Our cast carbon steel Y strainers are available for ¼" to 24" pipeline sizes. Titan offers the broadest cast carbon steel Y strainer product line, offering sizes larger than Keckley's maximum 14" and pressure classes higher than Eaton's 300# and Keckley's 1500# designs.
How to select which brand to use? To start, you can narrow down your options by pressure class and connection type. Eaton's highest flanged pressure class is 300# and threaded/socket class is 600#; so if you need something higher than that, its down to Keckley or Titan.
Flow Coefficient Value (Cv)
Comparing the Cv value amongst strainers is a performance-based comparison linked to the differential pressure drop across the strainer body; the higher the Cv value, the lower the differential pressure for a given flow rate. The difference in performance is approximately the difference in the Cv value, thus if "strainer A" has a Cv value double that of "strainer B", the differential pressure would be about half as much.
The importance of the Cv figure depends upon your application and how sensitive it is to differential pressure. When Y strainers are installed on the suction size of centrifugal pump systems, it might be quite critical. The takeaway point is that it is incorrect to assume that Y strainers having the same connection size will perform the same.
Here's an example: Eaton's model 85, Keckley's model SA7 and Titan's YS61 are all available with 2½" 150# ANSI flanged connections, yet their Cv values are all different:
|2½" 150# flanged Y strainers||Eaton||Keckley||Titan|
|Model 85||Model SA7||YS61|
|Max. Flow with 2ΔPSIG:||148 GPM||138 GPM||155 GPM|
|ΔPSIG with 100 GPM flow rate:||0.9||1.0||0.8|
In the example above the least expensive strainer also happens to have the highest Cv, but that is not always the case. When it comes to the class 150# & 300# ANSI flanged Y strainers Titan's Cv figures are higher across-the-board, so we would tend to suggest their model. If your flow rate isn't pushing their limits, those differences in differential pressure are not too significant. Keckley's ¾" and 1" sizes have a Cv figure DOUBLE Eaton's and about 30% higher than Titan's.
We encourage our customers to complete our online Y strainer inquiry form, as this is what we are doing behind the scenes; we select the best performing model based upon the design criteria that you provide. We can compare pricing and lead time for all applicable models if the performance aspect is not critical. Response times are typically within the hour, although you can call us and we'll review your application, look-up inventory and provide pricing immediately.
If you prefer to perform your own calculations, use the following formula to compare the initial clean differential pressure of strainer models using their Cv values:
(Q = Flow rate in GPM, ΔP = calculated differential pressure)
To compare the maximum flow rate (capacity) between strainer models use the following formula:
(ΔP = your maximum acceptable clean differential pressure; industry standard = 2 PSIG)
Y strainers are designed to protect equipment downstream from particulate. The distinction is that the larger open area ratio of basket strainers are designed for continuous removal of particulate. Please refer to our article SIMPLEX STRAINERS: Differences between Y and Basket Style Strainers for additional information.
|Catalog Pages with IOM and Outline Drawings|
|Eaton Y strainers|
|Keckley Y Strainers|
|Titan Y Strainers|