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