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Type 63EG Relief Valve or Backpressure Regulator

Type 63EG Relief Valve or Backpressure Regulator
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Type 63EG Relief Valve or Backpressure Regulator - 1

Type 63EG Relief Valve or Backpressure Regulator • Noise Reduction Capability—The Whisper Trim™ cage can reduce noise from high-velocity gas by as much as 10 decibels. Whisper Trim equipped regulators are especially engineered for highpressure applications where sonic gas velocities are often encountered at relief valve outlets. • Easy In-Line Maintenance—Top entry design reduces maintenance time. Trim parts can be inspected, cleaned and replaced without removing the body from the pipeline. If actuator is used, its stem need not be disconnected. • Stable Startup—The unique hollow valve stem in the pilot provides quick pressure registration on top of the main valve plug preventing main valve unseating during normal system startup. • Fast Pilot Reseat—The fixed restriction in the Types 6358B, 6358EB and 6358EBH pilots allows the valve plug to quickly reseat after operation. • Low Buildup—6358 Series relief valve pilots reduce the buildup required for main valve to go wide-open, as shown in t

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Type 63EG Relief Valve or Backpressure Regulator - 2

PILOT CONTROL SPRING MAIN VALVE PLUG PILOT DIAPHRAGM PILOT VALVE PLUG MAIN SPRING PILOT EXHAUST INLET PRESSURE OUTLET PRESSURE/EXHAUST ATMOSPHERIC PRESSURE LOADING PRESSURE Figure 3. Type 63EG Backpressure Regulator Operational Schematic • Full Usable Capacity—Fisher™ relief valves and backpressure regulators are laboratory tested. One hundred percent of the published capacities can be used with confidence. upstream registration, the pilot supply tubing may be disconnected at the 1/4 NPT main valve body tapping and this tapping plugged. • In-Service Travel Inspection—The travel indicator...

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Type 63EG Relief Valve or Backpressure Regulator - 3

Type 63EG MAIN VALVE SPRING VALVE STEM PILOT EXHAUST PILOT CONTROL SPRING PILOT VALVE PLUG ACTUATOR DIAPHRAGM M1156_01/2009 INLET PRESSURE OUTLET PRESSURE ATMOSPHERIC PRESSURE LOADING PRESSURE Figure 4. Type 1098-63EGR Relief Valve Operational Schematic Types 63EG and 1098-63EGR pilot-operated relief valves or backpressure regulators are suitable for both liquid and gas service and may also be used for throttling backpressure applications, such as on oilfield separators. These relief valves are combined with the 6358 Series pilots to result in the configurations shown in the Specifications...

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Type 63EG Relief Valve or Backpressure Regulator - 4

Type 63EG Specifications This section lists the specifications for Type 63EG relief valves or backpressure regulators. Factory specification is stamped on the nameplate fastened on the regulator at the factory. Available Constructions Type 63EG with a 6358 Series Pilot Type 1098-63EGR with a Type 6358B Pilot Main Valve Flow Characteristic Linear (standard), Quick Open (optional) or Whisper Trim™ III (optional) Main Valve Body and End Connection Styles(1)(2) Main Valve Flow Direction Up through seat ring and out through cage Dimensions and Pilot Connections See Figure 7 Process Temperature...

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Type 63EG Relief Valve or Backpressure Regulator - 5

Type 63EG Specifications (continued) Construction Materials Type 1098 Actuator Bonnet: Steel or Stainless steel Diaphragm Case: Steel or 304 Stainless steel Diaphragm Plate: Cast iron or Stainless steel Diaphragm and O-rings: Nitrile (NBR) (standard), Fluorocarbon (FKM), Ethylenepropylene (EPDM) or Perfluoroelastomer (FFKM) Stem: 17-4 PH Stainless steel (standard) or 316 Stainless steel Type 63EG Main Valve Body and Body Flange: WCC steel, Cast iron or CF8M Stainless steel Cage: Stainless steel (standard linear), 416 or 316 Stainless steel (Whisper Trim™ III) Seat Ring and Valve Plug:...

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Type 63EG Relief Valve or Backpressure Regulator - 6

Type 63EG Table 2b. Flow Coefficients at Maximum Rated Travels, 2:1 Line Size to Body Size BODY SIZE PIPING STYLE Linear Cage Whisper Trim III Cage As the inlet pressure drops below the set pressure, the pilot control spring closes the pilot valve plug and the exhaust to atmosphere stops. Force from the main spring, along with pilot loading pressure, pushes the main valve plug onto the seat, producing tight shutoff. Backpressure Regulator As long as inlet pressure remains below set pressure, the Type 6358 pilot control spring keeps the pilot valve plug closed. Inlet pressure bleeds around...

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Type 63EG Relief Valve or Backpressure Regulator - 7

Type 63EG HOLLOW PASSAGE IN VALVE PLUG STEM DIAPHRAGM ASSEMBLY UPPER PORTION OF VALVE PLUG FIXED RESTRICTION HOLLOW PASSAGE IN VALVE PLUG STEM DIAPHRAGM ASSEMBLY UPPER PORTION OF VALVE PLUG RESTRICTION PLUG TO MAIN VALVE DIAPHRAGM TO MAIN VALVE DIAPHRAGM LOWER PORTION OF VALVE PLUG LOWER PORTION OF VALVE PLUG EXPANDED VIEW OF THE TYPE 6358B RELIEF PILOT DIAPHRAGM ASSEMBLY AND VALVE PLUG EXPANDED VIEW OF THE TYPE 6358 BACKPRESSURE PILOT DIAPHRAGM ASSEMBLY AND VALVE PLUG A2787_4_11/2008 INLET PRESSURE INLET PRESSURE OUTLET (EXHAUST) PRESSURE OUTLET (EXHAUST) PRESSURE ATMOSPHERIC PRESSURE...

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Type 63EG Relief Valve or Backpressure Regulator - 8

Type 63EG Table 4. Minimum and Maximum Differential Pressures TYPE 63EG WITH TYPE 1098 SIZE 40 ACTUATOR TYPE 63EG BODY SIZE MAIN VALVE SPRING RANGE MAIN VALVE MAIN VALVE SPRING PART SPRING NUMBER COLOR Minimum Differential Pressure Required For Full Stroke Minimum Differential Pressure Required For Full Stroke Maximum Differential Pressure Capacity Information Note Buildup must be at least the minimum buildup required to fully open the valve. Gases Tables 5 and 6 give relief capacities at selected set pressures for the Types 63EG and 1098-63EGR respectively. Flows are in SCFH (at 60°F and...

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Type 63EG Relief Valve or Backpressure Regulator - 9

Type 63EG Table 5. Type 63EG Relief Capacities(1) to Atmosphere with Types 6358, 6358B, 6358EB and 6358EBH Pilots MAIN VALVE SIZE PILOT TYPE MAIN VALVE SPRING COLOR PILOT SPRING RANGE, PART NUMBER AND COLOR, psig / bar BUILDUP CAPACITIES(1) OF OVER SET BUILDUP OVER PRESSURE 0.6 SPECIFIC PRESSURE SET PRESSURE DROP BELOW GRAVITY NATURAL NEEDED TO SET PRESSURE NEEDED GAS WITH 2:1 TO BEGIN FULLY OPEN NEEDED TO LINE SIZE TO OPENING MAIN MAIN VALVE(4) RESEAT PILOT BODY SIZE PIPING (3) VALVE 1. Capacities based on set pressure plus buildup to achieve full opening using a standard linear cage and...

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Type 63EG Relief Valve or Backpressure Regulator - 10

Type 63EG Table 5. Type 63EG Relief Capacities(1) to Atmosphere with Types 6358, 6358B, 6358EB and 6358EBH Pilots (continued) MAIN VALVE SIZE PILOT TYPE MAIN VALVE SPRING COLOR BUILDUP BUILDUP OVER OVER SET PILOT SPRING SET PRESSURE SET PRESSURE RANGE, PART NEEDED TO (2) NEEDED TO NUMBER AND PRESSURE BEGIN OPENING FULLY OPEN COLOR, MAIN VALVE(3) MAIN VALVE(4) psig / bar CAPACITIES(1) OF PRESSURE 0.6 SPECIFIC DROP BELOW GRAVITY NATURAL SET PRESSURE GAS WITH 2:1 NEEDED TO LINE SIZE TO RESEAT PILOT BODY SIZE PIPING 1. Capacities based on set pressure plus buildup to achieve full opening using...

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