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The new product has the same thermal insulation as standard rigid PU foams, but can withstand long-term temperatures of up to 200°C (250°C for short periods). The heat-resistant PU is made by using excess isocyanate; when the foam hardens, the excess isocyanate molecules react to form a more densely cross-linked polyisocyanurate, says the firm. com/4517-485 Kit helps this trap and others accommodate wider pressures Rugged, inexpensive and in-line repairable, Dura-Flo Inverted Bucket Steam Traps (photo) are made from durable/heavy walled cast iron bodies for use on steam lines, process equipment, laundry equipment, steam cookers, steam heated vats, pressing machinery, unit heaters, oil preheaters, converters, coils and rotating drums.
The alarms become a nuisance to operators, who eventually will ignore or turn them off if the chattering (repeated activation) continues. During normal operation, it is not uncommon to have one alarm activated every one to two minutes, with some alarms chattering throughout a shift. When incidents occur, there can easily be 30 to 50 alarms per minute – 600 alarms per minute in extreme cases. Why so many alarms? Alarms have proliferated as manufacturing processes and equipment have become more complex, demanding and dangerous.
The discharge valve, when set to test position, isolates the discharge side of the trap, blocking its outlet port, so that trap function can be checked and downstream depressurization can be done. The standard model has a maximum operating pressure rating of 300 psig (21 barg), with a maximum operating temperature rating of 421°F (198°C). The USTS-HP (high pressure) model is rated at 650 psig (45 barg) and 750°F (399°C). In addition to the manufacturer’s brand, the station will support third-party universal connector-type steam traps.