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Information on products and solutions used in large-scale manufacturing of fluids, gases, and powders.

Solenoids, Relays, Valves, and Custom Assemblies

Product Announcement from Deltrol Controls/Division of Deltrol Corp.

Solenoids, Relays, Valves, and Custom Assemblies -Image

Deltrol Controls is located in Milwaukee, Wisconsin, and is a wholly-owned subsidiary of Deltrol Corp. For over 45 years, we have designed and manufactured solenoids, relays, valves, and custom assemblies for a variety of applications. Our Milwaukee operation employs approximately 110 people, working out of a 110,000 square foot manufacturing facility. We also have manufacturing capabilities in other parts of the world that allow us to be a globally competitive supplier.

Our Products

Deltrol Controls offers one of the most extensive standard product lines of solenoids, relays, and dispensing valves in the world. They are used in a variety of applications including HVAC, vending equipment, security systems, engine controls, office equipment, and many more. We pioneered the encapsulated coil and are proud to offer it on most of our products. We have extensive experience in customizing standard products, as well as designing new products specific to an application.


Our highly-trained engineers each have an average of over 20 years experience designing electro-mechanical products. They will work with you to understand your requirements and help determine the most innovative, cost-effective solution available. They utilize the latest in finite element analysis and 3D CAD technology to help in the design process. Visit the custom assembly section of our web site to learn about some of the applications we have recently worked on for other customers.


Deltrol Controls achieved ISO 9001:2008 certification in 2010. Click here to download our ISO 9001:2008 certificate. Our robust design verification and production quality processes insure that products are designed and manufactured to our customers' expectations. Many of the products we produce are 100% tested with automated, computer-driven test systems.


Our ERP based manufacturing system provides us with the flexibility to meet our customers' delivery system requirements. We are experienced in working with various customer implementations of pull order systems. We have the flexibility to integrate packaging and delivery to our customers' requirements.

Moving Forward

Deltrol Controls is effectively adapting to the changing landscape of world-wide competition, while maintaining our proud history of providing superior customer service and technical support. We are committed to continually improving our operations to provide better products at globally competitive prices as the world continues to evolve.

Deltrol Fluid Products

Our sister division, Deltrol Fluid Products, located in Bellwood, IL, designs and manufacturers world-class cartridge valves, custom manifold systems, and in-line valves for a variety of hydraulic and pneumatic applications.

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