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  • Keystone Series GR Butterfly Valve with Manual Actuator
Keystone-K-Series GR Butterfly Valve Manual Actuator

Keystone Series GR Butterfly Valve with Manual Actuator

Product Description

The Keystone Series GR is a general purpose resilient seated butterfly valve available in flanged, lugged or wafer body style complete with manual actuator, configurable as a handle or gear operator.

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Features

Keystone Series GR Butterfly Valve
  • 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.
Emerson Manual Actuator
  • ENGINEERED FOR RELIABILTY – Robust construction in a variety of materials with features such as full and life-long lubrication available.
  • FLEXIBLE CONFIGURATION – Where available with the type of manual actuator, the solution can be configured with adjustable travel stops, worm and quadrant style gearboxes and anti-clockwise operation.
  • SIMPLE INSTALLATION – Modular mounting concept for easy attachment to Emerson valves and can be mounted in most orientations.
  • CUSTOMIZABLE OPTIONS – Achieve reliable efficient isolation to match your specific application with many available optional extras including chain wheels, limit switches, floor stands and security features.

Specifications

Keystone Series GR Butterfly Valve
Sizes:
DN 50 - 900 (NPS 2 - 36)
Pressure:
16 bar DN 50 - 300 (230 psi NPS 2 - 12)
10 bar DN 350 - 900 (150 psi NPS 14 - 36)
Reinforced seat:
16 bar DN 350 - 600 (230 psi NPS 14 - 24)
End of line:
10 bar DN 50 - 300 (150 psi NPS 2 - 12)
6 bar DN 350 - 900 (90 psi NPS 14 - 36)
Reinforced seat:
10 bar DN 350 - 600 (150 psi NPS 14 - 24)
Vacuum service:
0.4 bar (5.8 psia)
Temperature:
`-40°C to +160°C (-40 °F to +320°F)
Flange accommodation:
PN 6/10/16, 125/150, JIS 10K, BS Table E, AS4087 PN 16, AS2129 Table E

Documents & Drawings

Keystone Series GR Butterfly Valve
Emerson Manual Actuator