BR3 Back Pressure Regulator Product Overview The 1/2” and 1” PTFE Back Pressure Regulators are designed for use in high purity semiconductor applications and are also ideally suited for use in ultrapure water and aggressive chemicals The design utilizes a machined PTFE body with precision machined seat and diaphragm sealing area The larger diaphragm allows for quicker reaction time to changes upstream preventing pressure surges from affecting and changing upstream processes Features One piece precision machined diaphragm 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 PTFE Modified PTFE Non Wetted Surfaces Anodized Aluminum 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 Ideal for DI water systems Low Hysteresis Seal provides protection of springs and adjusting screw 10 Parker Hannifin Corporation Partek Operation Tucson AZ

B C (MAX) A STYLE 1 1/2" FNPT PLUGGED 1/4" FNPT GAUGE PORT STYLE 1 1/2" PARFLARE 220 [5575] 11 BR3 Back Pressure Regulator PLUGGED 1/4" FNPT GAUGE PORT BRACKETED DIMENSIONS ARE IN mm Model Number Style Trim Material Port Configuration Secondary PressureX A B C PLUGGED 1/4" FNPT GAUGE PORT BR31118X 1 Anodized Aluminum 1/ 2" FNPT Ø 3 50 [ 88 90] 75 [ 19 05] 6 52 [ 165 61] BR31168X BR311116X BR33118X 1 2 1 Anodized Aluminum Anodized Aluminum PVDF 1/ 2" Parflare 1" FNPT 1/ 2" FNPT 1 = 030 PSIG 2 = 060 PSIG Ø 3 50 [ 88 90] Ø 5 00 [ 127 00] Ø 3 50 [ 88 90] 75 [ 19 05] 1 25 [ 31 75] 75 [ 19 05] 6 65 [ 168 91] 8 15 [ 207 01] 6 52 [ 165 61] BR33168X 1 PVDF 1/ 2" Parflare Ø 3 50 [ 88 90] 75 [ 19 05] 6 65 [ 168 91] C (MAX) B A STYLE 2 1" FNPT Parker Hannifin Corporation Partek Operation Tucson AZ