OEM Y Strainer Manufacturer & Exporter

Yes, but with critical orientation requirements. In horizontal piping, the Y-strainer screen branch must always point downward (the "6 o'clock" position). This ensures that trapped particulate matter settles into the lower pocket by gravity and is not swept back into the main pipeline stream during low-velocity periods. In vertical piping, Y-strainers can only be installed where flow is vertically downward. If fluid flows vertically upward, filtered solids will naturally fall back down the pipe toward the source rather than accumulating safely in the screen collection pocket.

"Mesh" refers to the number of openings per linear inch of screen material. As the mesh number increases, the size of each opening decreases. For example: 20 mesh corresponds to an opening size of approximately 840 microns (0.033 inches); 40 mesh equals 420 microns; 100 mesh equals 149 microns; 200 mesh equals 74 microns; and 400 mesh equals roughly 37 microns. For apertures larger than 10 mesh (approximately 2000 microns / 2mm), strainers are typically specified directly by the millimeter diameter of the perforated plate holes rather than mesh count.

Screen collapse occurs when the differential pressure across the screen ($\Delta P$) exceeds the mechanical yield or buckling strength of the filter element. This is usually caused by excessive sediment accumulation coupled with high system flow rates, or sudden pressure surges such as water hammer. To prevent collapse, our screens are engineered to withstand differential pressures equal to the full rating of the valve body, or are protected by heavy-gauge stainless-steel perforated backing cylinders that support fine-mesh wire cloths against bursting forces.

Under normal continuous operating conditions, clean differential pressure across a newly installed Y-strainer ranges between 0.05 bar and 0.15 bar (0.7 to 2.2 psi). A strainer basket should undergo blow-down purging or manual mechanical cleaning when differential pressure reaches 0.5 bar to 0.7 bar (7.2 to 10 psi). Allowing $\Delta P$ to exceed 1.0 bar (14.5 psi) risks severe structural deformation of the internal basket, cavitation in downstream booster pumps, and a rapid drop in overall plant efficiency.

Y-strainers feature a compact, angular design capable of handling high working pressures (up to Class 2500 / PN420) and are suitable for gas, steam, and liquid applications. Their sediment-holding capacity is relatively modest, making them ideal for systems with low to moderate debris concentrations. In contrast, basket (or simplex/duplex bucket) strainers feature an upright, cylindrical vessel positioned perpendicular to the pipeline with a significantly larger debris-holding reservoir. However, basket strainers have larger physical footprints, higher initial costs, and are limited almost exclusively to liquid services under moderate pressure conditions.

As an integrated OEM manufacturer, we support bespoke engineering modifications, including custom face-to-face dimensions (DIN 3202-F1, ASME B16.10, BS 2080), dual-flange drillings (e.g., universal flanges mating both PN16 and ANSI 150), custom differential pressure tapping ports, magnetic core inserts for capturing fine ferric iron dust, and specialized internal linings such as hard rubber, PTFE, or ceramic coatings for handling aggressive chemical slurries.

The blow-off valve should typically be sized between 1/2" and 2" depending on the nominal size of the main strainer. For example, strainers from DN15 to DN50 typically use a 1/2" NPT/BSPT blow-off connection; DN65 to DN150 utilize a 1" connection; and DN200 to DN400 utilize a 1-1/2" or 2" flanged or threaded valve. Quarter-turn full-bore ball valves are strongly recommended because they open rapidly, generating a sudden localized fluid rush that dislodges stubborn particulate matter from the basket surface.

For high-temperature steam service (temperatures exceeding 200°C), conventional compressed synthetic fiber gaskets tend to harden, embrittle, and creep over time, leading to bonnet leaks. We exclusively recommend spiral-wound stainless steel 316 gaskets with flexible exfoliated graphite fillers, fitted with an inner steel centering ring. This configuration offers superior elastic recovery under severe thermal expansion and contraction cycles, maintaining zero fugitive emissions throughout years of continuous thermal cycling.