Flanged standard-dished heads

Faetor for determining the eapaeity (gal) for the bottom head = 0.606 for ASME Standard flanged and dished heads Total heat transfer surfaee area, ft ... 

Standard dished head AS ME flanged and dished head ... 

It should l>e emphasized that because of the high localized stresses due to the small inside-comer radius, the use of flanged and shallow dished heads and flanged and standard dished heads is not permitted in vessels which must meet pressure-code requirements. 

Table 5.5 gives the dimensions of flan d and shallow dished heads. Table 5.6 gives the dimensions of flanged and standard dished heads except for the radius of dish. The radius of dish varies with thickness and diameter, and... 

Figure 4-3. Various types of more common formed heads a, flanged only b, flanged and shallow dished c, flanged and standard dished d, ASME Code flanged and dished (torispherical) e, elliptical dished (ellipsoidal) f, hemispherical g, flanged and conical dished (toriconical).

Table 5J1. Standard Straight Flanges for Available i-tSME Code Elliptical Dished Heads...

Head diameters based on the inside diameter are available in increments of 2 in. from 12 to 42 in. and in increments of 6 in. from 42 to 216 in. Table 5.11 gives the standard straight flanges for various elliptical dished heads. The manufacturer s catalog should be consulted ft r the maximum straight flange available at extra cost. The volume... 

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