Piston flow switch FS8000-35003

for liquidsbrassstainless steel

Overview
The FS8000-35003 brass NPT flow switch provides precise 0.25 GPM (0.95 L/min) flow monitoring in a compact industrial package. It features a clog-resistant Ryton® R4 piston, brass housing and a 316 stainless-steel float. Rated to 275 °F (135 °C) and 103 BAR (1500 PSI), it supports multiple AC/DC electrical ratings and is suited for HVAC loops, cooling circuits and OEM fluid systems. CE and cULus approvals and a 100‑μm internal filter ensure reliable operation in commercial and industrial environments.

Features

• Clog-resistant one-piece Ryton® R4 piston for stable detection
• Brass housing with 316 stainless-steel float for corrosion resistance
• Compact detection at 0.25 GPM (0.95 L/min), 1/2 NPT mounting

Specifications
Housing Material: Brass
Mounting Type & Size: 1/2 NPT
Flow Setting (GPM): 0.25
Flow Setting (LPM): 0.95
Set Point Accuracy: +/- 10%
Spring Material: 302 Stainless Steel
Piston Material: Ryton R4
Switch Logic: Normally Open
Switch Rating: 20 WATT SPST
Electrical Ratings: 120 VAC, 0.12A; 100 VDC, 0.10A; 24 VDC, 0.30A; 12 VDC, 0.30A
Temperature (Max-Celsius): 135
Temperature (Max-Fahrenheit): 275
Maximum Pressure (BAR): 103
Maximum Pressure (PSI): 1500
Electrical Termination: 24 in, 22 AWG, Teflon insulated
Approvals: CE, cULus E54633
Lead Time: 15 Business Days
Warranty: 1 Year

Technical data / specifications

• Model / Series: FS8000
• SKU: FS8000-35003
• Housing Material: Brass
• Float: 316 Stainless Steel
• Piston: Ryton R4 (clog-resistant)
• Flow Setting: 0.25 GPM (0.95 LPM)
• Set Point Accuracy: +/- 10%
• Switch Type: Normally Open, 20 WATT SPST
• Electrical Ratings: 120 VAC (0.12A); 100 VDC (0.10A); 24 VDC (0.30A); 12 VDC (0.30A)
• Max Temperature: 135 °C / 275 °F
• Max Pressure: 103 BAR / 1500 PSI
• Electrical Termination: 24 in, 22 AWG, Teflon insulated
• Filter Rating: 100 μm
• Approvals: CE, cULus E54633
• Lead Time: 15 Business Days
• Warranty: 1 Year