Metallic Expansion Joints - Thorburn Flex Inc

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THORBURN FLEXIBLE PIPING SPECIALIST COMP-FLEX HPC SERIES HIGH PRESSURE EXPANSION COMPENSATORS WITH COPPER TUBE ENDS DESIGN DETAILS Pipe expansion: 2" Pipe contraction: 0.5" Working pressure: 175 psi Test pressure 250 psi Temperature range: -320ºF to +400ºF Cycle life: 10,000 full stroke cycles CTC-509 MALE COPPER TUBE ENDS CTC-510 MALE/FEMALE COPPER TUBE ENDS Size Code Copper Actual Overall Outside Socket CTC-509 Tube Tube O.D. Length Diameter Length Weight CTC-510 Size (in.) (in.) (in.) (in.) (in.) (lbs) 12 0.75 0.875 11.000 1.500 0.750 0.7 16 1.00 1.125 11.250 2.375 0.875 1.0 20 1.25 1.375 12.500 2.500 1.000 1.5 24 1.50 1.625 12.875 2.500 1.188 2.0 32 2.00 2.125 13.188 3.000 1.375 2.4 40 2.50 2.625 13.500 4.000 1.500 3.6 48 3.00 3.125 14.000 4.500 1.750 4.0 56 3.50 3.625 14.500 5.000 2.000 4.5 64 4.00 4.125 14.500 5.563 2.000 6.0 HOW TO ORDER COMP-FLEX SERIES CTC Part Number Size Code CTC-509 16 Thorburn Comp-Flex Series CTC 1" nominal c/w male copper tube ends Axial Tabulated Force (Pounds) for Individual Pressure Size Code Copper Spring Eff. CTC-509 Tube Rate Area 50 75 100 125 150 175 250 CTC-510 Size (in.) (lb./in.) (in. 2 ) psi psi psi psi psi psi psi 12 0.75 118 1.1 55 82 109 137 164 191 274 16 1.00 101 1.7 86 129 172 215 258 301 430 20 1.25 95 2.4 121 181 242 302 363 428 605 24 1.50 90 3.2 162 243 324 405 485 566 809 32 2.00 140 5.1 256 385 513 641 769 897 1282 40 2.50 128 7.6 378 568 757 947 1136 1325 1893 48 3.00 158 10.6 528 791 1055 1319 1583 1846 2638 56 3.50 186 16.9 845 1268 1690 2114 2536 2959 4227 64 4.00 373 17.9 897 1347 1795 2243 2692 3140 4486 Copper Overall Size Tube Length Weight Code Size (in.) (lbs.) CTC511-12 0.75 12.625 1.00 CTC511-16 1.00 13.313 1.40 CTC511-20 1.25 25.750 2.10 CTC511-24 1.50 15.250 3.80 CTC511-32 2.00 15.688 4.80 Page 66
THORBURN FLEXIBLE PIPING SPECIALIST PRESSURE BALANCED EXPANSION JOINTS ELBOW OR TEE SING-FLEX SERIES "PBES" AND UNIVERSAL SERIES "PBEU" FEATURES ■ Absorbs axial and lateral movements while still restraining pressure thrust ■ Eliminates main anchors ■ Minimum guiding required Typical Thorburn Model PBES pressure balanced elbow. These units are custom to suit specialized application requirements. Thorburn's Series PBES Sing-Flex and PBEU Universal are custom designed pressure balanced elbow or tee expansion joint systems. These joints are specifically designed to overcome the reaction load, due to internal pressure acting against turbine casings, pumps, structures and other equipment. They are used at a change in direction of piping where a main anchor cannot be installed, to absorb axial and lateral motion while restraining pressure thrust. Thorburn's pressure balanced expansion joint design uses flow and balancing bellows that are inter-connected by the use of tie rods. The balancing bellows is subjected to the same line pressure as the flow bellows. As the flow bellows compresses, the tie rods make the balancing bellows extend an equal amount. Since there is no change in the volume of the system, the pressure forces remain in balance. It should be noted that when the flow bellows deflect laterally, there is no volume change and therefore the balancing bellows need only contain the proper number of convolutions required to absorb the axial movements of the system. The axial force, however, is the total of the force required to move the line bellows and balancing bellows. A B C D E F G Flow bellows Balancing bellows Tee or elbow connector Tie rods Mean diameter of corrugations Pressure thrust of the line Reaction pressure thrust on the balancing end How does Thorburn's axial pressure balance work? Internal pressure causes a pressure thrust on flow bellows (A) and against the side outlet (elbow or tee) (C). This thrust is balanced by the identical internal pressure thrust (G) pushing on balancing bellows (B) that is transmitted back through the tie rods (D) counteracting the line pressure thrust (F). The force remaining is the axial spring force required to compress line bellows (A) and extend balancing bellows (B), plus whatever friction load is generated by the piping moving through the alignment guides. A schematic illustration showing the principle behind Thorburn pressure balance flexible piping technology. TYPICAL APPLICATIONS Thorburn's pressure balanced expansion joints are used where there is a change in the direction of the pipe line. The most common applications for Thorburn's pressure balanced elbow is adjacent to a piece of equipment such as a turbine, pump or valve where allowable nozzle loads necessitate the elimination of pressure thrust. Shown is a typical pressure balanced elbow used where there is a change in the direction of the piping. Page 67
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Metallic Expansion Joints - Thorburn Flex Inc

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