Applications
- Rugged Industrial Design
- Switch Point Adjustable While Unit Is Operating
- 15 A SPDT Switch Directly Controls Pump
- Mounts in Any Position
Specification
Relay Switch: SPDT 15 A @ 125 or 250 Vac; 10,000,000 operations median
Nominal Sensitivity (% Flow Change to Activate Switch):
10% @ upper end of range
30% @ lower end of range
Pressure Drop: 1 to 3′ pipe, less than 1 psi; 4′ and above, negligible
Installation Fitting:
FSW-40A Series: 1 NPT
FSW-50 Series: 1¼ NPT
Max Pressure/Temperature:
FSW-40A Series: 300 psig @ 82°C (180°F)
FSW-50 Series: 100 psig @ 93°C (200°F)
Min Temperature: 4°C (40°F)Wetted Parts:
FSW-40 Series: Brass, 300 to 304 SS, phosphor bronze and EPDM and cork rubber (other materials are brass body, Noryl® cover, 300 SS and plastic hardware); also available with 316 SS, FKM, and PTFE
FSW-50 Series: Polyphenylene sulfide, 316 SS, FKM; also available with polyphenylene sulfide, Hastelloy C and FKM construction
Electrical Cable Fitting: Water resistant for cable diameters 0.250 ±0.025′
Weight:
FSW-40A Series: 1.59 kg (3.5 lb)
FSW-50 Series: 113 g (4.0 oz)
| Model No. | Extra Disks Included |
For Pipe Sizes |
Switch Point Adjustment Range (fps) | |
| Low | High | |||
| FSW-40A | 1 | 1′ | 2.0 to 6.0 | 5.0 to 15.0 |
| FSW-41A | 2 | 1½ to 2½’ | 2.0 to 6.0 | 5.0 to 15.0 |
| FSW-42A | 3 | 3 to 10′ | 2.0 to 6.0 | 5.0 to 15.0 |
| FSW-43A | 3 | 10 to 48′ | 2.0 to 6.0 | 5.0 to 15.0 |
| FSW-50 | 1 | 1′ | 3.3 to 5.3 | 7.4 to 11.5 |
| FSW-51 | 1 | 1½ to 2½’ | 2.7 to 5.4 | 5.4 to 10.8 |
| FSW-52 | 1 | 3 to 10′ | 2.0 to 4.0 | 4.0 to 8.0 |
