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F61 Series
Flow Switch (Standard Flow Rate -
SPDT)
Description
The F61 Series Flow Switches are Single-Pole,
Double-Throw (SPDT) flow switches used on fluid lines carrying water, ethylene
glycol, or other fluids not classified as hazardous. They can be wired to
energize one device and de-energize another device powered from the same source
when fluid flow either exceeds or drops below the set flow rate.
The F61MG type flow switches are used for low-energy
loads to operate small relays, solenoid valves, and electronic control circuits.
These flow switches have gold-plated contacts for improved electrical
performance in low voltage, low current circuits.
Applications
- use on lines carrying water or ethylene glycol
- not for use with hazardous fluids or in hazardous
atmospheres
Features:
- stainless steel paddle has three segments for use in
pipes from 1 to 3 in. (25mm to 75 mm diameter)
- paddle segments can be removed or trimmed as needed
- F61KB-11 and F61MB-1 include a 6 in. (152 mm) paddle
for pipes 4 to 6 in. (102 mm and 152 mm)
- gold-plated contacts on F61MG-1 reduce intermittent
contact problems in low-voltage and low-current circuits.
Replacement Kits
|
Code Number |
Description |
|
KIT21A-600 |
Stainless Steel 3-piece Paddle (3 in., 2 in. and 1 in.
segments) |
|
KIT21A-601 |
Stainless Steel 6 in. Paddle |
|
PLT52A-600R |
Stainless Steel (3 in., 2 in. and 1 in. segments) and 6
in. Paddle |
|
CVR62A-600R |
Replacement Cover Assembly for F61MB-1, F61MB-5, and
F61MG-1 |
Technical Specifications
|
F61 Series Standard Flow Rate Switch |
|
Maximum Fluid Pressure |
160 psig (1103 kPa) |
|
Fluid Temperature |
Minimum |
F61KB, F61LB: 32°F (0°C) |
|
Maximum |
F61MB, F61MG: -20°F (29°C) |
|
Wiring Connections |
F61KB, F61LB: Screw Type Terminal
F61MB, F61MG: Four Color-Coded No. 14 AWG Solid
Conductor Wire Leads, 7 in. (178 mm) Long |
|
Pipe Connector |
1 in. 11 1/2 NPT Threads |
|
Conduit Connection |
F61KB: One 7/8 in. (22 mm) hole for 1/2 in. conduit with
1 3/32 in. (28 mm) knockout ring for 3/4 in. conduit
F61LB, F61MB, F61MG: Female hub for 1/2 in. conduit
1/2-14 NPSM Threads |
|
Paddle |
Installed stainless steel 3-piece paddle (3 in, 2 in,
and 1 in. segments). Stainless Steel 6 in. paddle supplied w/F61MB and
F61KB. |
|
Switch |
SPDT snap-acting Pennswitch |
|
Enclosure |
Case |
F61KB: 0.062 in. (1.57 mm) Steel;
F61LB, F61MB, F61MG: 0.062 in (1.57 mm) Cold Drawn
Steel |
|
Cover |
F61KB: 0.028 in. (0.7 mm) Steel (NEMA 1)
F61LB: 0.062 (1.57 mm) Cold Drawn Steel (NEMA 1)
F61MB, F61MG: 0.062 (1.57 mm) Cold Drawn Steel
Gasketed (NEMA 3R Rain-tight) |
|
Agency Listings |
UL Listed |
All models: E5368, CCN NMFT |
|
CSA Certified |
F61KB: LR948m Class 3211 06, Class 1222 01
F61LB: Not CSA Certified
F61MB, F61MG: LR948, Class 3211 06 |
|
Shipping Weight |
2.8 lb. (1.3 kg) |
Electrical Ratings
F61KB, F61LB, and F61MB Models
|
Electrical Ratings |
120VAC |
208VAC |
240VAC |
277VAC |
|
Horsepower |
1 |
1 |
1 |
- |
|
Full Load Amperes |
16.0 |
8.8 |
8.0 |
- |
|
Locked Rotor Amperes |
96.0 |
52.8 |
48.0 |
- |
|
Non-Inductive Amperes |
16.0 |
16.0 |
16.0 |
16.0 |
|
Pilot Duty - 125 VA, 24/277VAC |
F61MG Models
|
Electrical Ratings |
120VAC |
|
Full Load Amperes |
1 |
|
Locked Rotor Amperes |
6 |
|
Non-Inductive Amperes |
2 |
|
Pilot Duty - 125 VA at 24/277VAC |
Typical Flow rates for switches with 1 to 3in. paddles
|
GPM (m3/hr)
Required to Actuate Switch |
|
Pipe Size (in.) |
1 |
1-1/41 |
1-1/2 |
2 |
2-1/22 |
3 |
43 |
53 |
63 |
83 |
|
F61KB, F61LB, and F61MB Models, 1 to 3 in. Paddles |
|
Minimum Adjustment |
Flow Increase (R to Y Closes) |
4.2 (0.95) |
5.8 (1.32) |
7.5 (1.70) |
13.7 (3.11) |
18.0 (4.09) |
27.5 (6.24) |
65.0 (14.8) |
125.0 (28.4) |
190.0 (43.2) |
375.0 (85.2) |
|
Flow Decrease (R to B Closes) |
2.5 (0.57) |
3.7 (0.84) |
5.0 (1.14) |
9.5 (2.16) |
12.5 (2.84) |
19.0 (4.32) |
50.0 (11.4) |
101.0 (22.9) |
158.0 (35.9) |
320.0 (72.7) |
|
Maximum Adjustment |
Flow Increase (R to Y Closes) |
8.8 (2.0) |
13.3 (3.02) |
19.2 (4.36) |
29.0 (6.6) |
34.5 (7.84) |
53.0 (12.0) |
128.0 (29.1) |
245.0 (55.6) |
375.0 (85.2) |
760.0 (172.6) |
|
Flow Decrease (R to B Closes) |
8.5 (1.93) |
12.5 (2.84) |
18.0 (4.09) |
27.0 (6.13) |
32.0 (7.27) |
580.0 (11.4) |
122.0 (27.7) |
235.0 (53.4) |
360.0 (81.8) |
730.0 (165.8) |
|
F61MG Models, 1 to 3 in. Paddles |
|
Minimum Adjustment |
Flow Increase (R to Y Closes) |
3.8 (0.9) |
5.3 (1.2) |
6.9 (1.6) |
12.7 (2.88) |
16.7 (3.78) |
24.3 (5.52) |
61.0 (13.8) |
118.0 (26.80) |
183.0 (41.56) |
362.0 (82.22) |
|
Flow Decrease (R to B Closes) |
2.5 (0.6) |
3.7 (0.8) |
5.0 (1.1) |
9.5 (2.2) |
12.5 (2.84) |
19.0 (4.32) |
50.0 (11.4) |
101.0 (22.94) |
158.0 (35.88) |
320.0 (72.68) |
|
Maximum Adjustment |
Flow Increase (R to Y Closes) |
8.7 (2.0) |
13.1 (2.98) |
18.8 (4.27) |
28.9 (6.56) |
33.7 (7.65) |
52.1 (11.8) |
126.0 (28.62) |
243.0 (55.19) |
372.0 (84.49) |
753.0 (171.0) |
|
Flow Decrease (R to B Closes) |
8.5 (1.9) |
12.5 (2.84) |
18.0 (4.09) |
27.0 (6.13) |
32.0 (7.27) |
50.0 (11.4) |
122.0 (27.71) |
235.0 (55.37) |
360.0 (81.76) |
730.0 (165.8) |
1. Flow rates for two inch
paddle trimmed to fit pipe.
2. Flow rates for three inch
paddle trimmed to fit pipe.
3. Flow rates are calculated
for factory-installed set of one, two and three inch pipes
Typical flow rates for Switches with 6 in. paddles
|
GPM (m3/hr)
Required to Actuate Switch |
|
Pipe Size (in.) |
4 |
5 |
6 |
8 |
|
F61KB, F61LB, and F61MB Models, 6 in. Paddles |
|
Minimum Adjustment |
Flow Increase (R to Y Closes) |
37.0 (8.40) |
57.0 (12.9) |
74.0 (16.81) |
205.0 (46.56) |
|
Flow Decrease (R to B Closes) |
27.0 (6.13) |
41.0 (9.31) |
54.0 (12.26) |
170.0 (38.61) |
|
Maximum Adjustment |
Flow Increase (R to Y Closes) |
81.0 (13.4) |
118.0 (26.80) |
144.0 (32.70) |
415.0 (94.26) |
|
Flow Decrease (R to B Closes) |
76.0 (17.3) |
111.0 (25.21) |
135.0 (30.66) |
400.0 (90.85) |
|
F61MG Models, 6 in. Paddles |
|
Minimum Adjustment |
Flow Increase (R to Y Closes) |
35.0 (7.95) |
53.0 (12.0) |
69.0 (15.7) |
197.0 (44.74) |
|
Flow Decrease (R to B Closes) |
27.0 (6.13) |
41.0 (9.31) |
54.0 (12.26) |
170.0 (38.61) |
|
Maximum Adjustment |
Flow Increase (R to Y Closes) |
80.0 (18.2) |
116.0 (26.34) |
142.0 (32.25) |
412.0 (93.58) |
|
Flow Decrease (R to B Closes) |
76.0 (17.3) |
111.0 (25.21) |
135.0 (30.66) |
400.0 (90.85) |
Note: Flow rates for these sizes are
calculated. Where paddle size is larger than pipe size, flow rates are for
6 in. paddle trimmed to fit pipe.
Selection Charts
F61 Series Flow Switch (Standard Flow Rate - SPDT)
|
Code Number |
Enclosure |
Bellows |
Paddle |
|
F61KB-11C |
NEMA 1 |
Phosphor Bronze |
Stainless Steel; 3-piece Paddle (3 in., 2in., and 1 in.
segments) Installed; 6 in. Paddle Supplied Uninstalled |
|
F61LB-1C |
NEMA 1 |
Phosphor Bronze |
Stainless Steel; 3-piece Paddle (3 in., 2in., and 1 in.
segments) Installed |
|
F61MB-1C |
NEMA 3R |
Phosphor Bronze |
Stainless Steel; 3-piece Paddle (3 in., 2in., and 1 in.
segments) Installed; 6 in. Paddle Supplied Uninstalled |
|
F61MB-5 |
NEMA 3R |
Stainless Steel |
Stainless Steel; 3-piece Paddle (3 in., 2in., and 1 in.
segments) Installed; 6 in. Paddle Supplied Uninstalled |
|
F61MG-1C1 |
NEMA 3R |
Phosphor Bronze |
Stainless Steel; 3-piece Paddle (3 in., 2in., and 1 in.
segments) Installed; 6 in. Paddle Supplied Uninstalled |
1. Gold-Plated Contacts
|
