Frequently Asked Questions

PP melt blown filter cartridges are used for deep filtration in water treatment, chemical processing, food and beverage, and pharmaceutical industries. The gradient density structure provides high dirt holding capacity for pre-filtration and RO system protection.

Melt blown filters use polypropylene microfibers with gradient pore structure for higher dirt holding capacity. Wound string filters use yarn wound on a core for consistent depth filtration. Melt blown is better for fine filtration (1-50 micron), while wound string excels in high-sediment applications.

Replace every 3 to 6 months depending on water quality and usage. High sediment or chlorine levels may require more frequent changes. Monitor pressure drop across the filter -- when it increases by 10-15 PSI above initial readings, it is time for replacement.

For pre-filtration, 20 to 50 microns removes large particles like sand and rust. For fine filtration, 1 to 5 microns removes silt and fine sediment. A common multi-stage approach uses 20 micron pre-filter followed by 5 micron fine filter.

Yes, our carbon block filters are made from coconut shell activated carbon and meet NSF/ANSI standards for taste, odor, and chlorine reduction. They effectively reduce chlorine by more than 97% and VOCs by more than 95% at rated flow rates.

Our TFC polyamide RO membranes offer 99.5 percent salt rejection rate for brackish water and tap water desalination. The rejection rate may vary depending on feed water temperature, pressure, and TDS levels. Minimum guaranteed rejection is 99.0 percent.

The 4040 is a 4-inch by 40-inch membrane with 200 to 300 GPD output for commercial systems. The 8040 is an 8-inch by 40-inch membrane with 1 to 1.5 m3/h for industrial systems. The 8040 has approximately 4 times the active membrane area of the 4040, making it suitable for large-scale applications.

Big Blue filter housings are used for high-flow commercial and industrial filtration, available in polypropylene and stainless steel for sediment removal and pre-filtration. They accept 20-inch by 4.5-inch jumbo cartridges and are commonly used in restaurants, schools, factories, and municipal water systems.

Yes, carbon block filters effectively reduce chlorine, taste, and odor in well water. For heavy sediment, use a sediment pre-filter (PP melt blown or wound string) before the carbon block to extend its service life and prevent clogging.

We offer standard 10, 20, 30, and 40 inch lengths in slim (2.5 inch) and Big Blue (4.5 inch) diameters. Custom lengths are available for OEM orders. All sizes can be produced with various end cap configurations (DOE, SOE-222, SOE-226).

Yes, we can customize cartridge lengths, end cap types, and media specifications for OEM and bulk orders. Minimum order quantities apply for custom specifications. Contact our sales team with your requirements for a detailed quotation.

Our standard filter housings are rated up to 125 PSI. Stainless steel housings are available for higher pressure requirements up to 200 PSI. Always check the pressure rating against your system specifications to ensure safe operation.