The DelVal Series 57 has been developed with extensive application, design and manufacturing expertise.  These products are produced by employing modern manufacturing practices under a robust quality assurance system.  These practices ensure consistent product quality and dependable performance.
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Series 56 and 57 valves image

Resilient Seat (High Flow) Butterfly Valve
Series 56 and 57 valves image

Resilient Seat (High Flow) Butterfly Valve
Type N/A Resilient seated high flow disc
Size N/A 50-600 mm/ 2"-24"
Body Material N/A Cast iron, ductile iron (Wafer and lug type)
Disc N/A Ductile iron (Nylon/aroxy coated) CF8/CF8M
Seat N/A Buna N/ EPDM
Stem N/A SS 410/316/CS+zinc plated
Operation N/A Lever/gearbox/pneumatic/electric actuator
Temperature °C N/A -25 to 150
Pressure N/A PN10/PN16
Manufacturer N/A DelTech