Donaldson Co.

Tetratex membrane
Offered as a cost-effective alternative to membranes on all-PTFE needlefelts, Tetratex membrane is an all-PTFE woven filtration medium available in roll format for bag manufacturers. Available in two configurations, the membrane accommodates the most demanding baghouse applications, such as air-pollution control and product recovery. Tetratex 7008 is tailored for applications where contamination of the product in contact with the medium may occur, while Tetratex 7012 is designed for hot-gas filtration applications where extreme chemical conditions are present.

Modular Filter
 Introduced as a cost-effective, bolt-on replacement for medium-flow filters, this modular filter boasts a flexible design that meets a variety of cost needs and performance specifications. A single-base head assembly is mated with the modular components, including a water sensor, electrical heater, visual water bowl, manual priming pump and life indicator (electronic or visual). Additionally, the filter can be used with the company’s Twist & Drain valve, interchangeably between the clear plastic bowl and the spin-on, to reduce maintenance costs. The mix-and-match components of this product allow customers to easily build individualized filters. Modular fuel products are able to utilize different fuel-media technologies, depending on customer requirements. For example, the filter can use traditional silicone treated cellulose or synthetic media, featuring Synteq, one of the firm’s newest filter media technologies, which removes contaminants and emulsified water from the fuel stream.

Ultra-Web SB
Ultra-Web SB is a new, tougher filter media for dust collection in chemical, pharmaceutical, cosmetic, textile, grain, woodworking, metalworking and many other manufacturing processes that face challenges from agglomerative dust. The design of the filter cartridges combines the excellent surface-loading and dust release capabilities of Ultra-Web nanofibers with a strong spunbond polyester substrate. This creates filter cartridges with long life, high efficiency and a significantly lower pressure drop for energy-efficient operation compared to spunbond or meltblown media. These cartridges feature wide-pleat spacing, which permits thorough pulse cleaning of fine and fibrous particulate, including ceramics, cotton, fiberglass and grains. Since the spunbond substrate is made without resins, Ultra-Web SB cartridges can be used where challenging conditions, such as higher temperature, chemicals and/or moisture, could weaken or destroy the resin system within standard substrate media.