Strainers & Filtration

A duplex strainer can operate continuously and never has to be shut down for cleaning. When one basket is full, the flow is shifted to the other one. The first basket is then removed, cleaned and replaced. Duplex strainers or double basket strainers, are valuable in locations where it is impossible to shut off flow to stop the operation. Examples of these processes include cleaning fuel oil in large industrial oil burners, all types of marine applications, screening water in cooling towers and straining fluids in continuously running chemical operations. Eaton Model 53BTX Ball Type Duplex Basket Strainer Sizes 3/4" to 4" Iron, Bronze, Carbon Steel or Stainless Steel Threaded or Flanged The unique flow diverter cartridge features highly dynamic sealing system that ensures exceptionally long seat life and positive sealing. There is no need for manual internal or external ball support adjustments—and the low operating torque means the strainer can be operated with an easy-turn handle. A gear box is not needed. A double sealing system on both the upper and lower stems guards against any possible leakage. Special reinforced polymer seats are used for extended service life. Should cartridge service become necessary, just remove four bolts and the cartridge comes right out through the top of the strainer. There’s no need to take the strainer completely apart or to remove it from the line. For easy basket servicing there are two drain plugs, one on each side. Additionally, there is an easy-to-access vent valve on top of each basket well cover. Finally, standard foot mounting pads insure a rock solid installation no matter where the strainer is installed.  Features: Dynamic ball sealing system for long life  Easy-to-operate lever handle—no gear box required  Unique seat and seal design requires no adjustments  Reinforced polymer seats for longer service life  Foot pads for rock solid installation  Double-stem O-rings for positive sealing  Easy-to-access body vent valve  Side drain plugs on each basket well  Piston seal strainer basket cover  Easy access for diverter cartridge removal  Optional steam jacket construction  Available options:  Differential pressure gauges, with or without switches, and magnetic separators installed in the strainer basket for removing fine ferrous particulate matter from the process media. Eaton Model 50 Plug Type Duplex Basket Strainer Sizes 5", 6", 8" Iron, Bronze, Carbon Steel or Stainless Steel Flanged The Eaton Model 50 Plug Type Duplex Strainer is a simple, economical, and trouble free design–time tested in applications around the world over many years. This type of strainer is actually a high quality, pressure rated plug valve with integral straining baskets. Switching the flow from one basket to the other is accomplished by moving the operating handle through a 90 degree arc. The design is such that is impossible for this operation to stop the flow because of the unique port design in the diverter plug. The entire switching operation takes less than 30 seconds. No tools are needed. The plug is automatically positioned each time in exactly the right spot by integral stops. The Eaton plug type Model 50 Duplex Basket Strainer is your best choice for most applications. Its rugged design and ease of operation have made it the duplex strainer of choice around the world in hundreds of different industries. Features: Continuous flow, no shutdown for basket cleaning  Rugged tapered plug design  Lift jack prevents galling of the plug  Quick open cover, no tools needed  Large capacity baskets  Threaded drain  Machined basket seat  Perforated or mesh stainless steel basket  Available options:  Ductile iron construction, Basket perforations from 1/32" to 1/2", Basket mesh from 20 to 400, Monel baskets, Vent valves, Drain valves, 1/4" NPT gauge taps, Magnetic basket inserts, Steam jacket, Pressure differential gauge and switch connections, Viton, PTFE encapsulated or EPDM seals. Eaton Model 50 Large Duplex Basket Strainer 10" to 18" Iron and Bronze Flanged The Eaton Butterfly Valve Type Model 50 Duplex Basket Strainer is a special design with several important features and advantages for large size pipelines with high flow rates. Flow is switched from one basket chamber to the other by a set of synchronized, high quality butterfly valves. This replaces the diverter plug used on smaller size strainers and gives a straight flow pattern with no sudden changes in flow direction. The result is a very low pressure loss. Features: Continuous flow—no shutdown for basket cleaning  Compact butterfly valve design  Quick opening covers  Convoluted-design baskets  Threaded drain  Perforated or mesh stainless steel baskets  Vent  Positive shutoff Available options:  Ductile iron construction, Basket perforations from 1/32" to 1/2", Basket mesh 20 or 40, Monel baskets, Vent valves, Drain valves, 1/4" NPT gauge taps, Pressure differential gauge and switch connections, Magnetic basket inserts.

A simplex basket strainer is used where the line can be shut down for short periods to clean or change the basket. It becomes an integral part of the pipeline, and all flow passes through it. A basket strainer is installed upright, and the basket is lifted out from the top. This makes it easier to use with gummy or sticky fluids or with large pipeline sizes where the filled basket weight can be considerable. However, unlike a Y strainer, it also means that a basket strainer must be installed in a horizontal line. Eaton Model 72 Simplex Basket Strainer Sizes 3/8" to 8" Iron, Bronze, Carbon Steel or Stainless Steel Threaded or Flanged The Eaton Model 72 Simplex Basket Strainer is perfect for industrial and commercial applications where the line can be temporarily shut down for strainer basket cleaning or changeout. This model comes with a large basket capacity. The free straining area with a perforated basket is about six times the cross-sectional pipe area. The quick opening, swinging yoke can be disassembled and the basket removed in seconds. On sizes 4" and larger, a special cover clamp is provided to distribute the seating pressure and to ensure positive seating of the cover. Each comes with a threaded drain on every size strainer (fitted with a plug). Sizes 2" and larger are provided with legs that bolt to the floor for rock solid installation. The basket seats are precision machined to give a tight seal and prevent any material from by-passing the basket. Features: Quick open cover—no tools needed Heavy wall construction Large capacity baskets Machined basket seat Threaded drain Perforated stainless basket Mounting feet for stable installation Available Options: Basket perforations from 1/32" to 1/2", Basket mesh from 20 to 400, Monel baskets, Viton, PTFE-encapsulated, or EPDM seals, Vent valves, Gauge taps - 1/4" NPT, Magnetic basket inserts, Pressure differential gauge and switch. Eaton Model 72 Large Simplex Basket Strainer Sizes 10" to 18" Iron or Bronze Flanged Large size pipelines with high flow rates require a unique type of basket strainer. The typical design for smaller size pipelines just won’t perform efficiently—the pressure loss would be too high and the baskets too large to remove and clean easily. These problems have been solved by the Eaton Straight Through Flow design simplex basket strainer. With this straight through flow, pressure loss is greatly reduced and results in a compact strainer that can fit in tight spaces. The perforated or mesh straining screen in the basket is convoluted (pleated). This increases the amount of straining area available while at the same time reducing the overall basket size and weight. This makes it easy to remove the basket from the strainer housing. No lifting tackle is required. The quick opening cover provides fast and easy access to the basket—making it quick and easy to service. Over time, this can save you considerable time and money in labor. When selecting a pipeline strainer for a large size piping system with high flow rates, be sure to consider all the factors, not just initial pressure loss. The amount of straining area in the basket is critical to reducing the amount of time between cleanings or change out Features: Quick open cover Straight through flow design Low pressure loss Convoluted basket design Hand removable basket Threaded Drain Buna-N O-ring seal Standard perforated stainless steel basket Low profile No tools required for access Available Options: Basket perforations from 1/32" to 1/2", Basket mesh of 20 or 40, Monel baskets, Vent valves, Drain valves, Gauge taps - 1/4" NPT, Pressure differential gauge and switches. Eaton Model 90 Fabricated Simplex Strainer Sizes 4" to 24" Carbon Steel or Stainless Steel Flanged The Eaton Model 90 Fabricated Simplex Strainer has been designed for manufacturing flexibility. It can be made for pipeline sizes from 1? to 48? in carbon steel or stainless steel although other materials can be specified. Three different ratings of flange connections are commonly available: ANSI Class 150, 300, and 600. Higher pressures are also available. The strainer features an in-line design that adapts to most applications. Two different types of covers are available. The simplest type is the bolted cover which is simple and cost effective and works well in applications where basket changing is infrequent. A davit assembly can also be specified for larger strainers with heavy covers. This makes it possible for a single person to remove the cover of the strainer. Features: Sizes from 4? to 24? - As Standard Available in Carbon Steel - Stainless Steel Flanged ANSI Class 150 and 300 - As Standard Flanged Class 600 and higher - Available on request Two cover types available: quick opening hinged and bolted blind Davit assembly optional Basket material: stainless steel, 1/ 32? to 1/ 2? perforation diameter. 20 to 400 mesh linings also available. 

The basket or screen is essential for the proper function of every Eaton Strainer. The strainer basket is designed to be both effective and durable and can be supplied in either standard and heavy-duty designs.  Eaton strainer baskets are available in two standard materials: Type 316 Stainless Steel and Monel. The materials provided cover nearly all corrosive resistance levels required.  A wide range of perforations and mesh provides removal of solids from 1/2" down to 40 micron. Custom fabrication for basket perforations is available.  Basket Construction Each style of strainer basket includes a perforated sheet that is induction welded to a rigid top ring and solid bottom cap. A handle is then welded to the inner diameter of the top ring to facilitate easy removal. Heavy duty baskets have reinforced strips welded along the seam.  Screen Construction Y strainer screens are rolled to for a perfect cylinder. The seam is induction welded. The screen seats are machined to specific dimensions and both the outer diameter and length of these screens are evaluated for tolerance.  Perforated Sheet - Specification All Eaton baskets are made of perforated sheet. The percentage of open area of a screen generally dictates the internal pressure drop that will be experienced. When selecting perforation size, it is best to balance the open area with hole arrangement and sheet thickness. The baskets are made using perforated sheets with round holes as this provides greater inherent strength and resistance to stress cracking. Open Area Perforated sheet can have an open area from 15% to 75%. In general, the larger the open area of perforated sheet, the thinner the sheet thickness must be. As holes are punched closer together to increase the perforated open area, the solid portion between holes distorts and becomes weak. Table A on page 27 describes the sheet thickness which is used to construct baskets and screens. Hole Arrangement Holes can be punched in a straight line or in a staggered pattern. Eaton baskets and screens have a staggered pattern which increases the open area, provides extra strength, and creates less pressure drop. Perforations Eaton baskets and screens are available in 1/32", 3/64", 1/16", 1/8", 5/32", 1/4", 3/8" and 1/2" perforations and in mesh sizes: 20, 40, 60, 80, 100, 200 and 325. However, over many years we have found that for general service there is one perforation for each size and type of strainer which is most popular. This is called the standard perforation and is the size furnished with the strainer unless another perforation is specified. Wire Mesh Specifications All Eaton strainers are available with woven wire mesh screens. Wire mesh provides smaller openings than can be obtained by perforating for very fine straining applications down to 40 micron. Eaton baskets and screens are made using monofilament mesh having equal wire size and wire count in both directions to produce square openings. Other types of mesh such as Dutch (or Hollander) are also available. Dutch weave has a greater quantity of wires in one direction and fewer wires of a larger diameter in the other direction. This creates a rectangular opening. As with perforated sheet, the best wire mesh selection is a balance of open area, wire diameter and type of weave.

Y Strainers are used in a wide variety of liquid and gas straining applications to protect downstream process system components in many industrial applications. Water handling applications—where it’s important to protect equipment that could be damaged or clogged by unwanted sand, gravel or other debris—commonly use Y strainers. They are also used in gaseous services such as steam, air, nitrogen, or natural gas. The strainers work really well for gaseous applications because the solids are usually small and clean out is not frequently required. The compact, cylindrical shape of the Y strainer is very strong and can readily accommodate the high pressures that are common in this type of service. Pressures up to 6,000 psi are not unusual. When steam is being handled, high temperature can be an additional complicating factor. A steam pressure of 1,500 psi will often be found at temperatures of 1,000°F. For cost effective straining solutions, Y strainers work well in a multitude of applications. When the amount of material to be removed from the flow is relatively small—resulting in long intervals between screen cleanings—the strainer screen is manually cleaned by shutting down the line and removing the strainer cap. For applications with heavier dirt loading, Y strainers can be fit with a "blow off" connection that permits the screen to be cleaned without removing it from the strainer body. Eaton Model 85 Heavy-Duty Y Strainer ¼” to 10”  Carbon Steel and Stainless Steel  Threaded, Flanged and Socket Weld Connections Eaton Model 85 Y Strainers are heavy duty filters— engineered to withstand even the most aggressive of industrial and commercial applications year after year. When you consider the critical operational parameters often associated with Y strainers used in steam and gas applications, it’s important to consider the quality of the vessel since it’s subjected to extremely high temperatures and high pressures. The wall thickness can be analyzed and evaluated by different applicable standards. Every rugged Eaton Model 85 Y Strainer is designed to stand up the most demanding real world applications. Eaton heavy duty Model 85 Y Strainers are furnished with high quality stainless steel screens that are carefully fabricated to fit the strainer body perfectly. This, coupled with the precision machined screen seat on the body of the strainer, protects against any bypass. Eaton Model 85 Heavy Duty Y Strainers are available in carbon steel or stainless steel for pipeline sizes from 1/4" to 10", with threaded, flanged, or socket weld connections. Features: Heavy Duty Construction  Compact Design  Bolted or Threaded Covers  Standard Stainless Steel Screens Available options: Perforated Stainless Steel Screens - 1/32" to 1/2", 20, 40, 60, 80, 100, 150, 200, 325 and 400 Mesh Stainless Steel Screens, Monel Screens.