Dual-Window Sight Flow Indicators

Dual-Window Sight Flow Indicators provide two glass discs on each side, so that if either glass should fail for any reason, the other window can temporarily withstand pressures until the unit can be repaired or replaced. Dual-Window Sight Flow Indicators and Factory Mutual System Approved Dual-Window Sight Flow Indicators are available in 150# NPT Models and 150# and 300# Flanged Models.

Models

150# NPT Dual-Window
Plain Dual-Window NPT SFI..................DWF
Dual-Window NPT SFI (Flapper)............DWFF
Dual-Window NPT SFI (Rotator)............DWFR
Dual-Window NPT SFI (Drip Tube).........DWFD
Dual-Window NPT SFI (Gaseous)..........DWFG

150# Flanged Dual-Window
Plain Dual-Window Flanged SFI.......................DWF-F
Dual-Window SFI Flanged (Flapper).................DWFF-F
Dual-Window SFI Flanged (Rotator).................DWFR-F
Dual-Window SFI Flanged (Drip Tube)..............DWFD-F
Dual-Window SFI flanged (Gaseous)................DWFG-F

300# Flanged Dual-Window
Plain Dual-Window Flanged SFI......................DWM-F
Dual-Window SFI Flanged (Flapper)................DWMF-F
Dual-Window SFI Flanged (Rotator)................DWMR-F
Dual-Window SFI Flanged (Drip Tube).............DWMD-F
Dual-Window SFI Flanged (Gaseous)..............DWMG-F

For 150# NPT Dimensions, click here

For 150# Flanged Dimensions, click here

For 300# Flanged Dimensions, click here