BR1 Back Pressure Regulator Product Overview The 1/4” PTFE Back 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 PFA body with precision machined seats 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 Benefits High cycle life Lower replacement costs Less downtime Stabilizes system pressure Ideal for use in DI water systems Low hysteresis Seal provides protection for springs and adjusting screw Specifications Materials of Construction: 8 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 Parker Hannifin Corporation Partek Operation Tucson AZ

9 BR1 Back Pressure Regulator BRACKETED DIMENSIONS ARE IN mm Model Number Trim Material Port Configuration Secondary PressureX BR12214X 1/4" PARFLARE 561 MAX [14220] Ø150 [3810] 115 [2921] PANEL NUT 50 MAX [1270] PANEL HOLE TO CLEAR 1 3/8”14 123 [3124] 1/ 4" FNPT BR12264X HDPE 1/ 4" Parflare BR12266X 3/ 8" Parflare IN OUT 125 [3178] 3/8" PARFLARE 1/4" FNPT 56 [1422] 1 = 0 to 30 PSIG 2 = 0 to 60 PSIG Parker Hannifin Corporation Partek Operation Tucson AZ