Expansion Joints 611 612literature.puertoricosupplier.com/003/HT2364.pdf · 2010-03-16 · pipe...
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Expansion Joints 611 612 Clamp, Coupling and Restraint Products CC-611 04/06 Meets AWWA C221 Standards
Transcript of Expansion Joints 611 612literature.puertoricosupplier.com/003/HT2364.pdf · 2010-03-16 · pipe...
Expansion Joints611 612
Clamp, Coupling and Restraint Products CC-611 04/06
Meets AWWA C221 Standards
All pipelines are subject to some degree ofthermal expansion and contraction, resulting fromvariations in the ambient temperature or temperature ofthe line contents. When pipe runs are long, thetemperature differential is great or movement of thesupporting structure could occur, provision must be madeto accommodate the changes in pipeline length causedby axial movement of the pipe. Such axial movement cancause high stress that could result in damage to thepiping system and integral equipment unless provisionhas been made to allow free pipe displacement. Normalamounts of axial pipe movement can be absorbed withinthe resiliency of the rubber gasket in Smith-Blair® bolted
mechanical couplings. Where there are no boltedmechanical couplings or other flexible joints in the pipingsystem or where the amount of concentrated pipemovement at one point is in excess of what can be safelyabsorbed by a coupling or other flexible joint, anexpansion joint must be used. For detailed informationregarding the use of bolted mechanical couplings toaccommodate axial pipe movement, consult Smith-Blair®
Clamp and Coupling brochure CC-411.
Index Page No.Advantages of Smith-Blair® Expansion Joints 3Applications 4611 Expansion Joints (Single End) 5-7 612 Expansion Joints (Double End) 8-10Anchoring 11Typical Installation 12Calculating Pipe Expansion 13General Recommendations 14Installation Instructions (Available upon request)
2
Product Numberand Type Application For Pipe
SizesWorkingPressure Temperature
611 Expansion Joints Single EndWithout Slip Pipe-Without Limit RodsWith Slip Pipe-Without Limit RodsWith Slip Pipe-With Limit Rods
Welding, flanged, threaded,grooved, plain for locking orharnessed couplings, or other endconnections available.
Absorbing change in lengthof pipeline due toconcentrated pipe movementin a given area.
3" and larger
For use with any typeof pipe with sufficienttensile strength toovercome the internalfriction of theexpansion joint andwith pipe joints thatcannot pull apart
150 PSIAccording to
Size and Design
-20°F to 180°F WithStandard Nitrile Gaskets.
Higher or Lower withSpecial Gaskets.
612 Expansion Joints Double EndWithout Slip Pipe-Without Limit RodsWith Slip Pipe-Without Limit RodsWith Slip Pipe-With Limit Rods
Welded, flanged, threaded, grooved plainfor locking or harnessed couplings, or otherend connections available.
Absorbing change in lengthof pipeline due toconcentrated pipe movementin opposing directions from agiven point.
612 Expansion JointMUST always beanchored.
Pressure Balanced Expansion Joint WithoutSlip Pipe-Without Limit Rods With SlipPipe-Without Limit Rods
Welded, flanged, threaded, grooved, plainfor locking or harnessed couplings, or otherend connections available.
Absorbing axial pipemovement and pressurethrust to reduce anchorloads.
Selection Guide For Smith-Blair® Expansion Joints
Expansion Joints
Smith-Blair® Expansion Joints consist of a slippipe that telescopes within a body to compensate forchanges in the length of a pipeline. The body has apacking chamber that contains resilient packing to form aseal between the body and slip pipe. There is anadjustable packing gland to maintain the propercompaction of the packing for the joint to functionproperly while maintaining a seal. The standard packingconsists of square sections of specially compoundedrubber for sealing, alternated with identically sizedsections of lubricant impregnated fibrous material forlubrication. The design is such that repacking thegland, if required, can be easily accomplished in aminimum of time without removing the expansion jointfrom the line.
Smith-Blair® Expansion Joints are carefullydesigned and manufactured according to specificengineering requirements. Constructed of ruggedwelded steel to give long, trouble free service, they aresimple to install and require minimum maintance.
• Relief of stress buildup• Accommodate large amount of axial pipe
movement• Compact--Design requires minimum amount
of Space • Minimum pressure drop • Ample packing adjustment• Require minimum of service• No highly stressed flexing elements subject
to fatigue failure• No finite life span
Smith-Blair® Slip Type Expansion Joints areparticularly suited for applications where expansion andcontraction is frequent, or where there is large axialmovement.
Lubrication
When the service is such or the packing is of atype that lubrication will be periodically required, thepacking chamber can be fitted with a lantern ring andbutton head type lubrication fitting. When self lubricatingpacking (lubricant impregnated fibrous material) isfurnished, no lubrication fitting will be included.
Limit Rods (Optional)
Limit rods perform three important function onExpansion Joints:
• Limit the travel of the slip pipe.• When two or more Expansion Joints are installed in asection of pipe between two anchors, the limit rods willactivate the adjacent Expansion Joint when one joint hasreached the full limit of its travel.• The respective position of the limit adjusting nuts andthe limit ring indicate the position of the slip pipe withinthe body.
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Advantages of Smith-Blair®
Expansion Joints
Special FeaturesHard Chrome-Plated Slip Pipe
The exterior surface area of the slip pipe that willbe in contact with the packing during movement is hardchromeplated on a machine surface. The hard chrome-plating was selected because:
• It protects against corrosion and pitting, insuring freemovement of the slip pipe.• Its hardness resists scratching and scoring to provide asmooth surface.• Its smoothness reduces friction and wear on the packingrings.
Generous packing
The depth of the packing chamber, length of thepacking gland, size of the packing rings and quantity ofpacking are carefully designed to provide tightness of thejoint and to allow for considerable future tightening andadjustment of the packing before the addition of packingrings, or repacking becomes necessary.
Repack in the line
There is adequate space in the packing gland toadd rings of packing, or completely repack the jointwithout removing the expansion joint from the line. Thepacking gland is always accessible.
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Bridge crossings--aerial piping:Provide for thermal expansion and contraction
due to changes in ambient temperature. ExpansionJoints also provide for differential movement of thesupporting structure and pipeline.
Vertical lines in subsidence areas:Provide for change in the length of pipe due to
settlement of the building, dock, tank or other supportingstructure or subsidence of the pipeline away from a stablesupporting structure.
Joining above and below ground piping:Absorb thermal expansion and contraction of
the above ground pipe to prevent damage to the pipingsystem.
Hot water lines, hot air lines, steam lines or otherlines subject to temperature changes:
Provide thermal expansion and contractioncaused by changes in temperature of line contents.
Applications
A 16 inch pipeline was laid on this bridge at the time of construction. The bridge is approximately a mile long. The concrete deck was to be poured 160 tons at a time.Nine Smith-Blair® Expansion Joints were installed in the pipeline at approximately 600 foot intervals to absorb the change in length of the pipeline due to settlementwhen the deck was poured and to provide for thermal expansion and contraction due to changes in ambient temperature during the life of the pipeline.
A Smith-Blair® 24 inch 612 Double End Expansion Joint with stainless steelslip pipe galvanized coating.
Four Smith-Blair® 611 Expansion Joints installed on a steel bridge toaccommodate thermal expansion and contraction.
611Expansion JointsSingle End
611 Single End Expansion Joints are slip-type joints that are an excellent means of providing forexpansion/contraction in pipelines. The standard modelprovides for 10 inches of concentrated axial pipemovement (traverse). When required, Model 611Expansion Joints can be designed for any amount ofmovement--more or less than 10 inches. They areavailable in several configurations to meet varyingapplication requirements--without slip pipe without limitrods, with slip pipe without limit rods or with slip pipewith limit rods. For convenience of connecting theexpansion joint into the pipeline, they can be furnishedwith various end configurations. The ends can bebeveled for welding, flanged, threaded, grooved andplain end for use with locking type or harnessedmechanical couplings. They can also be furnished withmixed end connections, i.e., one end flanged and oneend beveled for welding, etc.
Standard model 611 Expansion Joints aremanufactured from carbon steel and furnished with ahard chrome-plated slip pipe. When service conditionsdictate, stainless steel slip pipe can be furnished or theexpansion joint can be fabricated from various types ofweldable metals such as monel, stainless steel or highstrength low alloy steel.
611 Expansion Joints can be furnished with abuilt-in anchor base when required.
Material SpecificationsBody: Carbon Steel AISI C1015-20 or ASTM A283 GR. CSlip Pipe: Carbon Steel ASTM A53, ASTM A283 or AISI
C1015-20. Hard chrome-plated on a machinedsurface.
Gasket: Alternate square rings of lubricant impregnatedfibrous packing and Nitrile (Buna-N)rubber-compounded to resist oil, natural gas, acids, alkalies, most (aliphatic) hydrocarbon fluids, water and many chemicals (contact Smith-Blair®
engineers for applications involving chemicals). Temperature range -20oF to 180oF. For higher or lower temperatures, other types of packing materials can be furnished.
Limit Rods & Body Studs, Bolts & Nuts: Highstrength low alloy steel with heavy, semi finishedhexagon nuts.
Optional: Stainless Steel hardware for corrosiveapplications to allow re-torque of packing material.
Material specifications are subject to change.
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611Expansion JointsSingle End(10” Expansion) Plain Ends Beveled for Welding
Without Slip Pipe--Without Limit Rods Open (Cold) Length 26”
When expansion joints are furnished without slip pipes, the customer is responsible for providing a smooth surfaced, properly sized slip pipe and assumes allresponsibility for proper operation of the expansion joint.The customer furnished slip pipe must have a prepared end at least 24 inches long that is round, smooth and no greater that +.030” or -.010” from nominal size.
With Slip Pipe--Without Limit Rods Open (Cold) Length 38” (L)
With Slip Pipe--With Limit Rods Open (Cold) Length 40 1/2” (L)
Larger sizes--up to 96” available on request. Other types of end connections available on request.
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Steel Pipe Size
Catalog NumberWt.
EachLbs.
NominalPipe Size
Inches
Pipe O.D.Inches
(A)3468
3.504.506.638.63
611-03501010-000 506590
125
611-04501010-000611-06631010-000611-08631010-000
10121416
10.7512.7514.0016.00
611-10751010-000 165195220250
611-12751010-000611-14001010-000611-16001010-000
18202224
18.0020.0022.0024.00
611-18001010-000 280310340370
611-20001010-000611-22001010-000611-24001010-000
Steel Pipe Size
Catalog NumberWt.
EachLbs.
NominalPipe Size
Inches
Pipe O.D.Inches
(A)3468
3.504.506.638.63
611-03502010-000 7590
125200
611-04502010-000611-06632010-000611-08632010-000
10121416
10.7512.7514.0016.00
611-10752010-000 270300335385
611-12752010-000611-14002010-000611-16002010-000
18202224
18.0020.0022.0024.00
611-18002010-000 475520560625
611-20002010-000611-22002010-000611-24002010-000
Steel Pipe Size
Catalog NumberWt.
EachLbs.
NominalPipe Size
Inches
Pipe O.D.Inches
(A)3468
3.504.506.638.63
611-03503010-000 80100150200
611-04503010-000611-06633010-000611-08633010-000
10121416
10.7512.7514.0016.00
611-10753010-000 265330380430
611-12753010-000611-14003010-000611-16003010-000
18202224
18.0020.0022.0024.00
611-18003010-000 480540595650
611-20003010-000611-22003010-000611-24003010-000
With Slip Pipe--Without Limit Rods Open (Cold) Length 39” (L)
With Slip Pipe--With Limit Rods Open (Cold) Length 50 1/2” (L)
Flanged Ends
Larger sizes--up to 96” available on request. Other types of end connections available onrequest.
Slip-type expansion joints must be installed in an accessible location for future maintenance and packingadjustment.
When more than one Smith-Blair® expansion joint is installed in a straight segment of pipe between two anchors, theymust have limit rods. The limit rods limit the movement of each joint when the pipe contracts and the internal stops*will limit the movement in each joint when the pipe expands.
*Pipe Stop Optional
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611Expansion JointsSingle End(10” Expansion) Flanged Ends
Steel Pipe Size
Catalog NumberWt.
EachLbs.
NominalPipe Size
Inches
Pipe O.D.Inches
(A)3468
3.504.506.638.63
611-03504010-000 90115165260
611-04504010-000611-06634010-000611-08634010-000
10121416
10.7512.7514.0016.00
611-10754010-000 355425515580
611-12754010-000611-14004010-000611-16004010-000
18202224
18.0020.0022.0024.00
611-18004010-000 735850930
1065
611-20004010-000611-22004010-000611-24004010-000
Steel Pipe Size
Catalog NumberWt.
EachLbs.
NominalPipe Size
Inches
Pipe O.D.Inches
(A)3468
3.504.506.638.63
611-03505010-000 95125185260
611-04505010-000611-06635010-000611-08635010-000
10121416
10.7512.7514.0016.00
611-10755010-000 350460560685
611-12755010-000611-14005010-000611-16005010-000
18202224
18.0020.0022.0024.00
611-18005010-000 740870965
1090
611-20005010-000611-22005010-000611-24005010-000
612 Expansion Joints(Double End)
612 Double End Expansion Joints are slip typejoints with a slip pipe at each end to accommodate axialpipe movement. The standard model provides for 10inches of concentrated axial pipe movement (traverse)--5inches at each end. Other lengths can be constructedaccommodating movement from 1” through 36”. They areavailable without slip pipe, with slip pipe without limit rodsor with slip pipe with limit rods. For convenience ofconnecting the expansion joint into the pipeline, they canbe furnished with various end configurations. The endscan be beveled for welding, flanged, threaded, grooved orplain end for use with locking type or harnessesmechanical couplings. They can also be furnished withmixed end connections, i.e., one end flanged and one endbeveled for welding, etc.
612 Double End Expansion Joints MUSTalways be anchored to prevent the total pipemovement form accumulating in one end.
Standard model Smith-Blair® 612 ExpansionJoints are manufactured from carbon steel and furnishedwith a hard chrome-plated slip pipe. When serviceconditions dictate, stainless steel slip pipes can befurnished or the expansion joint can be fabricated fromvarious types of weldable metals such as monel, stainlesssteel or high strength low alloy steel.
612 Expansion Joints can be furnished with abuilt-in anchor base upon request.
Material SpecificationsBody: Carbon Steel AISI C1015-20 or ASTM A283 GR. CSlip Pipe: Carbon Steel ASTM A53, ASTM A283 or AISI
C1015-20. Hard chrome-plated on a machinedsurface.
Gasket: Alternate square rings of lubricant impregnatedfibrous packing and Nitrile (Buna-N) rubber-compounded to resist oil, natural gas, acids, alkalies, most (aliphatic) hydrocarbon fluids, water and many chemicals (contact Smith-Blair®
engineers for applications involving chemicals). Temperature range -20oF to 180oF. For higher or lower temperatures, other types of packing materials can be furnished.
Limit Rods & Body Studs, Bolts & Nuts: Highstrength low alloy steel with heavy, semi finishedhexagon nuts.
Optional: Stainless Steel hardware for corrosiveapplications to allow re-torque of packing material.
Material Specifications are subject to change.
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Plain End Beveled for WeldingWithout Slip Pipe--Without Limit Rods Open (Cold) Length 36”
With Slip Pipe--Without Limit Rods Open (Cold) Length 48” L
With Slip Pipe--With Limit Rods Open (Cold) Length 54” L
Larger sizes--up to 96” available on request. Other types of end connections available on request.
When expansion joints are furnished without slip pipes, the customer is responsible for providing a smooth surfaced, properly sized slip pipe and assumes allresponsibility for proper operation of the expansion joint.The customer furnished slip pipe must have a prepared end at least 24 inches long that is round, smooth and no greater than +.030” or -.010” from nominal size.
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612Expansion JointsDouble End(10” expansion--5” each end)
Gland Bolt
Stop
Body Flange
Packing
Body Packing Gland
Packing Chamber
Gland BoltBody Flange
Stop
Packing GlandBody
Packing Chamber
PackingSlip PipeSlip Pipe
Slip Pipein ClosedPosition
Body Packing GlandPacking Chamber
Gland BoltBody Flange
Stop
Slip Pipein ClosedPositionPacking
Slip Pipe Slip Pipe
Limit Adjusting Nuts
Limit Rod Limit Rod
L
A
L
A
Steel Pipe Size
Catalog NumberWt.
EachLbs.
NominalPipe Size
Inches
Pipe O.D.Inches
(A)3468
3.504.506.638.63
612-03501010-000 6075
100145
612-04501010-000612-06631010-000612-08631010-000
10121416
10.7512.7514.0016.00
612-10751010-000 180205235265
612-12751010-000612-14001010-000612-16001010-000
18202224
18.0020.0022.0024.00
612-18001010-000 305335370400
612-20001010-000612-22001010-000612-24001010-000
Steel Pipe Size
Catalog NumberWt.
EachLbs.
NominalPipe Size
Inches
Pipe O.D.Inches
(A)3468
3.504.506.638.63
612-03503010-000 100130190270
612-04503010-000612-06633010-000612-08633010-000
10121416
10.7512.7514.0016.00
612-10753010-000 100130190270
612-12753010-000612-14003010-000612-16003010-000
18202224
18.0020.0022.0024.00
612-18003010-000 610700770840
612-20003010-000612-22003010-000612-24003010-000
Steel Pipe Size
Catalog NumberWt.
EachLbs.
NominalPipe Size
Inches
Pipe O.D.Inches
(A)3468
3.504.506.638.63
612-03502010-000 85120160230
612-04502010-000612-06632010-000612-08632010-000
10121416
10.7512.7514.0016.00
612-10752010-000 290405475530
612-12752010-000612-14002010-000612-16002010-000
18202224
18.0020.0022.0024.00
612-18002010-000 575625670740
612-20002010-000612-22002010-000612-24002010-000
612Expansion JointsDouble End(10” expansion--5” each end)
With Slip Pipe--Without Limit Rods Open (Cold) Length 56” (L)
With Slip Pipe--With Limit Rods Open (Cold) Length 71” (L)
Larger sizes--up to 96” available on request. Other types of end connections available on request.
Slip-type expansion joints must be installed in an accessible location for future maintenance and packing adjustment.
When more than one Smith-Blair® expansion joint is installed in a straight segment of pipe between two anchors, theymust have limit rods. The limit rods will limit the movement of each joint when the pipe contracts and the internal stops*will limit the movement in each joint when the pipe expands.
*Pipe Stop Optional
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Steel Pipe Size
Catalog NumberWt.
EachLbs.
NominalPipe Size
Inches
Pipe O.D.Inches
(A)3468
3.504.506.638.63
612-03504010-000 100145200290
612-04504010-000612-06634010-000612-08634010-000
10121416
10.7512.7514.0016.00
612-10754010-000 375535585725
612-12754010-000612-14004010-000612-16004010-000
18202224
18.0020.0022.0024.00
612-18004010-000 835955
10401180
612-20004010-000612-22004010-000612-24004010-000
Steel Pipe Size
Catalog NumberWt.
EachLbs.
NominalPipe Size
Inches
Pipe O.D.Inches
(A)3468
3.504.506.638.63
612-03505010-000 115155230330
612-04505010-000612-06635010-000612-08635010-000
10121416
10.7512.7514.0016.00
612-10755010-000 435555665745
612-12755010-000612-14005010-000612-16005010-000
18202224
18.0020.0022.0024.00
612-18005010-000 870103011401280
612-20005010-000612-22005010-000612-24005010-000
Flanged Ends
Anchoring:Proper anchoring is vital to the normal operation
of any piping system, whether or not expansion joints areused. Expansion joints will not function properly unlessthe pipeline in which they are located is securelyanchored and guided. Anchors serve to stabilize thepipeline where concentrated loads could occur such as atterminal points, changes in direction, valves, fitting etc.Anchors also divide the pipeline into straight runs ofindependently expanding-contracting segments, limitingthe thermal and mechanical changes in dimension toeach segment, and establishing the limits of movement tobe absorbed by expansion joints.
Pipe anchors, designed to withstand all theforces and movements which will be imposed upon them,are classed as either MAIN ANCHORS orINTERMEDIATE ANCHORS.
Main anchors are required at the terminal pointsof the piping system, valves, changes in direction,junctions, and to control the pipe movement so thatexpansion joints will function properly. Main anchorsmust be designed to withstand the full thrust resultingfrom the internal line pressure, plus the force required toactuate the expansion joint slip pipe and the frictionalforces created by the pipe guides and supports.
When an anchor is installed at a change indirection of the pipeline, there will also be a reaction forcedue to the change in direction of flow of the line contents.Some applications also require consideration of theweight of the piping system and wind loads.
As a general rule, the total force imposed on anymain anchor located in a piping system is equal to thevector sum of all forces imposed on that anchor by eachsegment of piping adjacent to the anchor, plus anyreaction force resulting from change in direction of thepiping. In the case of a reduction in line size, the totalforce is equal to the difference between the larger andsmaller force, and is applied in the direction of the smallerforce.
Intermediate anchors can be installedanywhere in a straight run of pipe between the mainanchors. They are used to divide the pipeline intostraight, independently expanding-contracting sections.The only forces to consider are the frictional forcesrequired to actuate the expansion joint slip pipe and thefrictional forces created by the pipe alignment guides andsupports. All other forces at the intermediate anchor areacting in opposition to each other, and theoreticallybecome zero.
If an Expansion Joint is installed at an anchor, itshould be within four pipe diameters.
Pressure thrust, resulting from internal linepressure, is the cross sectional area of the outsidediameter of the pipe times the line pressure (PSIG).
Force required to actuate the expansion jointslip pipe is dependent upon the pipe size and tightnessof the packing gland. A good figure to use to calculatethis is 600 pounds times the nominal pipe size.
Forces required to overcome the frictioncreated by the pipe alignment guides and pipe supportswill depend upon the type and number used. Theseforces must be obtained from the manufacturer of theguides supports.
Pipe alignment guides: Smith-Blair®
Expansion Joints are designed specifically toaccommodate axial movement of a pipeline. It isnecessary to provide proper and adequate guiding toassure free and concentric movement of the slip pipethrough the packing chamber to permit the ExpansionJoint to function in a trouble-free manner, providingsatisfactory operation and long life with a minimum ofmaintenance.
Alignment guides are sleeves or framesfastened to a rigid structure. They must be designedand constructed to permit free movement along the axisof the pipe, positively restrict any lateral movement ofthe pipe and resist corrosion to ensure continuedtrouble free service.
Proper placement of the alignment guides isvery important. The first alignment guide should belocated as close to the Expansion Joint as possiblewithin a maximum of four pipe diameters.
The distance from the first to the secondalignment guide should be up to a maximum of fourteenpipe diameters, not to exceed 18 feet. Additionalalignment guides, should be calculated to keep thepipeline from bowing and preserve the stability of thesystem as axial loading increases, since any pipelineacts as a load-bearing column.
Pipe supports, such as rollers, hangers orU-bolts, cannot be considered as alignment guides, asthey are designed to simply carry the dead weight of thepipeline and its contents.
Pipe supports: Between alignment guides andanchors, it is necessary to support the pipe at regularintervals to keep it from sagging. Supports should alsobe installed where there is concentrated loading such asvalves or other heavy fittings or equipment. Pipesupports should be designed to carry the total weight ofthe pipeline, valves, fittings and line contents. Theyshould also be able to withstand any horizontal thrustresulting from expansion or contraction of the pipe.Typical supports are U-bolts, roller supports and rodspring hangers.
In addition to the proper design and placementof anchors, guides and supports, it is equally importantto consider the design of the structure to which they willbe attached to ensure that it has sufficient strength tocarry the total load.
11
Anchoring, Guiding and Supporting Pipelines
Typical Expansion Joint InstallationsEconomy in alignment guides can be obtained by
locating an expansion joint within four diameters of ananchor. Pipe alignment guides are then required on oneside only. Expansion joints located in the line away fromanchors require alignment guides on both sides.
Typical Anchor InstallationsAnchor No. 1, 3, 4, 5, 6 and 7 are MAIN ANCHORS.Anchor No. 2 is an INTERMEDIATE ANCHOR.
Considering axial extension and compressiononly and assuming that the pipe is properly supported,the forces on each anchor will be shown below:
Pipe installed with proper anchors, alignment guides andsupports usually remain that way unless there is amalfunction or anchor failure.
LegendMain AnchorIntermediate AnchorAlignment GuideSliding Support611 Single End Expansion Joint611 Single End Expansion Joint with Limit Rods611 Single End Expansion Joint Anchored612 Double End Expansion Joint612 Double End Expansion Joint with Limit Rods612 Double End Expansion Joint Anchored
Forces in Anchors (Axial Movement Only)
Anchors 1, Pressure thrust.5 and 7 Resistance from alignment guides andsupports.
Force to activate Expansion Joint.Anchor 2 Resistance from alignment guides
and supports.Force to activate Expansion Joint.
Anchor 3 Vector sum of pressure thrusts line 1 to 3 and 3 to 4.Resistance from alignment guides and supports.Force to activate Expansion Joint.Reaction force at change of direction.
Anchor 4 Line 4 to 5Pressure thrust.Resistance from alignment guides and supportsForce to activate Expansion Joint.Reaction force at change of direction.Line 3 to 6Pressure thrust line 3 to 4 minus pressure thrust 4 to 6.
Resistance from alignment guides and supports line 3 to 4 minus line 4 to 6.Force to activate Expansion Joints Line 3 to 4 minus line 4 to 6.
Anchor 6 Vector sum of pressure thrust lines 4 to 6 and 6 to 7Resistance from alignment guides and supports.Force to activate Expansion Joint.Reaction force at change of direction.
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611 Single End Expansion Joint installed within 4 pipediameters of an anchor.
611 Single End Expansion Joint installed in the line away fromthe anchors.
611 Single End Expansion Joint installed within four diameters of an intermediate anchor.
612 Double End Anchored Expansion Joint installed in a linemid-way between two main anchors.Expansion Joints Must be Anchored
Two 611 Single End Expansion Joints with limit rods installed in a line between two anchors.
Linear Expansion of Pipe
Expansion values given are approximate, but are correct to thebest known information.
To determine the change in length of a pipeline due tothermal expansion or contraction:
1. Determine the temperature range from the maximumand minimum temperature given.
2. From the chart at the left, find the increase in inchesper 100 feet of pipe at the temperature for the type ofpipe involved.
3. Divide the increase in inches per 100 feet by 100,and multiply by the length of the pipeline.
4. Add 10% to the calculated change in length to allowfor unforeseen temperature extremes, or for installationdiscrepancies.
Example 1:500 Feet Steel Pipeline
Maximum Operating Temperature 130•FMinimum Operating Temperature -20•F
Temperature Range 150•FChange in length per 100 ft. of steel pipe @ 150•F = 1.15”
1.15 x 500 = 5.75” Change in length of 500 ft. Steel Pipe100
5.75 x 1.10 = 6.33” Allowance for thermal expansion/contraction
Example 2:800 Foot Steel Pipe Line
Maximum Operating Temperature 110•FMinimum Operating Temperature 40•F
Temperature Range 70•FChange in length per 100 ft. of steel pipe at 70•F = .532”
.532 x 800 = 4.26” Change in length of 800 ft. of Steel Pipe100
4.26 x 1.10 = 4.67” Allowance for thermal expansion/contraction
TemperatureDifferential
DegreesFahrenheit
Increase in Inches Per 100 Ft. of Pipe From 0 toTemperature Indicated
Steel Cast Iron WroughtIron
Brass &Copper
0102030405060708090
0.0000.0760.1520.2280.3040.3800.4650.5320.6080.684
0.0000.0720.1440.1260.2880.3600.4320.5040.5760.648
0.0000.0790.1580.2370.3160.3950.4740.5530.6320.711
0.0000.1140.2280.3420.4560.5700.6840.7980.9121.026
100125150175
0.760.921.151.34
0.720.881.101.28
0.790.971.211.41
1.141.401.752.04
200225250275
1.571.781.992.26
1.501.701.902.15
1.651.872.092.36
2.382.703.023.42
300325350375
2.482.732.943.31
2.352.602.903.15
2.582.863.083.46
3.744.134.455.01
400425450475
3.463.864.084.41
3.303.683.894.20
3.634.054.284.62
5.245.856.186.68
500525550575
4.674.995.305.63
4.454.755.055.36
4.905.235.555.90
7.067.558.038.52
600625650675
5.986.356.717.12
5.706.056.406.78
6.266.657.057.46
9.069.62
10.1810.78
700725750775
7.507.968.368.84
7.157.587.968.42
7.868.338.75
12.66
11.3712.0612.6613.38
800 9.31 8.87 9.76 14.10
13
Calculating Pipe Expansion
GeneralRecommendations
The expansion joint selected mustaccommodate axial movement at least equal to themaximum anticipated pipe movement.
Slip type expansion joints must always beinstalled in an accessible location to permit maintanceand adjustment.
Proper positioning of the slip pipe isextremely important when installing expansion joints.If the slip pipe is not properly positioned, theexpansion joint will not have the full axial movementdesigned into it. Axial movement of the pipe couldresult in damage to the pipeline, expansion joint orother equipment.
When dividing a pipeline into independentexpanding and contracting segments by theplacement of main anchors and intermediate anchors,it is desirable to make the segments approximatelythe same length, if possible. This will require allexpansion joints to accommodate approximately thesame amount of axial movement and simplify orordering, design and installation.
When laying long runs of pipe and installingthe expansion joints later, the practice of leavingrandom gaps in the line for the expansion joints shouldNOT BE PERMITTED. A space in the pipeline theexact length for proper adjustment of the expansionjoint should be provided at the time of installation.
When expansion joints are installed in thepipeline by welding, care must be taken that nowelding slag gets on the slip pipe.
Before applying hydrostatic tests on a pipingsystem with expansion joints, be sure all of the anchorsand alignment guides are properly installed.
Expansion joints installed below ground mustbe in a vault. Earth backfill compacted around theexpansion joint will prevent it from functioning properly.
MANDATORY ORDERING CHECKLIST
1. Quantity 2. Pipe size and type, outside diameter, and wall
thickness.3. Type of installation--steam lines, bridge crossing,
slurry line, etc.4. Line content5. Maximum working pressure.6. Maximum and minimum temperature.7. Amount of axial movement to be taken care of by
each expansion joint.8. Frequency of cycling.9. Type of slip pipe--chrome-plated, stainless steel, etc.10. Special coatings or materials requirements.11. End preparation--how will the expansion joint be tied
into the line? Welded, flanged, threaded, etc.12. How will the pipe be supported and anchored?13. Any information concerning unusual installation or
service requirements.
14
15
Product Product Number and Type Application For Pipe Sizes
622 Tapping Sleeve
Reducing and Size-on-sizeflanged outlets on all types ofpipe. Also available with threadedoutlets.
4" & larger
623 Carbon SteelMechanical Joint
Reducing and size-on-sizeflanged outlets 4" & larger
625 Tapping Sleeve forconcrete cylinder pipe
Reducing outlets on concrete steelcylinder pipe 12" & larger
626 Weld-on Outlet Reducing flanged outlet that canbe welded onto any steel pipe 4" & larger
662 Stainless Steel TappingSleeve with Flexi-BlueEpoxy coating Flange
Reducing and size-on-size flanged4" thru 12" outlet 4" thru 24"
663 Stainless Steel TappingSleeve with Stainless
Steel Flange
Reducing and size-on-size flanged4" thru 12" outlet 4" thru 24"
664 Stainless Steel TappingSleeve with Flexi-CoatEpoxy Coated Flange
Reducing and size-on-size flanged4" thru 12" outlet 4" thru 24"
665 Stainless Steel TappingSleeve with Stainless
Steel Flange
Reducing and size-on-size flanged4" thru 12" outlet 4" thru 24"
Tapping Sleeve w/MJ OutletOption Available on SB CarbonSteel and Stainless Steel TappingSleeves
See CC-620 for details
680 Series Tapping Sleevewith Line Stop Outlets See CC-620 for details
View Other Products Available at Smith-Blair®
5000/4/06/SWP
Although SMITH-BLAIR® has employed every effort to presentaccurate information, the technical performance data,installation recommendations, and specifications in this catalogare presented merely as a guide. Each application must beevaluated relative to its own “special conditions” and should bereviewed by a qualified engineer to verify that the statedpressures, temperatures, and other performance data areapplicable. Anyone making use of this information assumes allliabilities from such use.
WARRANTY: SMITH-BLAIR® warrants its products only againstdefects in materials and workmanship. SMITH-BLAIR’s® liabilityand customer’s exclusive remedy under this warranty or anywarranty extends for a period of (1) year from the date of SMITH-BLAIR’s® shipment and is expressly limited to repayment of thepurchase price, repair, or replacement, at SMITH-BLAIR’s®options during said period, upon proof satisfactory to SMITH-BLAIR® and upon customer’s returning and prepaying all chargeson such products to factory or warehouse designated by SMITH-BLAIR®. THIS WARRANTY IS MADE EXPRESSLY IN LIEU OFALL OTHER WARRANTIES. EXPRESS, IMPLIED, ORSTATUTORY, WITH RESPECT TO QUALITY,MERCHANTABILITY, OR FITNESS FOR A PARTICULARPURPOSE.
Distributed By:Sales and Manufacturing Facility
Smith-Blair, Inc.30 Globe Avenue
Texarkana, AR 71854P.O. Box 5337
Texarkana, TX 75505Phone:(800) 643-9705 (870) 773-5127Fax:(800) 648-6792 (870) 773-5212
www.smith-blair.com
