For more than 40 years, O'Keefe Controls Co. has been designing and manufacturing highly accurate, reliable and repeatable precision orifices and fluid control devices for a wide variety of industries. The company is recognized worldwide as a leader in both standard and customized solutions where applications demand well-defined fluid flow and level monitoring characteristics. Our products include precision orifices, check valves, fixed flow controls, miniature in-line screens and breathers, miniature stainless steel fittings and bulkhead connectors, restriction orifice unions, fixed flow rate orifices, and pneumatic level sensors. O'Keefe Controls is ISO 9001:2015 certified and employs the principles of Lean Manufacturing in its quality system. The company is highly regarded for its advanced engineering and technical consultative expertise; all of which is based in our Monroe, CT headquarters and fabrication center.