Keystone Series GR Butterfly Valve with Powered Actuator

Features

• Wafer and lugged body design with face-to-face dimension, according to EN 558 Series 20 and API 609.
• 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.
• The two piece shaft allows for a thin disc and provides minimal obstruction to flow (up to DN 300/ NPS 12).
• Rounded polished disc edge gives full concentric sealing, lower torques, longer seat life and drop-tight shut-off.
• Body locating holes allow ease of installation and centering between the flanges.
• Extended body neck allows for pipe insulation.
• Top and bottom shaft bearings for optimized support and minimum friction and decreased torque.

https://www.emerson.com/documents/automation/data-sheets-series-gr-resilient-seated-butterfly-valves-keystone-en-en-5982440.pdf