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<p>FLEXITRAY Valve TraysProven performance in all liquid-vapor contacting applications.FLEXITRAY valve trays combine high capacity and excellent efficiency with a wide operating range. Utilizing proprietary design techniques and the wide range of valve types available for FLEXITRAY valve trays, design engineers at Koch-Glitsch have the knowledge and experience to assist you in optimizing performance for your application. With Koch-Glitsch technical expertise in design, manufacturing, and installation, a well-designed FLEXITRAY valve tray generally provides the most economically attractive solution for grass-roots column construction projects.</p><p>Benefits of FLEXITRAY Valve TraysUniform vapor distribution, wide operating rangeExcellent liquid-vapor contacting for high efficiency b Reduction of the reflux ratio for a given tower diameter b Smaller tower diameter for a given feed rateb</p><p>The vapor exiting a valve is directed horizontally, rather than vertically as in a sieve tray, reducing entrainment. This also allows longer run times in fouling services because horizontal radial vapor flow at the tray floor reduces dead spots where solids can settle, polymer growth can start, or decomposition can occur.</p><p>Conventional trays are equipped with standard downcomers. The typical inlet areas under the downcomer and a bubbling area can be customized using a variety of valve types depending on the application or service.</p><p>Cost effectiveThe initial purchase price, simple installation, and reduced maintenance of the FLEXITRAY valve tray contribute to cost effective projects.</p><p>Higher capacity and low pressure dropFLEXITRAY valve trays can handle loadings up to 10% higher than sieve trays while providing higher efficiency. The contoured hole of the T0 type valve provides the lowest pressure drop per tray over a wide range of flow rates.</p><p>VersatileAn existing tower equipped with FLEXITRAY valve trays can often be used in a different application with minimum modifications because of the wide operating range, high capacity, low pressure drop, and excellent efficiency.</p><p>With these product advantages plus Koch-Glitsch technical expertise, KOCH-GLITSCH conventional trays have been installed in tens of thousands of plants worldwide. Year after year, they continue to be the trays preferred by plant operators.</p><p>1</p><p>Valve TypesKoch-Glitsch has the valve type for your application/service.Koch-Glitsch has developed a variety of valve styles to enhance the vapor-liquid contacting that takes place on a tray deck.</p><p>A - Full-size, one-piece valve</p><p>Higher capacity than standard sieve trays High efficiency Wide operating range Low pressure drop Cost effective</p><p>This is the standard, round, full-size, one-piece valve that has been used successfully in columns around the world for over 50 years. b It is provided in several leg lengths to accommodate various tray deck thicknesses.b</p><p>It is normally dimpled to help prevent sticking to the deck, but can be flush seated if needed. The orifice can be made to prevent the valve from spinning.</p><p>b b</p><p>Dual valve weights may be used in alternating rows to extend the already wide operating range.</p><p>Equivalent BALLAST designation: V-1.</p><p>T - Full-size caged valve</p><p>All the advantages of Type A valves More weepage resistance even wider operating range Increased fouling resistance fewer costly shutdowns Rugged construction resistant to corrosion and erosion</p><p>Plus:</p><p>Type T is the caged equivalent to the Type A valve. The use of this FRI(SM)tested valve precedes the Type A valve. b The Type T valve has a single moving cap with no moving legs protruding through the deck.b b</p><p>A cage assembly retains the cap.</p><p>It is more resistant to weeping and to becoming dislodged from the deck. It is more fouling resistant than the Type A valve.</p><p>b b</p><p>It normally comes dimpled, but can be flush seated as necessary.</p><p>FRI tested</p><p>Equivalent BALLAST designation: A-2.</p><p>2</p><p>T0 - Full-size, low pressure drop valve</p><p>Same as a Type T valve Contoured hole in the deck for lowest possible pressure drop</p><p>Except:</p><p>This variation of the Type T valve uses an extruded, Venturi-like orifice. b The dry tray pressure drop is thus lowered, providing an overall lower pressure drop.b</p><p>This comes with a price of higher weepage and reduced turndown.</p><p>Equivalent BALLAST designation: A-5.</p><p>VG-10 - Full-size fixed valve</p><p>Large opening size for improved fouling resistance Extended time between shutdowns Fixed opening means the valve cannot stick shut like moving valves Easy to clean less downtime Rugged, durable construction for long tray life Can be made from materials up to 0.25 (6.35 mm) thick for maximum resistance to corrosion</p><p>This is a full-size fixed valve that is anything but conventional. b The net rise typically ranges from 6 mm [0.236 in] to 14 mm [0.551 in], varying in 1 mm [0.039 in] increments. Other lifts may be available in some cases.b</p><p>This valve is also directional with the rear leg being visibly wider than the downstream front leg. As with any fixed valve, it can never become stuck to the deck nor can it spin.</p><p>b b</p><p> Using a large net rise ensures that large particles can freely pass through the deck openings.</p><p>The large net rises available plus the directional liquid flow make this an outstanding anti-fouling valve. It is widely used on anti-fouling SUPERFLUX trays.</p><p> There are no protrusions below the deck for any material to hang up on and for deposits. The liquid push is strong enough to help solid material to be flushed downstream and toward the downcomer where it can exit off the tray deck.</p><p>3</p><p>MINIVALVE decksThe MINIVALVE family of smaller-size valves provide reduced entrainment and better efficiency than conventional valve and sieve trays. The improvement in capacity can exceed 13% in spray regime services with low-to-moderate weir loadings. MINIVALVE valves exhibit a more uniform froth action on the tray deck compared to full-size valves. They are offered in both fixed (VG-0) and moveable (MV-1) styles. MINIVALVE valves are directional with the rear leg being a little wider than the downstream front leg. This gives a slight pushing action to the liquid as vapor passes through the valves. The liquid push assists in maintaining a more uniform flow pattern on crossflow trays with less retrograde action. It also helps offset vapor crossflow channeling effects to a small degree.</p><p>VG - 0 - MINIVALVE</p><p>fixed valve</p><p>Higher capacity than full-size valve trays smaller tower or more throughput High efficiency fewer trays or less reflux required Fixed opening valve cannot stick shut Formerly used on SUPERFRAC tray decks only FRI tested Cost effective</p><p>This widely-used, fixed, high-performance valve has been tested at FRI on two different sets of high capacity trays.b</p><p>The net rise can range from as low as 4 mm [0.158 in] to as high as 11 mm [0.433 in]. Recommended rises vary with deck thickness and the nature of the service. b A fixed valve can never become stuck to the deck nor can it spin. b The VG-0 valves fouling resistance is quite good. In fact, it has been used in a number of fouling applications on the decks of high performance, anti-fouling SUPERFLUX trays. b The operating range is quite good, exceeding that of a sieve tray and almost matching that of moving valves. This valve is replacing full-size, conventional moving valves in many installations.</p><p>MV-1 - MINIVALVE</p><p>moving valve</p><p>Higher capacity than full-size valve trays smaller tower or more throughput High efficiency fewer trays or less reflux required Formerly restricted to SUPERFRAC tray decks Wide operating range</p><p>Originally used only on SUPERFRAC high-performance trays, this moving valve is now available for use on conventional trays. This valve offers high capacity and efficiency AND a wide operating range. Because of the way the legs are inserted into the deck, the valves cannot spin. The valves come in two leg lengths, although the longer length is rarely needed the shorter leg accommodates most common deck thicknesses. Valves are normally furnished dimpled with tabs to space the cap edges slightly off the deck. A flush-seated style is available upon request.4</p><p>PROVALVE fixed valve</p><p>Higher capacity than full-size valve trays Maximum opening size for maximum fouling resistance and free passage Longest up time between shutdowns</p><p>The PROVALVE valve offers the wide operating range of conventional valve trays, but with no moving parts. The valve design prevents valve leg or deck wear and eliminates the potential for popped, fouled, or stuck valves.b</p><p> Fixed opening means the valve cannot stick shut b like moving valves High weepage resistance for a wide operating range Easy to clean less downtime Rugged, durable b construction for long tray life Low pressure drop b FRI tested U.S. Patent No. 5,762,834 </p><p>The tapered cover imparts a forward lateral push to the liquid across the tray, allows a large open area, and directs and deflects the vapor.</p><p>The result is uniform liquid and vapor distribution across the entire tray with a low, even spray height across the deck. This increases the trays efficiency, prevents liquid backflow, suppresses jet flooding, and permits operating at greater vapor rates. The cleansing action from the liquid push protects the tray deck from fouling. In addition, the sheltered valve design allows a large open area that promotes lower pressure drop and protects against vapor surges.</p><p>Other Conventional Trays from Koch-GlitschKoch-Glitsch has the broadest line of tray devices available in the industry.From conventional trays to high performance trays, Koch-Glitsch has the right tray for your application: Sieve Bubble cap Tunnel Dualflow Baffle </p><p>5</p><p>High Performance Trays from Koch-GlitschFor decades, Koch-Glitsch has been the driving force in tray design improvements.Koch-Glitschs design and manufacture of distillation trays have evolved from bubble cap to sieve to valve trays and now to specialty, high-capacity trays. The patented technologies used in SUPERFRAC and ULTRA-FRAC trays are the result of over twenty years of comprehensive tray development work.b b b</p><p>For new columns, Koch-Glitsch high-capacity trays can be employed to reduce diameters, heights, or both. In total, our high-capacity trays have been employed in over 1,000 columns.</p><p>For existing columns, they can replace existing trays to increase capacities, reduce utilities, or improve separations.</p><p>SUPERFRAC High Performance TraysThe SUPERFRAC tray is a high performance crossflow tray that has the highest combined capacity and efficiency of all crossflow trays tested at FRI.The unique combination of SUPERFRAC patented technologies and design strategies produces the high capacity and the maximum vapor/liquid contact efficiency achieveable on a crossflow distillation tray. These technologically advanced trays employ innovative downcomer designs and enhancements in the active and inlet areas to provide:b b b</p><p>Highest combined capacity and efficiency Minimal pressure drop Optimum mass transfer efficiency</p><p>As a result, the SUPERFRAC tray gives the highest economic benefit to operators of distillation columns seeking solutions for both new construction and revamp projects.</p><p>ULTRA-FRAC High Performance TraysExpand your capacity not your vessel.The ULTRA-FRAC tray is the next logical step to increased capacity in existing vessels:b b</p><p>Highest capacity commercial mass transfer device Multiple separators produce co-current flow</p><p>With these trays, existing columns can be retrofitted, resulting in significant capacity increases without the major capital expenditures and space requirements of building new columns. One-for-one change-outs of existing trays are possible for many services. ULTRA-FRAC trays offer:b b b</p><p>Superior liquid handling Superior vapor handling Foam suppression</p><p>6</p><p>Construction DetailsMetalTrays are available in any formable, weldable sheet metal material. The most common materials for trays are:b b b b b</p><p>Scope of Supply</p><p>For the trays in this brochure, Koch-Glitsch supplies all removable parts. The trays do not include vessel attachments for connection or support, unless specifically stated in the item description. Vessel attachments may be quoted/supplied separately. Examples of attachments that may be required are:b b b b b b</p><p>Carbon steel</p><p>Stainless steel, Ferritic, Austenitic, Duplex, Martensitic Nickel alloys Copper alloys</p><p>Titanium, Zirconium</p><p>Support rings Sump frames</p><p>Trays are not normally stress relieved or annealed and typically do not conform to pressure vessel standards. Trays fabricated from sheet metal materials are typically supplied in as-sheared condition.</p><p>Internal flanges at feed inlet nozzles Wall clips for support Beam seats Downcomer clamping bars</p><p>Bolting</p><p>Standard bolting conforms to AISI specifications. Bolting conforming to ASME specifications is available upon request.</p><p>Minimum Support Ring WidthsAll dimensions are expressed as inches (millimeters) TOWER ID Up to 18 (Up to 457) 18.1 - 24.24 (458 - 615) 24.25 - 48.24 (616 - 1225) 48.25 - 72.24 (1226 - 1835) 72.25 - 96.5 (1836 - 2450) 96.6 - 144.5 (2451 - 3670) 144.6 - 168.7 (3671 - 4285) 168.8 - 216.3 (4286 - 5495) 216.4 - 240.5 (5496 - 6110) Trays Resting on or Clamped to Support Ring 0.75 (20) 1.0 (25) 1.5 (40) 2.0 (50) 2.5 (65) 3.0 (75) 3.5 (90) 4.0 (100) 4.5 (115) Trays Through-Bolted or Using Leveling Screws 1.5 (40) 1.5 (40) 2.0 (50) 2.0 (50) 2.5 (65) 3.0 (75) 3.5 (90) 4.0 (100) 4.5 (115)</p><p>Certification</p><p>Material certification is available for all fabricated internals. Positive Material Identification (PMI) testing is available upon request.</p><p>Gasketing</p><p>For multi-piece trays requiring gasketed joints, many choices of gasket material are available. Where gasketing is required, braided fiberglass tape is supplied as the standard for linear joints. Depending on the service, KLINGERSIL C-4401, expanded PTFE or spiral wound stainless steel with flexible graphite filler gaskets are supplied as the standard for flanged connections. Other gasket materials are available upon request.</p><p>Manway Access</p><p>All trays are designed in sections to pass through vessel manways. Tower internals are designed to pass through a vessel manway of 18 in [450 mm] minimum inside diameter, unless otherwise specified. Larger manways often provide the ability to optimize the design of components for faster, easier installation. Please provide manway locations and inside diameters at the time of inquiry.7</p><p>If the support ring size is other than these listed above, special consideration must be given to the plate diameter and vessel tolerances.</p><p>Feed DevicesObtaining desired tower performance requires the proper handling of liquid and vapor entering the column. The types of feeds or inl..</p>