Available in NPT threaded-end and flanged designs, these sight flow indicators meet most standard installation requirements. Made from single-piece cast-construction bodies, these SFIs are available with all four styles of Penberthy indication.
Threaded window sight flow indicators are labelled with the company logo as well as pressure and temperature ratings. Available in NPT threaded-end designs, all threaded window sight flow indicator sizes meet ANSI 150 pressure class standards. They are available with all four styles of Penberthy indication.
SF: NPT SFI (plain)
SFF: NPT SFI (Flapper)
SFR: NPT SFI (rotator)
SFD: NPT SFI (drip tube)
SF-F: Flanged SFI (plain)
SFR-F: Flanged SFI (rotator)
SFD-F: Flanged SFI (drip tube)
STW: NPT threaded window SFI (plain)
STWF: NPT threaded window SFI (flapper)
STWR: NPT threaded window SFI (rotator)
STWD: NPT threaded window SFI (drip tube)
