1. Trap the sparse amount of water: Use traps, you must press equipment, the consumption of steam per hour multiplied by the selected magnification 2-3 times the maximum condensation of water, to select the trap displacement. Can we ensure that trap while driving discharge condensate as soon as possible, rapid increase in the temperature of heating equipment. 2. Trap working pressure: Selected trap, the trap can not be selected nominal pressure, as nominal pressure can only say that traps body shell pressure rating, trap nominal pressure and work pressure varies greatly.3. Mechanical-type steam traps Seat number:
Mechanical-type trap according to different working pressure section of the butterfly valve seat aperture is divided into a variety of specifications of "seat number", each segment of work pressure and the "seat number" composed of a coordinate displacement curve, different "seat number "of the sparse amount of water are very different. 4. Trap operating temperature: Use traps when the maximum temperature according to the steam pipes to choose the process conditions to meet the requirements of traps. 5. Trap connection size:
The decision process conditions trap after the trap before and after the work under the pressure to drain water and the "seat number", according to the technical parameters of trap manufacturers to choose the size of trap specifications.

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