Keystone Series 61 Resilient Seated Butterfly Valve, 2" to 12"0 pages

Keystone Butterfly Valves - Series 61
Keystone Butterfly Valves - Series 61
2" thru 12"
2" to 12"

• 61W - Wafer style resilient seated butterfly valve
• 61L - Lugged style resilient seated butterfly valve

Features
• Rounded polished disc edge gives full
concentric sealing, lower torques,
longer seat life and bubble-tight
shutoff.
• The seat is field replaceable and fully
isolates the body and stem from
the flow.
• Primary stem sealing exceeds the
pressure rating of the valve and
prevents leakage through stem area
to atmosphere.
• A secondary stem seal provides
backup sealing.
• Top and bottom inboard stem bearings
for optimum support and minimum
friction to prolong valve life.
• Top bushing absorbs actuator side
thrust loads.
• Top seal helps prevent moisture
penetrating into the stem area.
• Thin disc design provides minimum
obstruction to flow, resulting in smooth
flow characteristics.
• A molded-in O-ring in the seat for
flange sealing eliminates the need
for gaskets.
• Extended body neck allows for
pipe insulation.
• Body locating holes ease installation
and centering between the flanges.
• Available approvals: PED (CE Mark),
DNV, Lloyds.

General Applications

Technical Data

Suited to many applications where tight
shut-off is required, such as:

Size Range:

2" to 12"

Pressure:

235 psi

End of line:

150 psi

Temperature:

-40°F to +300°F

• Industrial Processing
• Water and Wastewater
• Dry Bulk Conveying
End Connection: ASME 125/150
• Paper Mills
• Light Slurry Handling
• Food and Beverage
• HVAC
• Transportation

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