PR3 Pressure Regulator Product Overview The 1/2” and 1” PTFE Pressure Regulators are designed for use in high purity semiconductor applications and are also ideally suited for ultrapure water and aggressive chemicals The design utilizes a machined PTFE body with precision machined seat and diaphragm sealing area The large diaphragm allows for quicker reaction time to changes upstream preventing the effects of pressure surges to be transferred downstream Features One piece precision machined diaphragms manufactured from the latest technology modified PTFE Provides over five times the flexural life as compared to conventional PTFE Nonrelieving design requires a 10 psi differential across the valve Tongue and groove diaphragm Specifications Materials of Construction: Wetted Surfaces PFA Modified PTFE Non Wetted Surfaces ABS Brass SS PVDF SS Spring Chrome Vanadium Die Spring HDPE Pressure Ranges: Max Primary Pressure 120 PSIG (83 bar) Secondary Pressure Options 0 to 30 PSIG and 0 to 60 PSIG Pressure ranges above are for operation at ambient temperature For use at higher temperatures consult Pressure/Temperature chart on page 3 Temperature Ranges: 0°F 150°F (17°C 66° C) Ambient 0°F 266°F (17°C 130° C) Fluid Benefits High cycle life Lower replacement costs Less downtime Stabilizes system pressure Ideal for use in DI water systems Low hysteresis Seal provides protection of springs and adjusting screw 6 Parker Hannifin Corporation Partek Operation Tucson AZ

C (MAX) B 7 PR3 Pressure Regulator Model Number Style Trim Material Port Configuration Secondary PressureX A B C PR31118X 1 Anodized Aluminum 1/ 2" FNPT A PLUGGED 1/4" FNPT GAUGE PORT C (MAX) STYLE 1 STYLE 2 BRACKETED DIMENSIONS ARE IN mm Ø 3 25 [ 82 55] 1 60 [ 40 64] 6 52 [ 165 61] PR31168X 2 Anodized Aluminum 1/ 2" Parflare Ø 4 35 [ 110 49] 1 81 [ 45 97] 6 63 [ 168 40] PR311116X 1 Anodized Aluminum 1" FNPT 1 = 030 PSIG 2 = 060 PSIG Ø 4 50 [ 114 30] 2 45 [ 62 23] 7 92 [ 201 17] PR33118X 1 PVDF 1/ 2" FNPT Ø 3 25 [ 82 55] 1 60 [ 40 64] 6 52 [ 165 61] PR33168X 2 PVDF 1/ 2" Parflare Ø 4 35 [ 110 49] 1 81 [ 45 97] 6 63 [ 168 40] B A PLUGGED 1/4" FNPT GAUGE PORT Parker Hannifin Corporation Partek Operation Tucson AZ