Our website uses cookies. By continuing to browse our site you are agreeing to our Cookie Policy.
Back To Top
Long Lasting Butterfly Valves with a Sturdy Reputation Long Lasting Butterfly Valves with a Sturdy Reputation

Butterfly Valves with a reliable, robust construction, and higher cycle life with lower total cost of ownership

Keystone 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 built its reputation on providing industrial process butterfly valves known for their reliability, long service life, and reduced operating costs. Independent, third-party life-cycle testing has shown that Keystone resilient-seated butterfly valves last 2.5 times longer than competitors' butterfly valves.

Keystone Figure 360/362 and 370/372 K-LOK High Performance Butterfly Valve
Featured

Keystone Figure 360/362 and 370/372 K-LOK High Performance Butterfly Valve

K-LOK Figure 360/362 unique two-piece shaft and double-offset disc/shaft design allows for high cycling and creates a lower disc profile with increased capacity.
Discover Keystone
Keystone Series GR Butterfly Valve
Featured

Keystone Series GR Butterfly Valve

The Keystone Series GR is a general purpose resilient seated butterfly valve available in flanged, lugged or wafer body style for any service where drop-tight shut-off and maximum flow area is required.
Discover Keystone

Products

Keystone Butterfly Valves
Keystone Butterfly Valves
Looking for performance and quality from your Butterfly Valves? R.E. Mason has the answer.
Keystone Actuators
Keystone Actuators
Pneumatic and electric quarter-turn actuators for general purpose, hazardous area applications, and accurate control of valves
Keystone Check Valves
Keystone Check Valves
Keystone Check Valve portfolio covers all your process needs; regardless of temperature, pressure or application.

Services

Repair Services

All makes and models of valves and actuators can be serviced by our experienced technicians. We can perform inspection and repair services both in our shop and at your facility.
 
  • Isolation, gate, globe and check valves
  • Ball, butterfly and plug style valves
  • Electric, pneumatic and hydraulic actuators
  • Pressure relief valves including tank relief assets
  • Integral Shop and Field Welding capability

Field & Depot Services

Our repair technicians are available 24/7 to meet your services requirements. Shop repair as well as full field service is only a phone call away. Our 53’ Mobile Machine shop and various tooling trailers are ready to mobilize at a moment’s notice.