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About Steam Traps
Steam traps are automatic valves that release condensate from a steam space while preventing the loss of live steam. They also remove air and noncondensables from the steam space. Steam traps can be roughly separated into three groupings, thermostatic, mechanical, and kinematic; each of which contains a number of specific styles.
Thermostatic steam traps open and close with the expansion and contraction of a temperature-sensitive element. These traps operate on the difference in temperature between steam, the cooler condensate, and air. This classification includes balanced traps, bimetallic traps, and pinch traps. Balanced pressure steam traps open and close via the expansion and contraction of a temperature-sensitive element that responds to the lower temperatures created by the condensate and noncondensable gases in the trap. The operating unit within the trap, a pressure-balanced disc or bellows, is filled with a liquid having a saturation temperature slightly below that of water. Bimetallic traps have a metal element with the proper coefficient of expansion for the application. Pinch traps use self-regulating action. The pinching modulator begins to automatically close off flow as the wax around the modulator expands with the passage of hot condensate. As the condensate builds up and cools the wax around the modulator contracts allowing the orifice to open and create flow.
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Engineering Web: Steam Traps
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ISA | Steam Traps - Types, Principles & Functions include: ? Identifies steam states including steam quality ? Describes the effects of condensate, entrained water and in a steam system ? Lists the See International Society of Automation Information |
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Hoffman Specialty steam traps, valves, boiler feed units,... Our extensive line of products includes: Steam Traps, Regulators, Vents, Valves, Pumps, Y-Strainers, Vacuum Breakers and Heat Exchangers. See Hoffman Specialty Information |
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Flowserve Corporation - Steam Systems A ball float steam traps with rolling ball valve. |
Part Numbers for Steam Traps
| Part # | Distributor | Manufacturer | Product Category | Description |
|---|---|---|---|---|
| 4NU74 | Grainger Industrial Supply | MCDONNELL & MILLER | Steam Traps | Steam Trap,3/4 In |
| 2CMN6 | Grainger Industrial Supply | MCDONNELL & MILLER | Steam Traps | TD6528 Replacement Disc Kit |
| 2CMK2 | Grainger Industrial Supply | MCDONNELL & MILLER | Steam Traps | Thermostatic Element, 175 psi |
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