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Industrial Flow Switches – From 2 To 15 Feet/second

Original price was: $387.00.Current price is: $95.99.

Rugged Industrial Design
Switch Point Adjustable While Unit Is Operating
15 A SPDT Switch Directly Controls Pump
Mounts in Any Position

Velocity Range

Max Operating Pressure

Max Process Temperature

Process Connection Size

Wetted Materials

Features

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SKU: FSW-41A Categories: Control & Monitoring, Flow Switches, Process Switches Tag: Omega Engineering

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The FSW-40A and FSW-50 Series flow switches feature 15 A SPDT switches and an internal screw adjustment for in-line monitoring of switch points. Multiple drag disks provide incremental switch point adjustment. Their non-magnetic design makes these switches ideal for applications in which rust is a problem. The FSW-40A Series has a brass and stainless steel construction (optional 316 SS), while the FSW-50 Series comes in a plastic/316 SS construction.

The FSW-40A Series is ideal for machine-cutting oils and for sewage applications in which large objects are not caught on the drag disks. Installation “T” fittings are recommended for installing switches for 2′ pipe size and below. For other pipe sizes, a “tee” fitting or weld coupling can be used.

Model No.	Extra Disks Included	For Pipe Sizes	Switch Point Adjustment Range (fps)
Model No.	Extra Disks Included	For Pipe Sizes	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

SPECIFICATIONS
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)

Velocity Range	2.0 to 15 FPS, 3.3 to 11.5 FPS, 2.7 to 10.8 FPS
Max Operating Pressure	300 psi, 100 psi
Max Process Temperature	82 °C (180 °F), 93 °C (200 °F)
Process Connection Size	1", 1 1/4"
Wetted Materials	Brass, 316 SS, Phosphor Bronze, EPDM, Brass, 316 SS, Phosphor Bronze, EPDM, FKM, PTFE, 316 SS, Polyphenylene Sulfide, FKM
Features	For 1¹⁄₂" to 2¹⁄₂" Pipe Sizes, For 1" Pipe Sizes, For 3" to 10" Pipe Sizes, For 10" to 48" Pipe Sizes
Media Type	Liquid
Process Connection Type	NPT male
Switch Rating and Type	15 A SPDT