Keystone Butterfly Valves Figure AR1/AR2. General Purpose Valve. PENTAIR. VALVES & CONTROLS. Resilient seated butterfly valves. AR1 (wafer) (2″ to 36″), . Keystone is either a trademark or registered trademark of Tyco International Services AG or its affiliates in the 60W – Wafer style resilient seated butterfly valve. ANSI Class / (Consult your sales representative for additional drilling standards.) Keystone Butterfly Valves Figure AR1/AR2. General Purpose Valve.

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F89 Pneumatic Quarter Turn Actuator. The Online Industrial Exhibition. Open the catalogue to page 6. Butterfly Valves buttefrly a reliable and robust xatalogue, higher cycle life with lower total cost of ownership. Open the catalogue to page 2. Thin Disc resilient seated butterfly valves Figure wafer and Figure lug are used when sanitary service or corrosion resistance is required. For services where common elastomers are unsuitable, Keystone offers animproved design Figure 24, oriented tochemical, pharmaceutical, cosmetic and food industries.

The effect of dynamic torque is Consult your sales representative for available trims.

Keystone Figure large diameter butterfly valves are offered in sizes from 24″ to 48″ for your larger diameter valve requirements. Open the catalogue to page 5.

Keystone 990 and 920 Butterfly Valve

Triple function, resilient dovetail seat isolates body and stem from line media, provides drop-tight shut-off of line media at full-rated pressure and permits convenient and economical replacement in the field.

Click the X to close this notice. Contact Us View Products. Open the catalogue to page 3.


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.

Keystone Butterfly Valves with a reliable and robust construction, higher cycle life with lower total cost of ownership. Available with PTFE lining for light corrosive services and rubber lining for light abrasive services.

General Applications Technical Data Suited to many applications where tight shut-off is required, such as: Figure wafer style 1″ to 20″ Figure lug style 2″ to 20″ Flange Standard: For more specific information on how catalohue use cookies and to change your cookie preferences, see our Cookie Notice.

How We Use Cookies: Bi-directional, self-adjusting double V-cup stem seals prevent external contaminants from entering the valve. Figure wafer and Figure lug are used when sanitary service or corrosion resistance is required.

Keystone and Butterfly Valve – Flotech Inc

A one piece thin disc stem covered with 3 mmisostatically molded PTFE providing a veryminimum obstruction to flow. The relationship between values are linear, therefore you can interpolate between nominated values. Maintain, preserve, and optimize your assets using predictive, data-driven services and programs. Or, call your Kinetrol experts at Flotech, Open the catalogue to page 4.

Emerson has the answer. The isostatically molded seat is speciallymachined to close tolerances to provide the following advantages: Emerson is where technology and engineering come together to create solutions for the benefit of our customers, driven without compromise for a world in action.


The accurate machining of all valve components, and the combination of safety precautions in the shaft area provide a drop-tight seatsealing and a positive gastight shut-off through the shaft area to atmosphere.

Products – Butterfly Valves|Emerson

BO gastight is available on request. Heavy duty applications include food and beverage, pharmaceutical, pulp and paper, mining and power industries. Open the catalogue to page 8. Experience is only a click away. The seat and disc are the only two valve partsin contact with the medium. Weight may vary depending on trim materials used. Heavy duty, corrosion resistant top bushing provides upper stem support, absorbs actuator sideloading and extends valve butyerfly life.

Succesfull vacuumtests with helium have beenperformed with pressures less than 20 Pa 0,2 millibar. The relationship between values are linear, therefore you can interpolate Integral body locating holes to ease installationand perfect centering of the valve between flanges. The Online Industrial Exhibition. Increase plant level optimization, training, and planning aligned to your business goals. The charted seating and unseating torques are the sum of all friction and includes opening and catslogue of the disc against the indicated pressure differential for normal service.

Minimize downtime and keep your daily operations compliant, running safe, consistent, and economical. We are here to help. Services for Keystone Products.