Dwyer SFI-700 - Manual

NOTE: Read safety precautions on back before installing
or operating!
INSTALLATION
1. Use proper sealing compound on the fitting threads.
2. Check the flow direction arrow on hex to make sure the
sight flow indicator is aligned properly.
3. Attach sight flow indicator to the correct size fittings.
4. Hold the sight flow indicator in place with the correct
size wrench by the hex adjacent to the fitting.
5. Avoid over tightening the fittings or placing stress on
the sight flow indicator.
6. Attach the other side of the sight flow indicator
repeating steps 1-5 above making sure a torque load is
NOT applied across the unit.
OPERATION
1. Gradually introduce the medium into the sight flow
indicator. Avoid any pressure surges.
2. The rotation of the impeller indicates flow. See table
right for minimum flow surges.
2. The rotation of the impeller indicated flow. See table
right for minimum flow values.
3. By rotating the glass axially, the wipers will clean the
inner surface of the glass. Care should be taken while
medium is flowing.
Bulletin F-53
Specifications - Installation and Operating Instructions
Series 700 Sight Flow Indicators
W.E. ANDERSON DIV., DWYER INSTRUMENTS, INC.
P.O. BOX 358 • MICHIGAN CITY, INDIANA 46361 U.S.A.
Phone: 219/879-8000 www.dwyer-inst.com
Fax: 219/872-9057 e-mail: [email protected]
SPECIFICATIONS
Wetted Materials:
Body: Model 700; nickel plated brass.
Model 700 SS; 316 Stainless.
Window: Tempered boroslicate glass.
O-ring: Florelastomer.
Wiper: Florelastomer.
Spindle: 416 Stainless Steel.
Impeller: Acetal plastic.
Temperature Limit: 212ºF (100ºC).
Pressure Limit: 230 psig (1585.8 kPa).
Weight: 1 to 5 lb. (.45 to 2.3 kg) Depending on model.
Options: BSPP or BSPT metric thread forms, less
impeller, bidirectional flow models.
Minimum Flows for Impeller
Rotation (nominal)
Size Water Air
Inches GPM (LPM) SCFM (LPM)
1/4 0.10 (0.38) 1.1 (31.2)
3/8 0.10 (0.38) 1.1 (31.2)
1/2 0.25 (0.95) 2.0 (56.6)
3/4 0.30 (1.14) 2.0 (56.6)
1 0.50 (1.89) 4.0 (113.3)
1-1/4 0.80 (3.03) 5.0 (141.6)
1-1/2 1.0 (3.79) 5.0 (141.6)
Sizes Dim “L” Dim “H”
Inches Inches (mm) Inches (mm)
1/4 & 3/8 2-3/4 (70) 1-1/2 (38)
1/2 & 3/4 3-11/16 (94) 2-1/4 (57)
1, 1-1/4 4-7/8 (124) 2-3/4 (70)
& 1-1/2
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