Float-valve trays

Float Valve Tray Design Manual, Nutter Engineering Co., Tulsa, OHa., 1976. 

Fractionation Research, Inc. Report of Tests of Nutter Type B Float Valve Tray, July 2, 1964 from Nutter Engineering Co. 

Figure 8-69A. Nutter BDH Float valve tray with downcomer. Used by permission, Nutter Engineering, Harsco Corp.

Trays FLOAT VALVE tray Rectangular valve M Mod Med Med Med Lateral release of... 

Various types of valve arrangements are used for the valve-tray towers. Some of these are liltable disk-type valves which come as a cap with each riser. As the vapor rate increases, the valve lifts to provide a larger opening until it reaches a limit point which still directs the vapors horizontally into the liquid. Float-valve trays are designed to operate on the same principle as the liltable disk-type valves except that a floating pivotal valve is used hi each cap. 

Nutter Engineering, Nutter Float Valve Tray Design Manual, and ElectronicDesign Manual Version 2.0," Nutter Eng[ineer-ing, a Harsco Corp. (1990), Tulsa, Okla. 

Manufacturers of valve trays, such as Koch-Glitsch, Inc., of Wichita, Kansas (Ballast trays and Flexitrays), and Sulzer-Chemtech (formerly Nutter Engineering Co.), of Tulsa, Oklahoma (Float Valve Trays), have prepared proprietary design manuals. Hence, only limited discussion will be given here. As for bubble-cap trays, design methods follow those for sieve trays. The vapor capacity chart (Figure 12.29) covers valve trays, as does the alternate method of Kister and Haas. Information on liquid entrainment is proprietary, but measurements have been made by Fractionation Research, Inc. Because of the vapor flow reversal, one would not expect entrainment from valve trays to be greater than that from sieve trays. Liquid capacity considerations follow exactly those for sieve trays. 

Rectangular float valve (Nutter float valve tray)... 

Nutter Engineering Company, Float Valve Tray Design Manual, Tulsa, OK, 1976. O Connell, H.E. Trans. A.I.Ch.E., 42, 741, 1946. 

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