RV Relief Valve Product Overview The RV Relief Valve is designed for use in high purity semiconductor applications and is also ideally suited for ultrapure water and aggressive chemicals The design utilizes a molded PFA body with precisionmachined PTFE seats and diaphragm poppet When a field set relief pressure is reached the valve opens and permits flow The valve resets when 25% of original setpoint is reached Features One piece precision machined diaphragm poppet manufactured from the latest technology modified PTFE Provides over five times the flexural life as compared to conventional PTFE Tongue and groove seat and diaphragm poppet for positive through flow shut off and diaphragm to body seal Field adjustable relief pressure Benefits High cycle life Lower replacement costs Less downtime Isolates media from adjusting screw Prevent over pressurization in critical applications Specifications Materials of Construction Wetted: PFA Modified PTFE Nonwetted: PVDF SS Brass ABS HDPE 54 Pressure Ranges 15 PSIG (103 bar) 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 Ambient: 0° 150° F (17° 66° C) Fluid: 0° 266° F (17° 130° C) Parker Hannifin Corporation Partek Operation Tucson AZ

120 [3036] 92 [2334] 1/4" PARFLARE 337 [8560] 115 [2921] 40 [1016] 40 40 [1016] [1016] SCREW 55 40 [1016] 123 [3124] 3/8" PARFLARE 1/4" FNPT RV Relief Valve BRACKETED DIMENSIONS ARE IN mm Model Number Cv Kv Flow Configuration Port Configuration Relieving Pressure RangeXX RV144XX 78 11 3 1/ 4" FNPT RV624XX 24 3 5 ON/ OFF 1/ 4" Parflare RV646XX 70 10 2 3/ 8" Parflare Parflare model numbers are supplied with PVDF nuts Also available with PFA (T) nuts 56 [1422] 01 15 to 60 PSIG 02 60 to 120 PSIG Parker Hannifin Corporation Partek Operation Tucson AZ