Keystone Figure 990/920 Butterfly Valves. KEYSTONE DOUBLE FLANGED BUTTERFLY VALVE FIGURE 631 PN21 TYPICAL SPECIFYING SEQUENCE F631 21 DIH2 400 AF Figure number Pressure rating Trim code Valve size End connections VALVE TRIMS Trim Body Disc Shaft Seat DIH2 S.G. Iron Ali. An economical bonded resilient seated butterfly valve for bi-directional and end-of-line service• F221 Wafer style valve• F222 Lugged style valve. 2. Keystone Series GRW/GRL Butterfly Valves. Valve size shown is the 100 mm; other sizes show different configurations. Disc-stem 6. 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. Features. Throttling characteristics are shown in the same manner with Cv’s at the various disc openings. 6. • Each valve is factory tested to 110 percent of specified pressure rating, helping ensure bubble-tight shut-off to the full valve rating when bolted between flanges in either direction of media flow. 2.3 Incorrect use The butterfly valve is not suitable for use in gas systems. Keystone manual, electric, pneumatic and hydraulic actuators. Keystone Series GR Butterfly Valve Keystone 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. Bubble tight shut-off at full rated pressure in both directions. KEYSTONE FIGURE 9 BUTTERFLY VALVE VALVE DATA Kv VALUES Disc opening Size in mm 25 40 50 65 80 100 125 150 200 250 300 350 400 450 500 SIZING TORQUES (Nm) ΔP in bar Size in mm 25 40 50 65 80 100 125 150 200 250 300 350 400 450 500 MAXIMUM ALLOWABLE SHAFT TORQUES (Nm) Shaft mat. 2.2 Application area The butterfly valve has been designed for use in the food & beverage, pharmaceutical and light chemical industries. Keystone manual, electric, pneumatic and hydraulic actuators. size range Dn 50-900. tightness class en 12266-1 rate a. Size in mm 25 40 50 65 80 100 125 150 200 250 300 350 400 450 500 NOTE * Rubber covered … Bubble tight shut-off at full rated pressure in both directions. Features. • Each valve is factory tested to 110 percent of specified pressure rating, helping ensure bubble-tight shut-off to the full valve rating when bolted between flanges in either direction of media flow.

See Table 1 for tabulated Cv’s for the Figure AR1/AR2 Butterfly Valve. * in case of super seat F = 100, G = 60, R = 53, keysize 18 x 11 7. Home Products Butterfly Valves Keystone Series 221/222 Butterfly Valves. the combined action of seat geometry and the elastic metal insert guarantees a long lasting bidirectional tight shutoff.

For investment cast Keystone Butterfly Valves Figure AR1/AR2 General Purpose Valve Throttling characteristics are shown in the same manner with Cv’s at the various disc openings. Valve sizes shown are the DN 100 and DN 500. Valve sizes DN 900/1000 have no separate lugs, but a double flange design. Keystone Butterfly Valves Figure AR1/AR2 General Purpose Valve DN 25 and DN 40 valve assemblies with stainless steel body are furnished with integral 10-position throttling plate. The higher the Cv, the greater the flow and the better the control characteristics. Keystone Series 221/222 Butterfly Valves.

5. Bronze 431 S/S EPDM DEH2 S.G. Iron 316 S/S 431 S/S EPDM End connection (flat faced): AF = AS 2129 Table F CL21 = AS/NZS … Features. Keystone Figure 990 and 920 resilient seated ButterFly ValVes METRIC DATA notes 1. The higher the Cv, the greater the flow and the better the control characteristics. Lower body 7. Designed according to EN 593 and API 609. 4. through the valve.

KEYSTONE SERIES GR RESILIENT SEATED BUTTERFLY VALVES GRW/GRL PARTS LIST Item Qty Description 1 Body 2 1 Seat 3 1 Disc 4 1 Upper shaft 5 1 Lower shaft 6 1 Upper bushing 7 1 Packing 8 1 Body circlip 9 1 Shaft circlip 10 2 Upper and lower bearing 11 1 Plug PARTS LIST Item Qty Description 1 1 Body 2 1 Seat 3 1 Disc 4 1 Shaft 5 1 Bushing 6 1 Shaft circlip 7 1 Body circlip 8 1 Body O-ring 9 1 …

“H” dimension refers to flat on stem. 2. Long Lasting Butterfly Valves with a Sturdy Reputation Emerson’s Keystone offer a complete range of butterfly valves from general purpose through to heavy duty and high performance models. Body screws notes 1. Shaft seal 3. for information see separate data sheets. 2.1 Valve use The Keystone F250 and F251 hygienic butterfly valves are universal valves for manual or automated isolation and control.

Bushing 2. Keystone HiLok HigH Performance ButterfLy VaLVes seat options hiloK rtFe seat the seat is made of filled rtfe in order to minimize cold flow effects at high temperatures. General Application Ideally suited for many applications.