White-Rodgers 36J24-214 universal single-stage combination gas valve, slow-opening, for Hot Surface Ignition (HSI) and Direct Spark Ignition (DSI) systems. 1/2 in x 1/2 in NPT, 24V. Natural gas / LP; includes LP conversion kit (1/2 x 3/8 NPT reducer bushings, regulator set ~3.5 in WC).