A heavy duty double flanged concentric design resilient seated butterfly valve

Features

• Double flanged body design with face-to-face dimensions, according to EN 558 Series 20, API 609 and AWWA C504 short.
• Designed according to EN 593 and API 609.
• The seat is field replaceable and fully isolates the body and shaft from the flow.
• Primary shaft sealing exceeds the pressure rating of the valve and prevents leakage through shaft area to atmosphere.
• A secondary shaft sealing provides back-up safety.
• A molded-in O-ring in the seat for flange sealing eliminates the need for gaskets.
• Shaft seals prevent moisture penetrating into the shaft area.
• Rounded polished disc edge gives full concentric sealing, lower torques, longer seat life and drop-tight shut-off.
• Extended body neck allows for pipe insulation.
• Actuator flange according to ISO 5211.
• Top and bottom shaft bearings for optimized support and minimum friction and decreased torque.
• Top bushing absorbs actuator side thrust loads.