1/2" NPT X 1/2" NPT Direct Hot Surface Ignition SmartValve® Control With Standard Opening Product Specifications BRANDHoneywell INLET SIZE INCHES1/2 OUTLET SIZE INCHES1/2 FUEL TYPENatural Gas OPENING TYPEStandard DESCRIPTIONDirect Hot Surface Ignition SmartValve Control TYPEStraight-Through LIMITED WARRANTY YEARS1 MANUFACTURER'S PART NUMBERSV9510M2511