Bell & Gossett 110193 FB-38TU Lead Free Water Pressure Reducing Valve With 1/2" FNPT X 1/2" MNPT Threaded Union Connection And Fast Fill Feature Specifications: 1/2" FNPT X 1/2" MNPT Threaded Union Connection Factory Set @ 12 PSI Adjustable Pressure Range 10-25 PSI Has Fast Fill Lever Replaces Sid Harvey B138-12 & B138-12R