The photograph above shows a surge protection vessel fabricated to ASME code specifications by Sweco Fab, Inc. This vessel was purchased by a major Houston E&C firm for export to an overseas project.
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The photograph above shows hydraulic snubbers which are used to protect critical components in refineries, power plants and other industrial systems from sudden movement by the attached piping system. Engineers specify these devices for systems which are subject to sudden accelerations caused by earthquakes, extreme wind loads or water hammer. The insert at the upper left shows eight snubbers, some are different sizes and six have dust covers to protect the piston seal. The snubber at the bottom has hardware attached so it is ready to be installed. Hydraulic snubbers resist sudden rapid movement of the pipe by limiting the flow rate of the fluid inside the snubber. The device is designed so slow movement, such as would be expected during thermal expansion, has practically no resistance, but sudden rapid movement is resisted with a force proportional to the velocity raised to a power, where the power is determined by the orifice valve and flow pattern in the design. Selection of materials and liquids used will depend on the environment where the snubber is installed.
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The above photo shows an arrestor type hold down. This type of restraint is used when there is very low thermal movement. Its radius is lined with a belting material designed to absorb shock from movement. It is widely used on compressor lines or similar applications. The restraint type hold down’s clamp radius and base is lined with PT&P’s PTFE slide plate which allows for axial movement while restraining lateral movement and used on compressor lines where temperatures are high and thermal movement is great. This anchor type hold down is utilized on pipelines and require little or no insulation. It is fabricated from carbon steel and can be used in temperatures up to 750oF.
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Shown above is one of three neutralization tanks engineered and fabricated by Sweco Fab, Inc. This particular tank is being shipped to the paint contractor for painting and special interior coating.
These tanks are 12 feet in diameter, 39 feet 7 inches high, and have a storage capacity of 25,000 gallons. Special features requested by the client include clips welded on the interior for mounting of headers.
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Piping Technology & Products, Inc. announces the latest design of their “Horizontal Upthrust” base type constant support. The table or load flange move straight up or down as the weight of the pipe is transferred to the helical coil (spring) via the internal camlinkage. PTFE, 25% glass filled, slide bearings on the four corners eliminate the possibility of binding if undue axial or lateral forces are exerted. Also, PTFE, 25% glass filled, or graphite slide bearings can be added to the table to ease movement along the axis of the pipe. The Big-Ton and Type F Base Constant Supports are still available for other applications.]
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Piping Technology & Products, Inc. has designed and built thirty-two constant effort supports ranging in loads from eighty to eighty-seven kips with seven and one half inches of total travel on each.Six of the thirty-two are shown in position and they will support critical portions of the heater. The balance in other parts of the plant will support equally critical lines such as main steam and boiler reheat.
Located near Calvert, Texas, this is the second generating facility for Texas – New Mexico Power at this site. Piping Technology & Products, Inc. supplied the same material on the previous installation for this client.
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Pictured above are spectacle blinds. Piping Technology & Products, Inc. builds these for any pipe size up to 60”. A variety of metals can be used including carbon steels, stainless steels or exotic alloys depending on the pressure rating required and the environment where they must function.
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The photograph above shows one of 72 of these supports fabricated by Piping Technology & Products, Inc. for shipment to Alaska. Note that the distance between the top pipe where other components are attached and the base the support rests on can be changed by selecting the holes for the arms. These removable supports are used during installation of pipelines. Pipe sections may have other permanent supports if the pipe is above ground or the lines may be underground.
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The photograph above shows a number of fabricated components of a piping system being marked for individual packaging before shipment to the construction site at a chemical plant. The markings correspond to the assembly drawings which are used during construction to assure the many little components are efficiently installed to meet a demanding schedule. Piping Technology & Products, Inc. prepared the detail drawings and fabricated all components for a series of four projects for chemical plants in USA.
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The two pictures above show two types of polyurethane products produced by Piping Technology & Products, Inc. for piping systems. At the top are cold shoes to support piping at cryogenic temperatures. The polyurethane cradle is bonded to steel shield which is welded to a T-bar. These cradles are produced by pumping the chemical components required into a mold which gives them the correct shape. At the bottom are supports produced by drilling and machining solid polyurethane blocks. Polyurethane provides both insulation and the strength to support pipes at cold temperatures.
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