500 Series Butterfly Valve

The K-Flo 500 series butterfly valve is a heavy-duty resilient seated butterfly valve line in full compliance with AWWA C504 for use in municipal, power and industrial applications.Every K-Flo 500 Series butterfly valve is tested for performance, as well as seat and body leakage; and all of the valves meet or exceed the latest AWWA C504 standards and requirements. The 500 Series butterfly valves are available in flanged or mechanical joint  configurations. Flanged ends are available on sizes 3” through 20”, while mechanical joints are available on sizes 4” thru 20”.

500 Series Overview
Nominal Inside Diameter 3″-20″ Sizes Available
Construction Materials Body: Cast Iron (ASTM A126, Class B)
Optional Ductile Iron (ASTM A536 Grade 65/45/12)
Seat: Buna-N standard
EPDM optional
Packing: Self-Adjusting Buna-N
Shaft: Stainless Steel
Disc: 316 Stainless Steel standard on 3″-8″. Ductile Iron (ASTM A536, Grade 65-45-12) with a 316 Stainless Steel Edge on sizes 10″-20″.
Bearings: 316 Stainless Steel; TFE Lined
Pressure Rating 150 psi at 16 Ft/Sec


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!