Real Fyre replacement pressure regulator. Please note: 1/2" inlet, 3/8" outlet. Not convertible to LP. Natural Gas onlyG45 Glass Burner with SPK-26, APK-15 or APK-17 control valveG45 Log Burner with SPK-26 (24"-36" burners), APK-17 (24"-36" burners) and APK-15 control val..