Titan BS87 simplex basket strainers are available in 1" to 16" sizes and with a bolted or swing-bolt "quick-opening" cover. The o-ring seal between the basket support ring and strainer body reduce potential of particulate bypass for finer filtration applications.
Titan BS-87 Features
Titan BS-87 Options
Titan and Eaton provide a "dual annulis" strainer body design to reduce the pressure loss across the strainer as compared to over-the-top and side entry designs. A slanted or angular basket promotes a laminar flow and minimal pressure drop, however the basket design reduces the total surface area available for filtration and this results in increased frequency of basket cleaning or requiring a larger strainer body to provide an equivalent level of gross surface area provided by an "over-the-top" style basket.
An over-the-top style basket maximizes gross filtration area available, however it requires a slightly larger body size than a strainer using an angular style basket. Keckley SGFV style strainers have an angular style basket and although they are often less expensive for a given strainer size, due to their angular basket design you would expect to clean their baskets more frequently. Both "over-the-top" and angular simplex strainer designs have only one annulis and its associated with the discharge nozzle.
Titan and Eaton's innovative dual annulis design uses an over-the-top style basket but improves the laminar flow aspect by effectively lowering the inlet nozzle (creating a top annulis) which enables them to reduce the bottom annulis associated with the outlet nozzle. The result is the fluid doesn't need to travel vertically upwards as much to exit the strainer, reducing its flow resistance.
Few people really delve into the strainer body design this much and the marketing material can be deceptive. The best way to compare the flow efficiency of different strainer designs is to compare their flow coefficient (Cv) values.
While comparing pricing and lead time is typically how many customers decide which strainer to order, the flow coefficient (Cv) values should be considered from a performance perspective, after all there are costs associated with increased basket changes (labor, downtime and exposure to fluid) and reduction of flow (pump cavitation, reduced spray nozzle patterns). Basket strainers which have a higher Cv (flow coefficient) value have a lower differential pressure drop for a given flow rate and thus may not need to be cleaned as often. Another way of looking at Cv values is that basket strainers having higher Cv values can handle higher flow rates at a given pressure.
As you can see from the chart below, the Cv values are so close within the 1" to 6" sizes for these manufacturers that they will perform the same, thus ergonomics, cost and lead time should be the deciding factors. The 10" - 16" sizes favor Keckley from a lower initial pressure drop perspective. All can be supplied with a tool-less quick opening style closure (clamp, swing bolt or knob).
If your flow rate is relatively low for your pipeline size then the Cv value will not matter as much, we wrote an article "Effects of Fluid Velocity and Differential Pressure when Selecting Pipeline Strainers" describing our web-based sizing tools which contribute to selecting the best performing design for your specific application.