If the discharge of condensed water trap, centralized recovery at this point, the export back pressure of the steam trap is the resistance of the return pipe, return pipe lift height, the second evaporator ( Back to the water box) Internal pressure combined. 5. Trap petition size: the technological conditions of trap vote, on the basis of trap before and after the office differential pressure, drain water and 'seat number', according to the production manufacturer of trap technology to selection trap size parameter. So be on the basis of differential pressure of work selected displacement of the steam trap. ( Can't easily according to the size of facilities signatures matching the same size of the drain Industrial Valves, steam trap petition diameter can not be representative of the volume of the steam water, the same caliber of trap, hydrophobic experience may be the difference is very big; So when choosing trap must be based on the facilities of process conditions, reference trap production manufacturer supply to selection trap is the accurate parameter selection. Mechanical type of trap should be based on the process conditions of supreme office differential pressure and the maximum displacement both the coordinate curve corresponding to choose appropriate 'seat number'. Because when driving, quantity of air and low temperature frozen water, low inlet pressure, make the trap overload operation, the trap requirements than the normal office when the displacement is large, so according to the selection ratio 2 - Three times to select trap. ( When started to steam, steam heating facilities facilities is cold, full of air, inner demand to trap air rapidly-changing eduction, row number low temperature solidification water again, make the facilities gradually heat up, then facilities in the normal office conditions. Ability to support trap can speed up the discharge frozen water, as far as possible while driving rapidly-changing increase the temperature of the heating facilities. 4. Temperature of the steam trap: when choosing trap, according to pipe steam temperature to choose to the satisfaction of the Buddha process conditions required steam trap. Can trap emissions + 羭 enough, will cause coagulation water can not early discharge, reduce the heat rate of heating facilities. Q: accurate selection of trap conditions a: 1. Trap of thin water: when choosing trap, be sure to press facilities per hour steam consumption multiplied by the use ratio of 2 - As the biggest frozen water, 3 times to pick up steam trap displacement. Can not with a nominal pressure 'seat number', if choose the wrong 'seat number', may not show trap office or facility water, affect the normal operation of facilities. Office differential pressure refers to the office before the trap pressure minus the trap export back pressure difference. ) 。 ) 2. Office differential pressure of the steam trap: when choosing trap, can't to nominal pressure steam trap, because nominal pressure can only express drain valve body shell pressure rating, trap the difference between the nominal pressure and work pressure is very big. Pipe steam the Marine valve high temperature more than nominal pressure corresponding to maximum limit is called the superheated steam, steam temperature when picking trap in superheated steam pipe, should be chosen for high temperature and high pressure superheated steam trap. Back pressure calculation form is trap: ( When coagulation water discharged into the atmosphere after the trap, trap export back pressure is zero. ) 3. Mechanical type of trap seat number: mechanical type of trap according to different office differential pressure section, divided into a variety of specifications seat aperture 'seat number', each office pressure difference with 'seat number' of a coordinate curve of displacement, is not the same as 'seat number' of scanty water has a very big difference. Notes to the order: The national standard) A, A: B: product name, model, nominal size medium and temperature, pressure range C: whether there is attachment, delivery time, and special requirements so that we can correct selection for you. Second, if the valve has been selected by design unit of our company model, please order according to the valves parameters directly with our sales center. Three, it is very important when you use the occasion or the environment is more complex, would you please provide design drawings and detailed parameters, our engineers experts will concentrate on review and analysis for you. 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