Honeywell Intermittent Hot Pilot Ignition Smartvalve W/ Standard 35" Wc3/4" NPT x 3/4" NPT Intermittent Hot Surface Pilot Ignition SmartValve Control with standard opening and 3.5" wc pressure regulator setting. Product Specifications BRANDHoneywell INLET SIZE INCHES3/4 OUTLET SIZE INCHES3/4 FUEL TYPENatural Gas OPENING TYPEStandard DESCRIPTIONIntermittent Hot Surface Pilot Ignition SmartValve Control TYPEStraight-Through LIMITED WARRANTY YEARS1 MANUFACTURER'S PART NUMBERSV9601M4571