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Keystone Valves is ARRA Compliant



 

Butterfly Valves
Figure 990/920
Split Body Single Piece Disc-Stem

Size Range:
Figure 990 (wafer style) 1" – 20”
Figure 920 (lug style) 2" – 20”

Pressure Rating:
1" - 12" Metal Disc Stem - 150 psi
2" - 12" Molded Disc Stem - 100 psi
14" - 20" Metal or Molded Disc Stem - 75 psi

Flange Standard:
ASME 125 / 150

Used when sanitary service, corrosion or erosion resistance is required in isolation or control valve applications in high performance as found in the chemical, food and beverage, pharmaceutical, pulp and paper, mining and power applications.

The highest Cv's, lowest pressure drops and the best control characteristics are obtained due to the one-piece, thin profile, disc-stem.

This one-piece disc stem is available in 316 stainless steel, fluoropolymer or elastomer molding.

The 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.


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