AWWA C504 Butterfly Valves are used in water and wastewater systems for shut off of liquids and gas medium. Double eccentric design with resilient seat provides tight shutoff, are easy to operate even with large pressure differential and requires little space for installation. High strength ductile iron body used for lowering the weight and improving long term durability. AWWA C504 Butterfly Valves can be used for isolation or throttling application. Double eccentric design butterfly is used for lowering the friction between the disc and the seat. The shaft and disc are connected by tangential pins. These provide a strong connection and are exchangeable to increase the lifetime of the valve. Valve design is compliant with AWWA C504 & API 609.
Soft Rubber Seat in Body
When the rubber seat of a butterfly valve is located on the moving disc edge, it will erode or tear away as it plows its way through line buildup, causing the valve to leak. KFTE AWWA C504 Butterfly valve with a rubber seat in body design, the stainless steel disc edge provides the resistance necessary to plow through line buildup without seat-on-disc edge damage.
Stainless Steel Disc Edge
Solid 316 stainless steel disc edge provides the corrosion and abrasion resistance essential for long-lasting, maintenance-free service. The stainless steel disc edge is on all disc materials including iron, carbon steel and aluminum bronze discs.
Offset Disc Design
The offset disc provides an uninterrupted 360° sealing surface. The sealing surface is not interrupted by the valve shaft and does not have any continuous contact points between the rubber seat and the disc edge. This results in a longer seat life.
Adjustable, Replaceable Seat
As required by AWWA C504, the rubber seat in body design offers field adjustment and replacement capabilities. Proper field adjustment can be performed from either the upstream or downstream side of a pressurized valve.
| Material Specification | ||
| NO. | DESCRIPTION | DUCTILE IRON |
| 1 | KEY | STEEL |
| 2 | SUPPORT | DUCTILE IRON |
| 3 | GLAND | DUCTILE IRON |
| 4 | PACKING GLAND | DUCTILE IRON |
| 5 | BODY | DUCTILE IRON |
| 6 | UPPER BUSHING | BRONZE |
| 7 | O-RING | NBR |
| 8 | UPPER SHAFT | SS410 |
| 9 | SCREW PIN | SS410 |
| 10 | NUT | STAINLESS STEEL |
| 11 | GASKET | STAINLESS STEEL |
| 12 | DISC | DUCTILE IRON+SS316 EDGE |
| 13 | LOWER SHAFT | SS410 |
| 14 | LOWER BUHSING | BRONZE |
| 15 | FRICATION REDUCE COVER | DUCTILE IRON |
| 16 | O-RING | NBR |
| 17 | BOTTOM COVER | DUCTILE IRON |
| 18 | NUT | STAINLESS STEEL |
| 19 | BOLT | STAINLESS STEEL |
| 20 | GLAND | SS304 |
| 21 | STUD | STAINLESS STEEL |
| 22 | NUT | STAINLESS STEEL |
| 23 | GASKET | STAINLESS STEEL |
| 24 | SEAT | EPDM |
| 25 | SEALING RING | RUBBER |
| 26 | PACKING GLAND | BRONZE |
| 27 | WORMGEAR | - |
