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Keystone Butterfly Valves Keystone Butterfly Valves
Keystone GRW GRL

A complete butterfly valve line to provide optimal performance.

Emerson's Keystone portfolio offers a complete range of butterfly valves from general purpose through to heavy duty and high performance models.  With a tradition of more than 70 years, Keystone has built its reputation on providing industrial process butterfly valves known for their reliability, long service life and reduced operating costs.

Keystone Family of Products

Control Valves

Butterfly valves offer true isolation and control capabilities in a single product. Designed for accurate flow and pressure control, they are ideal in applications where positive isolation is required.
Butterfly valves offer reliable high-cycle service for applications in the Oil & Gas (upstream and downstream), Energy (power and steam distribution), Chemical, Petrochemical, Pulp & Paper, HVAC (Institutional), Water and Waste Water Treatment, Life Science and Food & Beverage industries. Butterfly valves can replace gate, ball and globe valves very cost-effectively.
Keystone K-LOK Series

High Performance

Suitable for throttling applications that require extremely low leak rates.
Keystone Series 221 222

Resilient Seated

The preferred solution for sanitary and corrosion or erosion resistance in control or isolation applications.

Cornerstone has the Keystone valves inventory and experience to specify and deliver the optimal butterfly solution to meet your application and specification needs and requirements.

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