Delta Pure Filtration is an USA manufacturer of filter cartridges for the removal of particles and impurities from water and ... various fluids. Products include string wound, carbon/resin, pleated and melt blown filters, filter housings and filter systems. Our polypropylene string wound, melt blown and Fusion filters are NSF 61 approved. Products are used in variety of customer applications from drinking water to corrosive chemicals. Customers include chemical/plastic processors, food and beverage, oil and gas, plating and water purification companies. read more