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Head covers

This heading covers such a large number of products and applications that it is difficult to give a complete inventory. For this reason the standards organizations, starting with ISO (International Organization for Standardization ), have published a series of standards to classify these products. [Pg.275]

Unstayed flat heads and covers can be designed by very specific rules and formulas given in this subsection. The stresses caused by pressure on these members are bending stresses, and the formulas include an allowance for additional edge moments induced when the head, cover, or blind flange is attached By bolts. Rules are provided for quick-opening closures because of the risk of incomplete attachment or opening while the vessel is pressurized. Rules for braced and stayed surfaces are also provided. [Pg.1024]

The floating-head cover is usually a circular disk. With an odd number of tube-side passes, an axial nozzle can be installed in such a floating-head cover. If a side nozzle is required, the circular disk is replaced by either a dished head or a channel barrel (similar to Fig. 11-36/) bolted between floating-head cover and floating-tube-sheet sldrt. [Pg.1070]

With an even number of tube-side passes the floating-head cover serves as return cover for the tube-side fluid. With an odd number of passes a nozzle pipe must extend from the floating-head cover through the shell cover. Provision for both differential expansion and tube-bundle removal must be made. [Pg.1070]

Tube-Side Passes Most exchangers have an even number of tube-side passes. The fixed-tube-sheet exchanger (which has no shell cover) usually has a return cover without any flow nozzles as shown in Fig. 11-35M Types L and N are also used. All removable-bundle designs (except for the U tube) have a floating-head cover directing the flow of tube-side fluid at the floating tube eet. [Pg.1070]

For an exchanger AAith alloy parts and a design pressure of 150 Ibf/im, the alloy extras are added. For shell and shell cover the combined alloy-pressure extra is the alloy extra times the shell-side pressure extra/100. For channel and floating-head cover the combined alloy-pressure extra is the alloy extra times the tube-side pressure extra/100. For tube sheets and baffles the combined alloy-pressure extra is the alloy extra times the higher-pressure extra times 0.9/100. (The 0.9 factor is included since baffle thickness does not increase because of pressure.)... [Pg.1075]

Stationary Head—Bonnet 21. Floating Head Cover—... [Pg.23]

Gasket materials Metal jacketed or solid metal for (a) internal floating head cover. (b) 300 psi and up. (c) all hydrocarbons. Metal jacketed or solid metal (a) internal floating head. (b) 300 psi and up. Asbestos permitted for 300 psi and lower pressures. (same as TEMA C)... [Pg.24]

In the pull-through, floating-head design, the floating-head cover is bolted directly to the floating tubesheet. This allows the bundle to be removed from the shell without removing the shell or floating-head covers, which eases inspection... [Pg.33]

The rotating type may be driven from either the top or the bottom whilst the vibrating type is always driven from the top. The removal of the tank head cover from top driven filters is generally more complex than those driven from the bottom. On the other hand bottom driven filters are more susceptible to slurry leaks. The position of the cake outlet depends on the construction of the tank bottom. There are two types available ... [Pg.194]

Stationary Head—Bonnet 2J. Floating Head Cover—External... [Pg.54]

Floating Head Cover Flange 37. Support Bracket... [Pg.5]

Sheli Cover Bolted to Shell. Shell Cover Bolted to Shell. Floating Head Caver Baited ta Floating Head Cover Boited Tube Sheet or its Backing Ring. Expansion of Tube Bundle to Tube Sheet or its Provided by External Packing Gland or by Internal Bellows... [Pg.9]

In order to allow for the removal of the tube bundle and for considerable expansion of the tubes, a floating head exchanger is used, as shown in Figure 9.63. In this arrangement one tube plate is fixed as before, but the second is bolted to a floating head cover so that the tube bundle can move relative to the shell. This floating tube sheet is clamped... [Pg.504]

Wear gloves and lab coat with M9 or Ml 7 mask readily available for general lab work. In addition, wear daily clean smock, foot covers, and head cover when handling contaminated lab animals. [Pg.4]

In addition, wear daily clean smock, foot covers, and head covers when handling contaminated lab animals. [Pg.14]

Wear full protective clothing consisting of the M3 butyl rubber suit with hood, M2A1 boots, M3 gloves, underwear, M9 series mask and coveralls (if desired). For general lab work, wear gloves and lab coat with M9, Ml7, or M40 mask readily available. In addition, wear daily clean smock, foot covers, and head cover when handhng contaminated lab animals. [Pg.34]

CHANNEL CHANNEL COVER FLTNG HEAD COVER 41... [Pg.993]

See other pages where Head covers is mentioned: [Pg.136]    [Pg.174]    [Pg.251]    [Pg.1068]    [Pg.1068]    [Pg.1070]    [Pg.1070]    [Pg.1070]    [Pg.1070]    [Pg.1075]    [Pg.1075]    [Pg.357]    [Pg.23]    [Pg.23]    [Pg.412]    [Pg.33]    [Pg.201]    [Pg.54]    [Pg.5]    [Pg.765]    [Pg.28]    [Pg.11]    [Pg.17]    [Pg.19]    [Pg.22]    [Pg.28]    [Pg.45]    [Pg.265]    [Pg.641]    [Pg.83]   
See also in sourсe #XX -- [ Pg.37 ]



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