SPRING HANGERS - E. Myatt and Company

1 SPRING HANGERSCATALOGUE No. 2E. Myatt S. Brisbane Rd., Toronto, Ontario M3J 2K5 TABLE OF CONTENTSItem PageThe RIGIDa SPRING Principle s-1 Installation instructions s-1 Features s-2 General information s-2 Typical applications s-2 Design details s-3 Selection procedure and Example s- 4 Load-deflection table s-5 Item PageFig. 805 RIGIDArSPRING.. s-6 Fig. 810 RIGID,rSPRING.. s-8 Fig. 820 RIGID*' SPRING s-10 Fig. 870 Light Duty SPRING hanger .. s- 13 Fig. 880 SPRING Cushions s-13 Fig. 890 Sway Brace s-14 Constant Support HANGERS s- 14 FOREWORDW herever piping is subject to vertical movement, a simple rigid hangercan only provide proper support for the pipe in one position. Thefunction of a SPRING hanger is to provide continuous support for thepipe in all positions and relieve pipe stresses which could reach criticalproportions in the pipe itself or in connected purpose of this catalog is to provide clearly detailed informationfrom which suitable SPRING units can be selected for the widest possiblevariety of engineering staff will be pleased to review your pipe suspensionproblems with you, whether they apply to high temperature power plantpiping or to cryogenic applications with temperatures to -320 RIGID.

2 ArSPRING PRINCIPLEAS RECEIVED IN FIELDAND ERECTEDINSTALLEDasaRIGID HANGERThe locked SPRING assembly supportsand holds the erected pipe atCOLD POSITION* side-lockingboltsAFTER HYDROSTATICPIPE LINE TESTOPERATESasaSPRING HANGERWith lock-bolts removed the SPRING isfree to support pipe as it expands toHOT POSITIONSPRING PRINCIPLEThe RIGID,00` SPRING employs a unique design which overcomes the manydifficulties inherent inthe installation of variable SPRING helical SPRING in each unit is pre-set in ourshop to the pipe "cold load" position and is lockedagainst deflection UP or DOWN* until the pipe line is ready for operation, at which time the side-locking bolts are RIGID rSPRING therefore provides support to the pipe;(1)In its installed (COLD) position.

3 (2)During expansion from COLD to HOT position.(3)At its operating'(HOT) INSTRUCTIONSI nstall the RIGID,rSPRING as if it were a component part of a simple rigid pipe hanger . Take upall slack in the hanger rod, and then tighten the upper and lower hanger rod lock the pipe line and all HANGERS are completely erected, and the hydrostatic test made, remove theside-locking bolts from the housing and the SPRING is free to further adjustment the SPRING will accurately support the pipe as the pipe expands to itsoperating (HOT) event that the pipe line is required to be dismantled, replace the side-locking bolts in the RIGID ~ SPRING housing and thespring unitcan be easily removed and stpred for re-use.

4 The springlocking feature eliminates the need for extra long hanger rod threads and their tendency to strip whenbeing turned under heavy SPRING loads.*An exclusive patent of Piping Specialties, Inc.*PATENTED Manufactured in Canada under exclusive Canadian Licence from Piping Specialties Inc., New lNATURESMINERAL INFORMATION. TYPICALAPPLICATIONSRIGIDArSPRINGFEATURES S prings are manufactured to requirements of theManufacturers Standardization Society MSS-SP-58 Helical steel springs are pre-compressed to springs are calibrated and pre- set to the pipe"COLD" load before unit is furnished with a metal load indicatorscale easily readable from a welded steel housing protects the SPRING and allowsfull view of the SPRING operation through its full rangeof turnbuckle affords ample adjustment for the RHthreaded lower hanger heavy coat of high quality paint protects the unitagainst corrosion and unit is installed as a simple rigid SPRING is positively locked against UP or DOWN*movement

5 Until the pipe line is ready to INFORMATIONRIGID rSPRINGS are manufactured in three (3)major groups, identified as Figs. 805, 810 and SPRING Figure No. is available in eight (8)standard Types to satisfy various applications, andin 21 different sizes to accommodate pipe loadsranging from 53 lb to 28,680 designs are obtainable on maximumvertical pipe mvmtin working rangeTotal availablespring deflectionincluding reserve8051/2"1-3/4"8101"3-1/2"8202"7"RI GID SPRINGS are designed to allow approxi-mately 20% load variability (standard for non-criticalpipe lines) between the COLD and HOT pipe variability is conveniently expressed in percent, and is determined by the formulas:Variability (%)DifferencebetweenHOT and COLD load(or)Pipe movement x SPRING ScaleCalculated (HOT) load Calculated (HOT) load*PatentedE.

6 Myatt & CO. , TORONTO ONTARIOTYPICAL APPLICATIONSnType AL--r-T'TypeBType CType DTypeEType FTypeGs. 2 DESIGNDETAILSRIGIDAt'SPRINGD esign details of our eight (8) standard Typesof RIGID SPRING assemblies are illustrat-ed A is equipped with a RH tapped connectionfor the upper hanger rod. The turnbuckle per-mits ample adjustment for the RH threaded low-er hanger rod at all deflection positions of B and Type C are furnished with one and twoupper plates welded to the top of the springhousing to permit bolted assembly to our stand-ard Fig 530 or Fig 128 upper B may also be used with a Beam D and Type E are adaptations of the standarddesign for installation on structural channelsspaced back to back to allow clearance for thehanger F is an adjustable base mounted SPRING forthe support of base elbows or horizontal pipesfrom beneath.

7 The assembly is available withany form of modified upper G and Type H trapeze SPRING HANGERS arefor suspension of horizontal pipe lines. Turn-buckles provide adjustment for RH threadedhanger RIGID,VSPRING assemblies are furnishedwithour patented load-locking device which preventsspring deflection UP or DOWN until the side-lockingbolts are Load columnL-, guideavailablifspecified, .4,1 Type D Type E TypeFL pType A Type BIl iTypeCTypeGE . Myatt & CO. , TORONTO ONTARIOs-aSELECTIONPROCEDURE EXAMPLERIGIDArSPRINGSPRING SELECTION PROCEDUREThe Selection Procedure and a typical Example are outlined here for your . Calculate the actual pipe weight to be sup-ported and tabulate as the pipe operating(HOT) amount and direction of pipe verti-cal movement from COLD to HOT SPRING Figure No.

8 , applying movementwithin limitations as recommended hereonfor approximate SPRING variability of 20%;Recom max pipe Use Springvertical mvmt Fig. " 8051"8102"820Or determine permissible hanger load varia-tion between COLD and HOT condition to suitparticular suitable HOT SPRING load in Table onpage s-5 andselect corresponding SpringSize find COLD load, read from the Table onpage s-5 by reversing the direction of COLD and HOT load must be in samevertical column headed SPRING that SPRING No. 7 would notsatisfy this . Data: Calculated (HOT) load = 600 lbs3. Select Fig 810 SPRING (since pipe movementis less than 1"). lb load is in column headed SPRING SizeNo. Table on page s-5,SPGSIZEDEFLFl(.)

9 8810(HOT)6001"7/8" REVERSED(COLD)731 " SPRING Size No. lb HOT load731 lb COLD load2 . Data: Pipe movement(COLD to HOT) = 7/8" ample headroom is available forType A :Size No. 8 Fig. 810 RIGID.' SPRINGTypeAHOT load 600 lbCOLD load 731 lbPipe mvmt 7/8" UPE. Myatt & CO. LTD., TORONTO ONTARIO7 . Determine SPRING Type. See page s-2 forTypical Specifications are now complete and readyfor ~`SPRINGTheRIGID.' SPRING Load-Deflection tableshown on this page is a graphic chart of springdeflections from minimum load to maximumload (gray) A portion of the totalavailable deflection at each end of the springmovement is reserved to provide for some underor over-loading due to insulation, fittings orvalves which may be lighter or heavier RANGE (white) The white area in thecentral portion of the chart represents the springworking range.

10 Both HOT and COLD load posi-tions must be in the same vertical column underSpring Size, and within the actual working LOAD We recommend that every springwhich is selected operate as closely as passibleto its RATED LOAD shown in boldface type andlocated in the middle of the working DEFLECTION The actual SPRING deflectionsin inches and fractions for the three groups ofRIGID ,.' SPRINGS are listed vertically in theoutside columns. Posted directly against thedeflections are the supporting forces exertedby the springs throughout their full SCALE The SPRING scale of each SPRING isshown across the bottom of the table and in-dicates the SPRING flexibility in pounds per inchof LOAD-DEFLECTION TABLEDEFLECTIONSFROM POSITION25213363375450016000841113150112 63351646886250274336567 8805813138024537754348003271,33764359450 06000775080002532 1035106818411900142432 633 683140 1444641825011 110510814918 619 219824 8256581600619618834821959261111013474628 2585 2643571469.