47 series & Mechanical Seat

The K-Flo series is a large diameter valve line designed for a wide variety of liquid and gaseous applications. With over 50 years of service in the field, the valve is fully compliant with AWWA C504 requirements.

47 Series Overview
Nominal Inside Diameter 24″-168″ Sizes Available
Construction Materials Body: Cast Iron (ASTM A126, Class B)
Ductile Iron (ATM A536, Grade 65-45-12)
Seat: Buna-N standard
EPDM Optional
Shaft: Stainless Steel
Disc: Ductile Iron (ASTM A536, Grade 65-45-12) w/ 316 Stainless Steel Edge
Bearings: TFE Lined with Fiberglass backing
Pressure Rating Class 150 and Class 250


Crispin Valve offers a wide variety of special materials for butterfly valves that may not be listed. If your project may need such materials please feel free to contact our Sales/ Customer Service team for any inquiries you may have!