Product Overview

269
Sight Flow Indicators
FLOW
MIDWEST SIGHT FLOW INDICATORS
Inexpensive Protection for Expensive Equipment and Systems
MODEL CHART
SFI-300F - WINDOW STYLE WITH FLANGED CONNECTIONS
Example SFI -360FSS -1-1/2 -G1 SFI-360FSS-1-1/2-G1
Model
Designator
SFI Sight ow indicator
Body Style 350FCS
350FSS
360FCS
360FSS
Carbon steel body, no moving indicator
316 SS body, no moving 316 SS indicator
Carbon steel body, 316 SS apper
316 SS body, 316 SS apper
Body Size 1-1/2
2
3
4
6
1-1/2 inch raised face ange connection size
2 inch raised face ange connection size
3 inch raised face ange connection size
4 inch raised face ange connection size
6 inch raised face ange connection size
Options G1
G2
PTFE gasket
Fluoroelastomer gasket
MODEL CHART
SFI-700 - TUBE STYLE WITH THREADED CONNECTIONS
Example SFI -700SS -1-1/2 -BSPT SFI-700SS-1-1/2-BSPT
Model
Designator
SFI Sight ow indicator
Body Style 700
700SS
Brass body
316 SS body
Body Size 1/4
3/8
1/2
3/4
1
1-1/4
1-1/2
1/4 inch female NPT connection size
3/8 inch female NPT connection size
1/2 inch female NPT connection size
3/4 inch female NPT connection size
1 inch female NPT connection size
1-1/4 inch female NPT connection size
1-1/2 inch female NPT connection size
Options BSPT
BSPP
BSPT threads
BSPP threads
MODEL CHART
SFI-400 - TUBE STYLE WITH THREADED OR FLANGED CONNECTIONS
Example SFI -400SS -1-1/2 SFI-400SS-1-1/2
Model
Designator
SFI Sight ow indicator
Body Style 400CI
400SS
400F
Female NPT connections, cast iron body (only
for 1 through 2 inch sizes)
Female NPT connections, 316 SS body
Raised face ange connection, 316 SS body
(only for 1 inch and up sizes)
Body Size 1/2
3/4
1
1-1/4
1-1/2
2
3
4
1/2 inch connection size
3/4 inch connection size
1 inch connection size
1-1/4 inch connection size
1-1/2 inch connection size
2 inch connection size
3 inch connection size
4 inch connection size
Note: Best for use in vertical pipelines where there are no mechanical strains.
MODEL CHART
SFI-100 & SFI-300 - WINDOW STYLE WITH THREADED CONNECTIONS
Example SFI -300 SS -2 -G2 SFI-300SS-2-G2
Model
Designator
SFI Sight ow indicator
Body Style 100
300
350
360
Single window, bronze body, ABS impeller
Double window, bronze body, ABS impeller
Double window, bronze body, no moving
indicator
Double window, bronze body, 304 SS
apper
Body
Options
SS
MP
316 SS body option for 300, 350, 360
150 psig maximum pressure option,
includes uoroelastomer gaskets
Body Size 1/4
3/8
1/2
3/4
1
1-1/4
1-1/2
2
1/4 inch connection size
3/8 inch connection size
1/2 inch connection size
3/4 inch connection size
1 inch connection size
1-1/4 inch connection size
1-1/2 inch connection size
2 inch connection size
Options W2
G1
G2
S2
S3
I1
I2
I3
F1
BSPT
BSPP
Plexiglass window
PTFE gasket
Fluoroelastomer gasket
316 SS shaft (not on 350 model)
Monel shaft (not on 350 model)
ABS impeller with bronze bushing (not on
350, 360)
316 SS impeller (not on 350, 360)
No impeller (100 only)
316 SS apper (360 only)
BSPT threads
BSPP threads
Note: Maximum ow on impeller models: 5 FPS with liquids, 5000 FPM with gases.
SERIES SFI-100, SFI-300, SFI-300F, SFI-400 & SFI-700 | W. E. ANDERSON
™
BY DWYER
®
DWYER INSTRUMENTS, INC. | dwyer-inst.com
USA: California Proposition 65
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Flow_2021.indb 269 7/15/20 12:03 PM