Emerson EZH and EZHSO Series Pressure Reducing Regulators Datasheet

Bulletin 71.2:EZH and EZHSOD103081X012April 2014www.fisherregulators.comEZH and EZHSO Series Pressure Reducing Regulators• 1500 psig / 103 bar Inlet

Bulletin 71.2:EZH and EZHSO10Noise Abatement TrimWhisper Trim™ cage provides effective attenuation of aerodynamic noise in gas applications involving 

Bulletin 71.2:EZH and EZHSO11Figure 7. Noise Comparison DiagramFLOW RATE, SCFH / Nm3/h110100908070353,000 / 94006050706,000 / 18,9001,060,000 / 28,400

Bulletin 71.2:EZH and EZHSO12MECHANISM BOXFIRST-STAGERESET PIN (WHITE)SECOND-STAGERESET SHAFTW8128E0565Figure 9. Slam-Shut Device in Open Position Fig

Bulletin 71.2:EZH and EZHSO13E0953PILOTCONTROL LINE BLOCK VALVEHAND VALVE HAND VALVE ALTERNATE CONTROL LINECONTROL LINESLAM-SHUT DEVICEBLOCK VALVEPILO

Bulletin 71.2:EZH and EZHSO14PILOTPILOTCONTROL LINE BLOCK VALVEHAND VALVE HAND VALVE HAND VALVE ALTERNATE CONTROL LINECONTROL LINESLAM-SHUT DEVICEBLOC

Bulletin 71.2:EZH and EZHSO15SPRING RANGESPRING COLORSPRING PART NUMBERMAXIMUM SENSING INLET PRESSUREMANOMETRIC SENSING DEVICE TYPEMANOMETRIC SENSING

Bulletin 71.2:EZH and EZHSO16MAIN VALVEBODY SIZETRIM, % OF CAPACITYLINE SIZE EQUALS BODY SIZE 2:1 LINE SIZE TO BODY SIZE PIPINGNPS DN CgCvC1CgCvC11 25

Bulletin 71.2:EZH and EZHSO17MAIN VALVE BODY SIZETRIM, % OF CAPACITYLINE SIZE EQUALS BODY SIZE 2:1 LINE SIZE TO BODY SIZE PIPINGNPS DN CgCvC1CgCvC11 2

Bulletin 71.2:EZH and EZHSO18Table 13. Types EZH and EZHSO Main Valve with Whisper Trim™ Cage Regulating Flow Coefcients and Sizing CoefcientsMAIN V

Bulletin 71.2:EZH and EZHSO19Table 16. Types EZHOSX and EZHSO-OSX Main Valve with Whisper Trim™ Cage Wide-Open Flow and Sizing CoefcientsMAIN VALVEBO

Bulletin 71.2:EZH and EZHSO2Features •  Long Life in Severe Service Applications—The EZH and EZHSO Series utilize a metal plug design to deect partic

Bulletin 71.2:EZH and EZHSO20Table 17. Capacities for Types EZH and EZHSO with PRX Series Pilot and Type SA/2 Pilot Supply Filter Regulator (continued

Bulletin 71.2:EZH and EZHSO21INLET PRESSURE OUTLET PRESSURECAPACITIES IN THOUSANDS OF SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS USING 1:1 LINE

Bulletin 71.2:EZH and EZHSO22INLET PRESSURE OUTLET PRESSURECAPACITIES IN THOUSANDS OF SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS USING 1:1 LINE

Bulletin 71.2:EZH and EZHSO23Table 19. Capacities for Types EZHOSX and EZHSO-OSX with PRX Series Pilot and Type SA/2 Pilot Supply Filter Regulator (co

Bulletin 71.2:EZH and EZHSO24EG FR (TRIM REMOVAL CLEARANCE)C (INDICATORCOVER REMOVALCLEARANCE)DHJA/2ABODY SIZEAPPROXIMATE SHIPPING WEIGHTSNPT SWE CL15

Bulletin 71.2:EZH and EZHSO25BODY SIZEDIMENSIONS WITH SLAM SHUTD HM(1)NDiaphragm Piston Diaphragm Piston BellowsNPS DN Inch mm Inch mm Inch mm Inch mm

Bulletin 71.2:EZH and EZHSO26Ordering Information Use the Specications section on page 3 and carefully review the description to the right of each sp

Bulletin 71.2:EZH and EZHSO27Ordering Guide (continued) Pre-piped Pilot Supply (Select One)   Yes***   No***Main Valve Replacement Parts Kit (Opti

Bulletin 71.2:EZH and EZHSO©Emerson Process Management Regulator Technologies, Inc., 2003, 2014; All Rights ReservedThe Emerson logo is a trademark an

Bulletin 71.2:EZH and EZHSO3Available Congurations Type EZH (Spring-to-Close): Pilot-operated     pressure reducing regulator for low to high outle

Bulletin 71.2:EZH and EZHSO4Table 1. Main Valve Body Sizes, End Connection Styles and Body RatingsMAIN VALVE BODY SIZEMAIN VALVE BODY MATERIAL END CON

Bulletin 71.2:EZH and EZHSO5Pilot DescriptionsThe EZH and EZHSO Series pressure reducing regulators include a PRX Series pilot mounted on the EZH and 

Bulletin 71.2:EZH and EZHSO6Figure 3. Type EZHSO (Spring-to-Open Version) Operational SchematicTYPE EZHSOTYPE PRX/120TYPE SA/2MVRLSBAPILOT BLEED RESTR

Bulletin 71.2:EZH and EZHSO7Type EZHSO (Figure 3) uses inlet pressure as the operating medium, which is reduced through pilot operation to load the re

Bulletin 71.2:EZH and EZHSO8Wide-Open Monitoring Systems (Figure 4)There are two types of wide-open monitoring systems: upstream and downstream. The d

Bulletin 71.2:EZH and EZHSO9Figure 5. Working Monitoring System Operational SchematicATMOSPHERIC PRESSUREE0876INLET PRESSURELOADING PRESSUREINTERMEDIA