Emerson EZH Instruction Manual Download Page 23

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TyPE PrX/182 PiLOT aSSEMBLy

SECTiOn a - a

Figure 7.

Type PRX/182 Pilot Assemblies

Type EZH Relief

Summary of Contents for EZH

Page 1: ...tion Scope of the Manual This manual provides installation startup and maintenance instructions and parts ordering information for theType EZH relief valve or backpressure regulator and PRX Series pilots Information on other equipment used with this product is found in separate manuals Product Description Type EZH relief valve or backpressure regulator is pilot operated and designed for use in hig...

Page 2: ...orocarbon FKM Version 0 to 180ºF 18 to 82ºC 2 Polyurethane PU Version NPS 1 2 6 8 12 x 6 DN 25 50 150 200 300 x 150 Sizes 22 to 180ºF 30 to 82ºC NPS 3 to 4 DN 80 to 100 Sizes 4 to 180ºF 20 to 82ºC Option Travel Indicator 1 The pressure temperature limits in this Instructional Manual and any applicable standard or code limitation should not be exceeded 2 Type PRX Fluorocarbon FKM elastomer is limit...

Page 3: ... The inlet pressure unbalance overcomes the main spring force and opens the diaphragm and plug assembly 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 diaphragm and plug assembly onto the knife edged seat producing tight shutoff Instal...

Page 4: ...o damage to or debris in the main valve body or pilot Also make sure that all tubing and piping are clean and unobstructed Caution When installing Type EZH trim in an existing Fisher E body damage can result if flow is not in the correct direction Look at the body web to confirm that flow is in the correct direction up through the center of the cage and down through the cage slots Change the exist...

Page 5: ...he care Emerson takes in meeting all manufacturing requirements heat treating dimensional tolerances etc use only replacement parts manufactured or furnished by Emerson Also when lubrication is required use a good quality lubricant and sparingly coat the recommended parts The frequency of inspection and replacement depends upon the severity of service conditions and upon applicable codes governmen...

Page 6: ... 31 with the disk holder assembly key 30 into sleeve adaptor key 27 and align screw holes Table 3 Torque Specifications and Tool Recommendations Part name BODY SIZE NPS 1 DN 25 NPS 2 DN 50 NPS 3 DN 80 NPS 4 DN 100 NPS 6 8 and 12 x 16 DN 150 200 and 300 x 150 Hex Head Cap Screw key 6 Tool Size 13 16 in or 21 mm 3 4 in or 19 mm 15 16 in or 24 mm 1 1 8 in or 29 mm 19 mm Allen Torque Ft lbs 50 to 60 5...

Page 7: ...e a mark on the upper actuator casing key 11 lower actuator casing key 5 intermediate flange key 25 and body key 1 to indicate proper alignment when reassembling the product 2 Remove travel indicator assembly keys 138 139 140 141 142B 143 144 145 160 and 192 if present by loosening the travel indicator fitting key 141 and lifting out the travel indicator assembly 3 Loosen out the hex nuts key 23 a...

Page 8: ... to remove cap key 70 from the upper actuator casing key 5 Attach an eyebolt to the upper spring seat key 73 and lift up and remove the sleeve assembly key 14 Lift off the diaphragm plates assembly Remove O ring key 15 and replace it as needed Inspect diaphragm key 20 for damage or wear remove screws key 16 lift off inlet plate key 18 to replace diaphragm key 20 and O ring key 17 4 Align screw hol...

Page 9: ...vel indicator stem key 139 3 Remove indicator fitting key 141 and inspect O ring key 143 Remove O ring key 142B and back up rings key 160 Replace and lubricate O ring if damaged Pull up on the travel indicator stem key 139 to force the spring collet key 144 out of the diaphragm head groove Examine these parts and the stem for wear and replace if necessary 4 Examine the retaining ring key 145 for w...

Page 10: ...re regulator is assigned a serial number which can be found on the nameplate Refer to the serial number when contacting your local Sales Office for technical information or when ordering parts When ordering replacement parts reference the key number of each needed part as found in the following parts list Separate kit containing all recommended spare parts is available Parts Lists Type EZH Main Va...

Page 11: ...etrofitting a Type EZH with pins with the new cage it is also necessary to order the Seat Ring 2 Parts are not orderable See Table 6 for sleeve assembly if it needs to be replaced 1 Body See Table 4 2 Seat Ring Stainless steel NPS 1 DN 25 Body ERAA04303A0 NPS 2 DN 50 Body ERAA04296A0 NPS 3 DN 80 Body ERAA05563A0 NPS 4 DN 100 Body ERAA10213A0 NPS 6 12 x 6 and 8 DN 150 300 x 150 and 200 Bodies ERAA2...

Page 12: ...12X12 NPS 4 DN 100 Body 16 required M5001015X12 NPS 6 12 x 6 and 8 DN 150 300 x 150 and 200 Bodies 28 required M5001015X12 Recommended Spare Part 2 Parts are not orderable See Table 6 for sleeve assembly if it needs to be replaced Type EZH Main Valve continued 23 Hex Nut Zinc plated carbon steel NPS 1 DN 25 Body 16 required 1A341224122 NPS 2 DN 50 Body 16 required 1A343324122 NPS 3 DN 80 Body 16 r...

Page 13: ...equired M5011017X12 NPS 4 DN 100 Body 4 required M5011018X12 NPS 6 12 x 6 and 8 DN 150 300 x 150 and 200 Bodies 8 required M5011018X12 34 O ring NPS 1 DN 25 Body Nitrile NBR M6010099X12 Fluorocarbon FKM M6020065X12 NPS 2 DN 50 Body Nitrile NBR M6010109X12 Fluorocarbon FKM M6020159X12 NPS 3 DN 80 Body Nitrile NBR M6010247X12 Fluorocarbon FKM M6020165X12 NPS 4 DN 100 Body Nitrile NBR M6010126X12 Flu...

Page 14: ...ody 8 required M5009048X12 NPS 6 12 x 6 and 8 DN 150 300 x 150 and 200 Bodies 12 required FA402451X12 82 Lower Spring Seat Carbon steel NPS 4 6 12 x 6 and 8 DN 100 150 300 x 150 and 200 Bodies Only 3 Recommended Spare Part 3 Included also in sleeve subasssembly Type EZH Main Valve continued 83 Ball Bearing Steel 2 required NPS 4 6 12 x 6 and 8 DN 100 150 300 x 150 and 200 Bodies Only 3 138 Travel ...

Page 15: ...ine Screw Zinc plated steel 12 required M5011018X12 11 Washer 14 required M5055001X12 12 Filter M4500367X12 13 Diaphragm Plate Stainless steel 2 required M0253390X12 14 Diaphragm Nitrile NBR GG05785X012 Fluorocarbon FKM GG05785X022 15 Diaphragm Plate Stainless steel 2 required M0253410X12 16 Body Steel M0253310X12 Key Description Part Number 17 Orifice O ring Nitrile NBR M6010003X12 Fluorocarbon F...

Page 16: ...E GE10843X012 SCH 80 BWE GE10844X012 6 150 WCC Steel CL150 RF GE11447X012 24B5837X032 CL300 RF GE11449X012 24B5837X042 CL600 RF GE11451X012 24B5837X052 SCH 40 BWE GE11452X012 24B5837X072 12 x 6 300 x 150 WCC Steel CL150 RF GE19095X012 CL300 RF GE19096X012 CL600 RF GE19097X012 SCH 40 BWE GE19093X012 SCH 80 BWE GE19094X012 8 200 LCC Steel CL150 RF FA144718X12 CL300 RF FA144717X12 CL600 RF FA144716X1...

Page 17: ... L2 L2 L2 L2 L2 L2 L2 L2 L2 4 3 2 1 6 38 35 33 32 34 33 32 31 30 29 28 27 6 26 25 24 23 22 21 10 5 7 8 9 8 62 10 11 44 13 14 4 8 10 9 8 15 16 17 18 19 20 IMPROVED TRAVEL INDICATOR DETAIL VERSION WITHOUT TRAVEL INDICATOR DETAIL NPS 1 THROUGH 3 DN 25 THROUGH 80 FOR NPS 1 DN 25 EZH SERIES VERSION ONLY FOR NPS 3 DN 80 EZH SERIES VERSION ONLY 140 S2 TOP VIEW 160 143 138 139 140 141 142B 145 144 143 1 L...

Page 18: ...GD89918_J Figure 4 Type EZH Main Valve Assembly continued NPS 1 through 3 dn 25 through 80 35 36 43 35 60 37 59 39 37 18 Type EZH Relief ...

Page 19: ...alant for nuts and bolts S2 anaerobic methacrylate sealant for threads 1 Lubricant and sealant must be selected such that they meet the temperature requirements 44 13 14 10 83 35 70 38 73 72 69 77 74 75 15 16 17 18 19 20 21 10 22 23 8 8 9 8 27 3 29 30 31 8 9 8 68 8 8 66 67 64 6 5 63 7 82 61 2 1 10 11 32 33 34 9 8 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L1 L2 L2 L2 S2 S2 S1 S1 NPS 4 DN 100 139...

Page 20: ...ubricant and sealant must be selected such that they meet the temperature requirements NPS 6 8 12 X 6 DN 150 200 300 X 150 70 83 157 158 L2 157 13 11 8 8 L2 L2 9 L2 5 8 L2 66 8 L2 64 L2 9 L2 8 L2 7 L2 61 8 L2 9 L2 8 L2 2 1 32 33 S3 10 73 72 S2 10 69 L2 69 14 15 L2 16 17 18 20 L2 21 19 22 23 25 23 27 L2 29 L2 30 34 L2 44 138 139 140 141 71 142 145 160 160 143 145 L2 L2 S2 34 197 198 2 L2 L2 FOR NPS...

Page 21: ...L sealanT S 1 l2 Silicone based OR PTFE BASED grease S2 anaerobic methacrylate sealant for threads 1 Lubricant and sealant must be selected such that they meet the temperature requirements IMPROVED TRAVEL INDICATOR DETAIL TOP VIEW 138 139 140 141 LEGACY TRAVEL INDICATOR DETAIL 143 L2 140 140 142A 138 139 140 141 143 L2 160 L2 145 144 S2 145 144 S2 TOP VIEW 142B L2 21 Type EZH Relief ...

Page 22: ...Figure 6 Type EZH Mounting Assembly 46 45 49 47 49 49 51 48 52 49 49 S port 46 45 49 47 49 49 51 48 52 49 49 22 Type EZH Relief ...

Page 23: ...ype PRX 182 Pilot Assemblies A A 22 19 17 16 18 14 13 B 15 11 20 10 11 21 22 23 24 34 B 28 29 28 34 31 S L A A L B S 28 31 29 28 34 34 22 19 14 17 16 18 14 13 1 2 3 4 5 6 7 8 9 10 11 12 B 13 15 11 20 10 11 21 25 23 24 18 11 26 35 4 4 23 Type EZH Relief ...

Page 24: ...warranties or guarantees express or implied regarding the products or services described herein or their use or applicability All sales are governed by our terms and conditions which are available on request We reserve the right to modify or improve the designs or specifications of our products at any time without notice Emerson Process Management Regulator Technologies Inc does not assume respons...

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