Threaded Window Sight Flow Indicators
Models
| STW |
Plain NPT Threaded
Window SFI |
| STWF |
NPT Threaded
Window SFI (Flapper) |
| STWR |
NPT Threaded
Window SFI (Rotator) |
| STWD |
NPT Threaded
Window SFI (Drip Tube) |
| STWG |
NPT Threaded
Window SFI (Gaseous) |
The windows are screwed into the single-piece cast sight flow body. These sight flow indicators are available with all five
styles of Penberthy indication.
The threaded window design is an alternative style that is interchangeable with most applications using ANSI 150# sight flow indicators
with bolt-on covers. Instead of unbolting the outer glass covers, these threaded windows are removed for cleaning or replacement
with a spanner wrench.
Spanner wrenches for removing windows are available from Penberthy. The spanner wrenches have a 1/2" drive socket to be used
with a torque wrench. Use the following part numbers to order the appropriate wrench size.
| Part Numbe r |
Sizes (All Models) |
| 8A651-000 |
1/4" and 3/8" |
| 8A651-010 |
1/2" and 3/4" |
| 8A651-020 |
1" |
| 8A651-030 |
1-1/4" and 1-1/2" |
| 8A651-040 |
2" |
Material of Construction for
all Threaded Window Bodies |
Materials of Construction for Covers |
Standard:
ASTM A536 Ductile Iron Gr 65-45-12
ASTM B62 Bronze Alloy 836
ASTM A216 Steel Gr WCB
ASTM A351/A296 316 STS Gr CF8M
Optional:
ASTM 494 Monel Gr M-35-1
ASTM A494 Hastelloy C CW12MW
ASTM A743 Alloy 20 CN7M
Consult Factory for other materials/components |
Brass and 316 stainless Barstock
All Bodies are ANSI 150# regardless of size. |
Dimensions
Standard sizes from: 1/4" to 2"
|
