Honeywell SmartValve, Gas Flow Control and Electronic Intermittent Pilot Sequencing , 24Vac, 90 Second Ignition Trial Time, Continuous Retry, 1/2 Psi Pressure Rating, 1/8″ Pressure Tapping, LP Gas, Step Opening, 3/4″x3/4″ NPT, Full Rate 10″ wc, Step Setting 2.5″wc , -40-175 Degree Ambient Temperature Range, 30 Second PrePurge