Honeywell SmartValve, Intermittent Hot Surface Ignition Sequence, 24Vac, 90 Second Ignition Trial Time, Continuous Retry, 1/2 Psi Pressure Rating, 1/8″ NPT Pressure Tapping, Standard Opening, 3/4″x3/4″ NPT, 3.5″wc Regulator Setting, 15 Second PrePurge, 30 Second PostPurge Includes LP Conversion Kit and Two 3/4″x1/2″ Reducer Bushings, -40-175 Degree Ambient Temperature Range