Large Size - Engineered Plastics Select from these Engineered Plastics for Aggressive or Ultra-Pure Liquids Each of these series offers unique features. Choose from this selection when all-plastic material is desirable and tank space is not restricted. LEVEL SWITCHES - SINGLE POINT LS-74780 - All CPVC LS-1900TFE LS-1700TFE Particularly well suited for rough service. Ideal for use in chemical and plating applications. Resists build-up of foreign material or sticky media. Float travel remains uninhibited in viscous or corrosive liquids. SPDT switch. A medium-size solution for ultra-pure liquid level sensing. Made of corrosion resistant PTFE for low particle generation. Dimensions LS-1900TFE LS-74780 1/4 NPT 1/4 NPT 13/16 (20.6 mm) 5/8 HEX (15.9 mm) 3/4 3-7/16 (19.1 mm) (87.3 mm) 1-13/16 (46.0 mm) 2-25/32 (70.6 mm) WIRE. 22 AWG. TEFLON JACKETED 24 TO 26 (610 mm to 660 mm) EXTENDED LENGTH TEFLON(R) JACKETED LEAD WIRES PVC JACKETED LEAD WIRES 21/32 (16.7 mm) LS-1700TFE 21/32 HEX (16.7 mm) .92 (22.3 mm) 2-1/2 REF. (63.5 mm) 3-15/32 (88.1 mm) 1-15/16 (49.2 mm) 2-21/32 (67.5 mm) 1-1/2 DIA. (38.1 mm) 1/8 NPT REF. 5/8 REF. (15.9 mm) ACTUATION LEVEL #174105. FLOAT 1-31/32 REF. (50.0 mm) 1-1/8 DIA. REF. (28.5 mm) 2-1/8 DIA. (54 mm) 1/2 HEX. REF. (12.7 mm) #174106. RETAINING CLIP 5/16 DIA. REF. (7.9 mm) L1=Switch actuation level, nominal (based on a liquid specific gravity of 1.0 and N.O. dry circuit-dimension will vary for N.C. circuit). Common Specifications Electrical Termination: No. 18 AWG, 24 L., Lead Wires (Jacket material is indicated on dimensional drawings, above). How To Order - Select Part Number based on specifications required. Series Number Materials Stem, Mounting and Other Wetted Float Min. Liquid Sp. Gr. Operating Temperature Pressure, PSI, Max. LS-74780 LS-1900TFE CPVC Teflon(R) .85 .80 -40F to +180F (-40C to +82.2C) -40F to +300F (-40C to +148.9C) 15 30 LS-1700TFE PTFE .86 +32F to +212F (0C to +100C) 25 * See "Electrical Data" on Page X-5 for more information. ** Switch operation is selectable, N.O. or N.C., by inverting the float on the unit stem. Units are shipped N.O. unless otherwise specified. 100 VA switches are not U.L. Recognized. - Stock Items. A-12 Visit www.GemsSensors.com for most current information. Switch* SPST, 20 VA SPDT, 20 VA SPST, 20 VA, N.O. SPST, 20 VA, N.C. Part Number Mounting Size 1/4 NPT 1/8 NPT 74780** -- 133299 -- -- 174100 -- 174200