Y strainers are designed for protecting equipment
downstream from particulate generated from an upset
condition or circumstance where the particulate
concentration is very low because the straining
ratio is only 2:1. We've written an article
explaining the key
differences between Y and simplex (basket) style
strainers which will describe the design
limitations of Y strainers in more detail.
Our Y strainers are available in PVC, CPVC, PVDF and Clear PVC materials and can be installed horizontally or vertically if the flow is downwards. The hex chamber cap is easily removed to access the screen for cleaning or replacement.
In addition to the traditional one-piece Y strainer, they are also available with a true-union connection design. The true-union design simplifies installation as well as enabling strainer replacement without cutting and replacing piping; perhaps especially useful for socket glued piping connections. We have a webpage which describes true-union connections.
The only elastomers used are captured o-rings for the screen sealing and, for the true-union design, the true-union connectors. The o-ring materials are either EPDM or FKM..
The standard strainer screen has 1/32" perforations and is made from the same material as the strainer body. Additional perforations are available and may be substituted for no additional cost. It is also possible to order stainless steel perforated and mesh lined screens for an additional cost.
One frequently asked question is: Are the strainers schedule 40 or 80? The answer is "neither" because that terminology is used to describe the uniform wall thickness of piping and since these are molded products having varying wall thicknesses, they cannot have a specific "schedule" assigned to them. What you need to refer to is the rated pressure by temperature chart to make sure that your application falls within the limits of the strainer material chosen. Each Y strainer page has links to the catalog pages and the pressure/temperature chart.
Other significant aspects to consider include:
Never use plastic strainers for compressible fluids such as air or nitrogen
The maximum fluid velocity should not exceed 5-8 FPS and our sizing calculators use 5 FPS as the design standard
It's critical to review your pressure limitations for your fluid temperature and reduce potential Water Hammer situation accordingly
Y strainers are used for liquids or environments that are
aggressive to alloy strainers and are designed to be
installed within non-alloy piping systems. If you intend to
install a plastic strainer within an alloy piping system it
is recommended that you install at least 10 pipe diameters
of plastic piping upstream and downstream of the strainer to
help account for differences in thermal expansion rates of
metal and plastic, transmittal of pipe vibration and loading
forces. Connecting plastic strainers directly with
metal piping can potentially damage the strainer.
When in-doubt, simply call us or better yet, fill-out our application based inquiry form and we'll assist you with the proper selection.