Size factor

VARIABLE OR CONSTANT BACKPRESSURE SIZING FACTOR. K,. FOR BALANCED BELLOWS SAFETY RELIEF VALVES (VAPORS AND GASES)... 

Figure 12. Variable or constant back pressure sizing factor Kb for balanced bellows safety relief valves (vapors and gases).

Figure 17. Variable or constant back pressure sizing factor, Kw for 25% overpressure on balanced bellows safety relief valves (liquids only). The curve represents conqiromise of the valves reconunended by a number of relief valve manufacturers. This curve may be used wiien the make of dw valve is not known. When the make is known, the manufacturer should be consulted for the correction factor.

Size Factoring Exponents It is possible to estimate the cost of equipment from the cost of a similar piece of equipment with different size using size factoring or scaling exponents as follows ... 

Figure 13-8 Bock-pressure sizing factor K, for balanced-bellows pressure relief valves—vapors ono gases.

Van der Waals interactions 0.4-4.0 0.2 Strength depends on the relative size of the atoms or molecules and the distance between them. The size factor determines the area of contact between two molecules The greater the area, the stronger the interaction. 

C, = Discharge Factor from Chart Cz = Size Factor, from Table 2-11... 

Factor for correctinj to other pipe sizes Factor for correcting to other pipe sizes ... 

Size factor from Table 2-11, use with equation on Figure 2-31... 

Figure 7-22. Liquids overpressure sizing factor, Kp, for other than 25% overpressure. Applies to Non-code iiquids oniy using conventional and balanced valves. By permission. Teledyne Farris Engineering Co.

VARIABLE OR CONSTANT BACK PRESSURE SIZING FACTOR... 

Figure 7-27B. Variable or constant backpressure sizing factor, K , at 21 % overpressure, BalanSeal valves only vapors and gases. By permission, Teledyne Farris Engineering Co.

Limiting size factor Material / Material plane Equipment profile Material revolution Equipment Equipment plane Equipment Material plane Material Equipment plane Mold Size... 

Limiting size factor Mold size Bag size Lathe bed length and swing Pull capacity Press capacity Press dimensions... 

---