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Keystone Figure 221/222 Butterfly Valves

Bonded resilient seat design supports bidirectional and end-of-line duties in both wafer and lugged configurations.

Keystone Figure 221/222 economical bonded resilient seated butterfly valves are designed for bi-directional and end-of-line service available in both wafer (Figure 221) and lugged (Figure 222) style.

Principais características

  • Bubble tight shut-off at full rated pressure in both directions.
  • The F222 lugged version is suitable for bi-directional end-of-line service at full pressure rating.
  • Top and bottom bearings absorbs side thrust loads.
  • A moulded-in O-ring in the seat for flange sealing eliminates the need for flange gaskets.
  • Body locating holes for easy installation and centering between flanges.
  • Extended neck allows adequate clearance for flange and insulation.
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