Honeywell 1/2"X1/2" Intermittent Hot Pilot Ignition Smartvalve W/ Fast-Fast 34" Wc1/2" NPT x 1/2" NPT Intermittent Hot Surface Pilot Ignition SmartValve Control with fast-fast opening and 3.4" wc pressure regulator setting. Product Specifications BRANDHoneywell INLET SIZE INCHES1/2 OUTLET SIZE INCHES1/2 FUEL TYPENatural Gas OPENING TYPEFast-Fast DESCRIPTIONIntermittent Hot Surface Pilot Ignition SmartValve Control TYPEStraight-Through LIMITED WARRANTY YEARS1 MANUFACTURER'S PART NUMBERSV9501M8129