HIGH PRESSURE SELF-VENTING PRESSURE …

1 CLOSEDB alanced Poppet is springloaded against the seat. Whenfull upstream PRESSURE isapplied, a slightly unbalancedforce is developed whichenhances downstream processdemands flow, the pressureacting on the piston decays,allowing the adjusting springforce to push the piston unseats the poppet,allowing flow to begin andpressure under the piston toincrease until balance isachieved between adjusting spring force and downstreampressure. This condition continues until process demandceases. At this point, increasing PRESSURE overcomes springforce, moving the piston up, allowing the poppet to the downstream pressureshould increase beyondregulation set point, or handleis backed off to decreaseregulated PRESSURE level,downstream PRESSURE will ventthrough the piston and guide tothe vent port. The pressureload from the pistonovercomes the set spring loadand moves the piston upward.

2 The poppet is thereby unseatedto allow venting flow. As PRESSURE decreases under the pistonthe reverse action occurs and the vent seat is closed It WorksHIGH PRESSURESELF-VENTINGPRESSURE REGULATORC ertified to ISO 9001 Features Balanced Poppet Design self -Relieving Captured Vent Low Operating TorqueApplications high PRESSURE Testing Purging & Charging Research Laboratories Chemical/Petroleum Plants Manufacturing ProcessesTechnical DataMaterials of ConstructionBody Brass, 303 or 316 Stainless SteelSeats Kel F or Vespel Seals Buna N, Ethylene Propylene,Neoprene or Viton Port Sizes & Connections1/4 , 1/2 NPT; 1/2 Male Tube; or1/2 British Parallel PipePressure RatingsInlet CRES to 10,000 PSIG (690 BAR)Brass to 6,000 PSIG (414 BAR)Outlet 40 to 10,000 PSIG ( to 690 BAR)LeakageWeightBubble Tight (Air)8 RangeFlow Capacity-40 F to +165 F;Cv = C to +68 CESOD = PR50 SERIESINLET & OUTLET to 10,000 PSIG Fred C.

3 Gilbert Co. 106 Norris RoadBakersfield, Ca. 93308 661-399-9569 fax 661-393-9654PR52 U 1 1 1 2 GBASIC MODEL NUMBERPR50 SeriesMAX. OUTLET PRESSURE *52 - 40 to 400 PSIG (248 BAR)53 - 80 to 800 PSIG (138 BAR)54 - 150 to 1,500 PSIG (50 BAR)55 - 300 to 3,000 PSIG (14 BAR)56 - 450 to 4,500 PSIG (414 BAR)57 - 600 to 6,000 PSIG (414 BAR)58 - 1,000 to 10,000 PSIG (414 BAR)BODY MATERIALB- BrassU- 316 Stainless SteelT- 303 Stainless SteelINLET & OUTLET PORTS1- 1/4 NPT2- 1/2 NPT3- 1/2 Tube (MS55649-8)4- 1/2 British Parallel Pipe Thread(Vent Port 1/4 BPPT, Gauge Port 1/4 BS Taper Thd.)How To OrderOPTIONSG-GaugesN- 316 CRES Panel NutCLEANING LEVELS1- General Oxygen Service2- General Pneumatic Service3- Specify4- Precision Pneumatic ServiceSEAT MATERIAL1- Vespel (Std.)2- Kel F (Limited to 3,000 PSII nlet PRESSURE , 52 thru 55 only)SEAL MATERIAL0- Ethylene Propylene1- Neoprene (Std.)

4 3- Viton (Std. for O2 Service)4- Buna NCD-523-L 11/98 Dimensions & Flow CurvesNotes:*For best regulating characteristics use only within 10% to 90% of maximum outlet PRESSURE liquid or gas is handled equally well by the PR50 Series. No modification is required to convert from gas service to liq-uid. Seals and seats are available for nearly all liquids or gases. The PR50 is not recommended for continuous liquid consult your Circle Seal Controls Distributor, Representative or the factory for information on special connections, op-erating pressures and temperature is a registered trademark of DuPont and Viton is a registered trademark of DuPont Dow SERIESINLET & OUTLET to 10,000 Dia. ( ) ( ).250 ( ).34 ( ) Dia.( )Regulated PRESSURE (PSIG) AirFlow (SCFM) AirAir Flow ChartNote: Inlet PRESSURE Noted on Curves (PSIG)Certified to ISO 9001