The Keystone F171 is a three-piece Ball Valve with an ISO 5211 mounting plate.
Features
Patented “SEALMASTER” stem arrangement for 1/2″ (full bore) and larger sizes
Double stem seal design complies with TA-LUFT fugitive emission requirements
Three-piece swing out design
ISO 5211 top mounting plate
End connections flanged, screwed, butt weld or socket weld
Carbon steel or stainless steel bodies