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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Products – Butterfly Valves|Emerson

Catalogue excerpts A one piece thin disc stem covered with 3 mmisostatically molded PTFE providing a veryminimum obstruction to flow. Triple function, resilient dovetail seat cataogue 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.

For services where common elastomers are unsuitable, Keystone offers animproved design Figure 24, oriented tochemical, pharmaceutical, cosmetic and food industries.

Increase plant level optimization, training, and planning aligned to your business goals. Experience is only a click away. Services for Keystone Products.

They are available in a variety of trims to meet your higher pressure and temperature requirements. Heavy duty, corrosion resistant top bushing provides upper stem support, absorbs actuator sideloading and extends valve cycle life.

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Butterfly Valves

The charted seating and unseating torques are the sum of all friction catalogeu includes opening and closing of the disc against the indicated pressure differential for normal service.

  UAA146 PDF

Looking for performance and quality from your Butterfly Valves? How We Use Cookies: Click the X to close this notice. Available with PTFE lining for light corrosive services and rubber lining for light abrasive services. Open the catalogue to page 6.

The Online Industrial Exhibition. The Online Industrial Exhibition. Integral body kystone holes to ease installationand perfect centering of the valve between flanges.

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

The isostatically molded seat is speciallymachined to close tolerances to provide the following advantages: General Applications Technical Data Suited to many applications where tight shut-off is required, such as: Weight may vary depending on trim materials used. The relationship between values are linear, therefore you can interpolate Figure wafer and Figure lug are used when sanitary service or corrosion resistance is required.

The effect of dynamic torque is Independent, third-party life-cycle testing has shown that Keystone resilient-seated butterfly valves last keystonw. Silver plating For severe applications catalogu plated trim configuration available. Open the catalogue to page 2. Secondary shaft seal by oversizing the shaftdiameter in relation to the shaft hole in the seat.

Open the catalogue to page 8. Keystone Figure large diameter butterfly valves are offered in sizes from 24″ to 48″ for your larger diameter valve requirements. Keystone Butterfly Valves with a reliable and robust construction, higher cycle life with lower total cost of ownership.

Keystone Valves – Keystonevalves

Succesfull vacuumtests with helium have beenperformed with pressures less than 20 Pa 0,2 millibar. Emerson has the answer. Operated a minimum of once per day.


Open the catalogue to page 5. 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 seat and disc are the only two valve partsin contact with the medium.

Keystone 990 and 920 Butterfly Valve

Simplified Sizing Formulas Liquid Where: Thin Disc resilient seated butterfly valves Figure wafer and Figure lug are used when sanitary service or corrosion resistance is required. Train new hires, improve current workforce skills, and learn about new technology and products.

Maintain, preserve, and optimize your assets using predictive, data-driven services and programs. Or, call your Kinetrol experts keysstone Flotech, Minimize downtime and keep your buttervly operations compliant, running safe, consistent, and economical.

Contact Us View Products. 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. Heavy duty applications include food and beverage, pharmaceutical, pulp and paper, mining and power industries.

F89 Pneumatic Quarter Turn Actuator. Open the catalogue to page 3. Open the catalogue to page 4. BO gastight is available on request. Bi-directional, self-adjusting double V-cup stem seals prevent external contaminants from entering the valve. We are here to help. Consult your sales representative for available trims.