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| PRODUCTS |
| Butterfly Valves |
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| In 1951 Keystone Valves launched a new valve concept - the rubber seated butterfly valve. Since then, through constant innovation and customer feedback, Pentair offers trims and sizes of butterfly valves to suit most applications having to do with isolation and control of liquids, gases or slurries. By both mechanical and polymer engineering Keystone butterfly valves have a strong focus on providing valves that offer long life through high cycle capabilities. Benchmarking ensures Keystone remains a leader in this critical area against other makers of butterfly valves for the process sectors. |
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Resilient Seated
Brand: Keystone |
| Model: Figures 990, 920 and 991 |
Used when sanitary service, corrosion or erosion resistance is required in isolation or control valve applications. These high performance applications are found in food and beverage, pharmaceutical, pulp and paper, mining, and power industries.
• One-piece, thin profile, disc-stem provides minimum obstruction to flow resulting in highest Cv , lowest pressure drops and best control characteristics.
• One-piece disc-stem is available in 316 stainless steel, polymer or elastomer molding.
• Triple-function seat provides bi-directional drop-tight shut-off, isolates the valve body and stem from the line media, and also serves as the flange seal.
• Dovetail seat retention allows convenient and economical seat replacement.
Size range: Figure 990 (wafer style) 1" to 20" [Dn 25 to 500] Figure 920 (lug style) 2" to 20" [Dn 50 to 500]
Pressure rating: 1" to 12" [Dn 25 to 300] Metal disc-stem – 150 psi [10 barg]
2" to 12" [Dn 50 to 300] Molded disc-stem – 100 psi [7 barg]
14" to 20" [Dn 350 to 500] Metal or molded disc-stem – 75 psi [5 barg]
Flange standard: ASME Classes 125 and 150 |
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| High Performance Butterfly Valves |
Ideally suited for many general valve applications such as liquid and gas transmission for isolation and control as found in cooling systems, water treatment, chemical, mining, food and beverage as well as bulk handling. • One-piece body with extended neck allows clearance for flanges and insulation. • Triple function seat provides bidirectional drop-tight shut-off, isolates the valve body and stem
from the line media and also serves as the flange seal.
• Dovetail seat retention allows convenient and economical seat replacement.
• 32 AARH polished disc edge provides extended cycle life.
Size Range: Figure AR1 (wafer style) 2” thru 36”
Figure AR2 (lug style) 2” thru 24”
Pressure Rating: 2” thru 12” 175 psi, 14” thru 36” 150 psi
Flange Standard: ANSI 125/150 |
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