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LH vs. LW pressure UF: what buyers should compare
Compare membrane material, application limits and rack conditions for pressure ultrafiltration.
HOSON WATER editorial ·
Compare more than nominal pore size
HOSON identifies the LH series as a PVC-alloy pressure UF family with a nominal pore size of 0.01 µm and the LW PVDF family at 0.02 µm. Use these values to distinguish product families. Select the configuration based on feed chemistry, temperature, pretreatment and operating strategy. Ask which exact module and material variant a quotation assumes and request its latest specifications.
Check the plant duty for the quoted module
Supply feed-water analyses and a seasonal temperature range. Include any oxidant or cleaning exposure and identify what enters the UF after pretreatment. The pressure rating, design flux, backwash conditions and permeability change across operating scenarios. Compare proposed module counts and net output using the same feed and design basis.
Review the rack interfaces
Confirm module dimensions, port configuration, permissible orientations and how the owner will isolate and inspect each train. Where downstream RO is included, specify the feed-water quality it needs and the sampling point for verification. Use representative pilot data where raw-water variability or fouling uncertainty affects equipment sizing.