Nowata Filtration and ProGuard Filtration Systems are the two operating divisions of NMW, Inc.

In business since 1907, NMW is a leading supplier of filtration systems for a wide range of applications around the world. We manufacture high and low pressure filter vessels, ASME Code filter housings, as well as non-code housings with extensive expertise in highly engineered and custom designed vessels in a variety of materials. 

We serve not only the oil & gas production market but provide general industrial, chemical, and petrochemical filter solutions. A full line of catalog items offer customers a readily available inventory of standard items. Additionally, NMW Inc. provides a broad selection of permanent and disposable cartridge and bag filter media for liquid and gas filtration.