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EZR Pressure Reducing Regulator

EZR Pressure Reducing Regulator
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EZR Series Pressure Reducing Regulator Robust Quiet Operation Thoroughly Tested Exceptional Design Internally Actuated TYPE EZROSx WITH INTEGRAL SLAM-SHUT DEVICE Figure 1. EZR Series Pressure Reducing Regulator

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TRIM PACKAGE TYPE 161EB PILOT MAINTENANCE TYPE EZR PRESSURE REDUCING REGULATOR Figure 2. EZR Series Features and Benefits Introduction The Type EZR pilot-operated, pressure reducing regulator is designed for natural gas transmission/distribution systems and industrial/commercial applications. The Type EZR provides smooth, quiet operation, tight shutoff and long life, even in dirty service. Its internally actuated metal plug eliminates disadvantages associated with boot-style regulators, and the specially engineered flow path deflects debris, protecting the seat from damage and erosion. The...

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Bulletin 71.2:EZR Features and Benefits 1 Tight Shutoff—The EZR Series uses a diaphragm and metal plug, eliminating the disadvantages of boot-style regulators. When open, the metal plug deflects particles and debris away from the diaphragm. The result is enhanced resistance to particle erosion, which provides excellent shutoff over an extended life. When closed, loading pressure and the main spring push the diaphragm onto the taperededged seat on the cage. 2 Debris Protection—The specially engineered flow path, along with the metal plug, allows flow through the regulator without seat...

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Bulletin 71.2:EZR 10 In-Service Travel Indicator—The optional travel indicator Type PRX/120-AP—Outlet pressure range of 435 to 1000 psig / 30.0 to 69.0 bar. The Type PRX/120-AP can be used as the pilot on single stage pressure reducing regulators, as the monitor pilot or as the working pilot in wide-open monitor systems, or as the working pilot for monitoring and working regulators in the working monitoring systems. 11 Versatility—The EZR Series uses the E-body, making Type PRX/125 (Monitor Pilot Only)—Identical to the Type PRX/120 except the restriction screw is removed. The Type PRX/125...

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Bulletin 71.2:EZR Specifications Available Configurations Type EZR: Pilot-operated pressure reducing regulator for low to high outlet pressure Type EZROSX: Type EZR with a Type OS2 slam-shut device for overpressure (OPSO) or overpressure and underpressure (OPSO/UPSO) protection Main Valve Body Sizes, End Connection Styles and Structural Design Ratings(1)(2) See Table 1 Maximum Inlet Pressures and Pressure Drops(1) Main Valve: See Table 8 Pilots: See Table 3 Restrictor: 1500 psig / 103 bar Outlet (Control) Pressure Ranges See Table 2 Main Valve Plug Travel NPS 1, 1-1/4 x 1, 2 x 1 / DN 25, 32...

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Bulletin 71.2:EZR Specifications (continued) PRX Series Pilots Body: Steel, ASTM 105 Trim: Stainless steel Elastomers: Nitrile (NBR) or Fluorocarbon (FKM) Disk Material: Polyurethane (PU) or Fluorocarbon (FKM) Mounting Parts Pilot Mounting Pipe Nipple: Plated steel Tubing and Fittings: Stainless steel Type 112 Restrictor Body: CF8M Stainless steel Groove Valve: 416 Stainless steel Retainer: 416 Stainless steel Pipe Plug: 316 Stainless steel O-rings: Fluorocarbon (FKM) Type 252 Pilot Supply Filter Body: Aluminum or Stainless steel Filter Cartridge: Polyethylene O-rings: Nitrile (NBR) Drain...

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Bulletin 71.2:EZR Table 3. Pilot Pressure Ratings Maximum Inlet Pressure Maximum Emergency Outlet Pressure or Maximum Emergency Sense Pressure(1) Maximum Bleed (exhaust) pressure for monitor pilots Maximum Outlet Pressure Maximum Sense (control) pressure for monitor pilots 1. Maximum pressure to prevent the casings from bursting during abnormal operation (leaking to atmosphere and internal parts damage might occur). Table 4. Main Valve Minimum Differential Pressures(1) MAIN VALVE BODY SIZE NPS MAIN SPRING PART NUMBER AND COLOR 19B2400X012, Light Blue GE12727X012, Black 19B2401X012, Black...

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flow direction TYPE 252 PILOT SUPPLY FILTER MAIN SPRING DIAPHRAGM AND PLUG ASSEMBLY 3a—Type EZR with Types 161EB Pilot, 112 Restrictor and 252 Filter W7438 inlet pressure outlet pressure atmospheric pressure loading pressure Figure 3. Type EZR Operational Schematic

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Bulletin 71.2:EZR prx series pilot type 252 pilot supply filter main spring diaphragm and plug assembly flow direction S - Supply port B - Bleed port L - Loading port A - Sensing port 3b—Type EZR with Prx Series pilot and Type 252 Filter Schematic inlet pressure outlet pressure atmospheric pressure loading pressure Figure 3. Type EZR Operational Schematic (continued) As the outlet pressure rises toward the outlet pressure setting, it compresses the pilot diaphragm against the pilot control spring and lets the pilot valve plug or disk close. Loading pressure begins building on the Type EZR...

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Bulletin 71.2:EZR elastomer/fabric material code thickness year of manufacture code radial location to locate imprint code Table 6. Diaphragm Imprint Codes Thickness DIAPHRAGM MATERIALS 17E88 - Fluorocarbon (FKM) (high aromatic hydrocarbon content resistance) 17E97 - Nitrile (NBR) (high-pressure and/or erosion resistance) locate ink code between radii dome identification thickness ink code (use one location only) manufacturer code Figure 4. Diaphragm Markings In normal operation of a wide-open configuration, the working regulator controls the system’s outlet pressure. With a higher outlet...

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restrictor restrictor type 252 pilot supply filter type 252 pilot supply filter Type EZR-161 upstream or downstream wide-open monitor Type EZR-PRX UPSTREAM OR DOWNSTREAM WIDE-OPEN MONITOR inlet pressure outlet pressure atmosheric pressure S - Supply port B - Bleed port L - Loading port A - Sensing port loading pressure intermediate pressure Figure 5. Type EZR Upstream or Downstream Wide-Open Monitor

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Bulletin 71.2:EZR type prx/125 MONITOR pilot (no restrictor screw) type prx/120 WORKING pilot S inlet pressure outlet pressure atmosheric pressure S - Supply port B - Bleed port L - Loading port A - Sensing port loading pressure intermediate pressure Figure 6. Type EZR-PRX-PRX Working Monitor Schematic Capacity Information Note Flow capacities are laboratory verified; therefore, regulators may be sized for 100% flow published capacities. It is not necessary to reduce published capacities. Tables 13,14 and 15 show the natural gas regulating capacities of the EZR Series regulator at selected...

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