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Mc Donnel & Miller Flow Switches
General Purpose Liquid Flow Switch
- Universal design serves the widest variety of applications
- For starting or stopping electrically operated equipment such as signal lights, alarms, motors, automatic burners, metering devices and others.
- Replacement for common flow switches from Johnson/Penn, Potter/Taco, Watts, Hydrolevel and other manufacturers.
- 1" NPT
- Two electrical knock-outs allow connection from either end.
- Sensitivity adjusting screw makes from adjustment easy.
- Singel pole, double throw snap switch/
- Hardended stainless steel bearings minimize friction.
- Sealed Monel bellows.
- Four stainless steel paddles included: 1", 2", 3" & 6" (25, 50, 80, & 150mm)
- Optional Features
- Time delary (5 or 20 seconds)
- Two SPDT switches to make or break two seperate circuits
- Reinforced paddles
- Materials of construction suitable for corrosive liquids
- Fire sprinkler service - Model FS4-3F only
- BSPT threads
- Minimum temperature (fluid or ambient) 32°F (0°C)
- Maximum temperature 300°F (149°C)
- Maximum pressure 160 psi (11.3 kg/cm2)
| MODE OF OPERATIONS | ||||||
| PIPE SIZE NPT IN. | SETTINGS | FLOW | NO FLOW | MAX.FLOW RATE GPM (LPM) W/O PADDLE DAMAGE | ||
| 1 | Factory or Min | 6 | (22.7) | 3.6 | (13.6) | 27 (102.2) |
| Maximum | 10.2 | (38.6) | 9.2 | (34.8) | ||
| 11/4 | Factory or Min | 9.8 | (37.1) | 5.6 | (21.2) | 47 (177.9) |
| Maximum | 16.8 | (63.6) | 15 | (56.8) | ||
| 11/2 | Factory or Min | 12.7 | (48.1) | 7 | (26.5) | 63 (238.5) |
| Maximum | 23 | (87.1) | 19.5 | (73.8) | ||
| 2 | Factory or Min | 18.8 | (71.2) | 9.4 | (35.6) | 105 (397.4) |
| Maximum | 32.8 | (124.1) | 24 | (90.8) | ||
| 21/2 | Factory or Min | 24.3 | (92) | 11.6 | (43.9) | 149 (564) |
| Maximum | 42.4 | (160.5) | 37.5 | (141.9) | ||
| 3 | Factory or Min | 30 | (113.6) | 12 | (45.4) | 230 (870.6) |
| Maximum | 52.1 | (197.2) | 46.1 | (174.5) | ||
| 4 | Factory or Min | 39.7 | (150.3) | 19.8 | (74.9) | 397 (1502.7) |
| Maximum | 73.5 | (278.2) | 64.2 | (242) | ||
| 5 | Factory or Min | 58.7 | (222.2) | 29.3 | (110.9) | 654 (2415.4) |
| Maximum | 115 | (435.5) | 92 | (348.2) | ||
| 6 | Factory or Min | 79.2 | (300) | 39.6 | (150) | 900 (3406.5) |
| Maximum | 166 | (628.3) | 123 | (465.6) | ||
