FS-4 Series - Low Cost, Molded Plastic Construction Flow Rate Settings: 0.1 GPM to 1.5 GPM Port Size: 9/16-18 UNF Primary Construction Material: Ryton(R) Setting Type: Fixed The FS-4 Series makes flow protection economical for a broad range of industrial applications such as welders, lubrication systems, medical sterilizers and laundry chemicals dispensing. U.L. Recognized -- File No. E31926 CSA Listed -- File No. LR30200 Specifications Wetted Materials Housing and Piston Ryton(R) R4 Spring 316 Stainless Steel O-Ring Viton(R) Other Wetted Parts Dimensions Epoxy 1.90 48 Operating Pressure, Maximum 250 PSIG (17.2 bar) @ 70F (21C) Operating Temperature 0F to 225F (-17C to +107C) Set Point Accuracy 15% Maximum Set Point Differential 20% Maximum Switch* SPST or SPDT, 20 VA (SPDT: 240 VAC Max.) Inlet/Outlet Ports 9/16 -18 UNF-2B Thread Recommended Filtration Electrical Termination SPST 50 Microns or Better .920 DIA 23 .586 15 1.00 25 LEADWIRES 18 AWG, Zipcord, 24 Long SPDT 3.80 97 18 AWG, PVC 24 Long Leads 3.640 92 1.255 32 How To Order - Standard Models Housing and Piston Material Ryton (R) Flow Setting GPM Part Numbers SPST Switch N.O., No Flow N.C., No Flow With SPDT Switch 0.1 122340 122346 122352 0.25 122341 122347 122353 0.5 122342 122348 122354 0.75 122343 122349 122355 1.0 122344 122350 122356 1.5 122345 122351 122357 Note: Flow settings are calibrated using water @ +70F on increasing flow, with units in a vertical position (lead wires up). inch mm 9/16 -18 UNF-2B THREAD WITH O RING SEAL PORT Pressure Drop - Typical 3.0 PRESSURE DROP (PSID) FLOW SWITCHES * See "Electrical Data" on Page X-5 for more information. 2.5 Part No. 122355 2.0 Part No. 122357 1.5 Part No. 122352 1.0 0.5 0 0 0.5 1.0 1.5 2.0 FLOW RATE - GPM Tests conducted with units in vertical position (lead wires up) with water at +70 F (21 C). Port Adapters for FS-4 Converts 9/16 threaded ports to NPT or barbed connection. Made of Ryton(R)-R4 or polypropylene with O-Rings in place. CAUTION: Do not exceed 15 in./lbs. maximum torque when installing adapter fittings. Material Ryton(R) Polypropylene G-4 Adapter Size Part Numbers 1/8 NPT* 123028 1/4 NPT* 123029 1/4 NPT* 158602 1/2 Barb** 158603 *Wrench flats provide for proper assembly. **Accepts 1/2 I.D. flexible hose - Stock Items. 1/2" (12.7 mm) .54" (13.7 mm) DIA. DIA. 3/4" (19.0 mm) HEX .25" (6.3 mm) 1/2" Barb 1" (25.4 mm) 1/4" NPT 1/8" NPT 3/4" (19.0 mm) DIA. .62 FLAT 3/8" (9.5 mm) 1/2" (12.7 mm) Visit www.GemsSensors.com for most current information. 1" (25.4 mm) DIA. .87 FLAT 1/2" (12.7 mm) 5/8" (15.9 mm)