas valve for furnaces with pilot light. To light pilot, turn knob to pilot, push red button, light pilot, release red button in 1 minute. 1/2" inlet on left, 1/2" outlet on right. 24V, .39 amps. Manufacturer numbers on valve are SX220KR-45 and 220-221328-6369. Manufacturer number on operator is 217-2001-01. No longer made, limited to stock on hand.