Metallic Expansion Joints - Thorburn Flex Inc

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THORBURN FLEXIBLE PIPING SPECIALIST EXTRA-FLEX MODEL "EFS/EFD" SINGLE AND DOUBLE EXTERNALLY PRESSURIZED EXPANSION JOINT SYSTEM EXTRA-FLEX VS EQUALIZING EXPANSION JOINTS EXTRA-FLEX VS SLIP JOINTS Costly equalizing rings, usually made from gray cast iron, are an integral part of the design requirement used by some manufacturers to achieve pressures exceeding 50 psi. Thorburn Extra-Flex state-of-the-art computer-aided technology has eliminated these rings by creating a bellows which achieves high pressures without the problems associated with equalizing rings, metal erosion from ring-to-bellows vibration and ring failure due to thermal shock; these and other potentially dangerous and costly situations are avoided when Extra-Flex is applied. The vocabulary of slip joint users invariably includes the following terms: packing, leakage, periodic inspections, continual maintenance, large vaults, etc. Thorburn Extra-Flex expansion joint has eliminated these troublesome words from the expansion joint manufacturer's dictionary and replaced them with more agreeable terms: packless, all-welded construction, sealed system, leak-free and direct-burial-without-access vault. Most agreeable is the cost; substantially less than an equivalent slip joint. Page 54
THORBURN FLEXIBLE PIPING SPECIALIST EXTRA-FLEX MODEL "EFS/EFD" QUALITY YOU CAN DEPEND ON AVAILABLE WITH A FIVE YEAR EXTENDED WARRANTY CALL THORBURN FOR DETAILS Thorburn's certified welder finishing up the end plate weld on Extra- Flex EFS joint Thorburn's Extra-Flex EFS single expansion joint is normally located near an anchor at one end of a long piping run. Model EFS expansion joint should be placed with the fixed end adjacent to the anchor. Thorburn Extra-Flex double bellows "EFD" may be considered as two single "EFS" expansion joints mounted back-to-back and connected by a common casing. Thorburn Model EFD is installed in the center of a long piping run and is supplied with a support foot which acts as an intermediate anchor. SINGLE EXTRA-FLEX MODEL EFS DOUBLE EXTRA-FLEX MODEL EFD MA: Main Anchor G: Guide EFS: Extra-Flex Single EFD: Extra-Flex Double DIRECT BURIED EXTRA-FLEX Thorburn Extra-Flex expansion joints can be directly buried in steam and condensated service. This eliminates the need for maintenance manways which are inconvenient to locate and expensive to build. Years of dependable maintenancefree buried service have proven that manways are not always required nor are they cost effective. Choose Extra-Flex money-saving approach when comparing the total installed cost of slip joints versus Thorburn Extra-Flex. Shown typical Thorburn Model EFD Page 55
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Metallic Expansion Joints - Thorburn Flex Inc

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