About Us

Innovative Flow Control Products and Sealing Technologies

Who we are

Established in 1947, Circle Seal Controls offers a wide choice of valves and controls for Aerospace, Military, and Industrial Applications ranging from discrete components to integrated assemblies to complete fluid control systems.

We design and manufacture flow and sealing technologies that include a wide range of valves and pressure regulators, such as Atkomatic heavy-duty industrial solenoid valves high-precision pressure relief valves, thermal-relief valves, ball- and poppet-style check valves, high-pressure check valves, manual-shutoff valves, dome-loaded pressure regulators, and back-pressure regulators.

We are an engineering partner and a trusted advisor from design to testing to production to the aftermarket. All products are 100% tested. Test bench equipment including pneumatic, fuel hydrostatic, and hydraulic (which encompasses red oil and Skydrol) are standard at Circle Seal Controls

Commitment to Excellence

Quality counts at Circle Seal Controls-and it always has. Reliable products and responsive service that set industry standards are the cornerstones of our business. As a result, we welcome each new challenge as an opportunity to move these bench marks of excellence continually forward.

Behind every Circle Seal Controls' product is a heritage of excellence dating back to 1947 when the company was founded as James-Pond-Clark. The fledgling firm developed and marketed its first innovation-a check valve that utilized a floating O-ring to provide a dead-tight seal.

Ongoing investments in state-of-the-art equipment and skilled personnel have helped Circle Seal advance its global leadership position. Realizing that people are our greatest asset, we sponsor training and skill development programs at all levels of the organization. The result is a demonstrated ability to provide our customers with the best quality available across a full array of valves and controls.

How we do it

A Complete Selection of Quality Products

Circle Seal Controls offers a wide choice of valves and controls for applications including OEM, medical, chemical, petrochemical, energy, and food & beverage. Products range from discrete components to integrated assemblies to complete fluid control systems.

Growing With Our Customers

Circle Seal Controls designs and manufactures to customer specifications. In response to customers' ever evolving requirements, Circle Seal Controls has expanded over the years. Our 105,000 square foot facility in Corona, California is designed to meet our customers' needs and provide excellent working conditions for our employees.

Our Sales & Marketing Department is staffed with qualified, customer-oriented employees, augmented with extensive distributor/representative organizations.

Our Expertise

Proven Engineering Expertise

Circle Seal Controls' engineering department brings together a highly skilled team that expertly translates concepts into producible working designs. A well-equipped model shop provides developmental engineering hardware and is key to the evaluation of new design concepts. Our engineering test lab is capable of conducting safety qualification tests for most types of valves with equipment that ranges from high precision hydraulic, pneumatic and other media test benches to the latest computer-driven data acquisition systems.

Uniquely Qualified

Circle Seal Controls' comprehensive product line, engineering expertise, broad manufacturing capabilities, stringent quality control, and responsive customer service makes us well qualified to address your fluid control needs. In short, we welcome your challenges and we are uniquely equipped to meet them. Customers can specify our valves and controls with the confidence that they are backed by a company dedicated to complete satisfaction.

For further information on our products and capabilities, contact us today.