CV1 Check Valve Product Overview The CV1 PTFE Check Valve is designed for use in high purity semiconductor applications and is also ideally suited for ultrapure water and aggressive chemical or gas applications The design utilizes machined PTFE components to provide superior chemical resistance and purity without requiring orings for sealing The machined PTFE spring allows for low cracking pressure operation and minimal back pressure for resealing Features Polished sealing surfaces Tongue and groove external seal Machined PTFE spring Numerous end configurations available including Parflare Available with different configurations on either end Benefits Long life and superior sealing characteristics Eliminates orings and compatibility problems Low cracking pressure Reduces connections mounting space and overall cost Specifications Materials of Construction Wetted: PTFE Nonwetted: PFA PVDF ETFE 52 Cracking Pressure 025 PSIG (017 bar) 075 PSIG (052 bar) Back Check Sealing Pressure 50 PSIG (35 bar) Pressure Range 27” Hg vacuum (913 mbar) 120 PSIG (83 bar) Pressure ranges for operation at ambient temperatures For use at higher temperatures consult Pressure/Temperature chart on page 3 Temperature Ranges Style 1: 32° 212° F (0° 100° C) Ambient 32° 266° F (0° 130° C) Fluid Style 2 & 3: 50° 212° F (10° 100° C) Ambient 50° 266° F (10° 130° C) Fluid Style 4 & 5: 60° 212° F (10° 100° C) Ambient 60° 266° F (10° 130° C) Fluid Parker Hannifin Corporation Partek Operation Tucson AZ

P D V F 1/4" E F AR P AR L 1/4" PARFLARE 115 [2921] F P R A 1" V L A RF A A P P DF L R R " E 2 E 1 / F L RE STYLE 1 PV F 3/4" F A 152 [3861] D D P R 1/2" PARFLARE A 3/4" PARFLARE P V 1" PARFLARE 1" FNPT 78 [1981] BRACKETED DIMENSIONS ARE IN mm Ø123 [3124] 180 [4572] 123 [3124] 3/8" PARFLARE 135 [3429] 146 [3708] 53 STYLE 2 143 [3637] 112 [2845] 3/8" PARGRIP STYLE 3 123 [3124] STYLE 4 216 [5481] STYLE 5 327 [8306] 113 [2870] 75 [1905] 1/4" PARGRIP 1/8" PARGRIP Ø148 [3759] Ø186 [4724] 133 [3376] 1/2" PARGRIP 63 [1600] 1/2" FNPT CV1 Check Valve Pargrip models are supplied with PFA nuts Parflare models are supplied with PVDF nuts For PFA nuts add T to model number Ø275 [6985] Ø325 [8255] 50 [1270] 1/4" FNPT 50 [1270] 3/8" FNPT 38 [965] 1/8" FNPT Model Number CVKV Style Port Configuration CV11122 0 61 8 78 1 1/ 8" FNPT CV11144 1 51 21 74 1 1/ 4" FNPT CV11166 2 43 35 00 2 3/ 8" FNPT CV11188 4 22 60 77 3 1/ 2" FNPT CV1111616 14 00 201 6 5 1" FNPT CV12222 0 02 0 29 1 1/ 8" Pargrip CV12244 0 34 4 90 1 1/ 4" Pargrip CV12266 98 14 11 1 3/ 8" Pargrip CV12288 2 17 31 25 2 1/ 2" Pargrip CV16644 26 3 74 1 1/ 4" Parflare CV16666 1 11 15 84 1 3/ 8" Parflare CV16688 2 03 29 23 2 1/ 2" Parflare CV1661212 4 13 59 47 3 3/ 4" Parflare CV1661616 11 85 170 6 4 1" Parflare Parker Hannifin Corporation Partek Operation Tucson AZ