JUPITOR CORPORATION Product Lineup

Pressure relief valves are critical components of aircraft fuel, hydraulic, and pneumatic systems. These valves assist with one of three functions: safety relief, pressure regulation, and protection against thermal expansion. Lee PRI is specifically designed for these functions and helps ensure the safety and reliability of aircraft. Like other products from The Lee Company, Lee PRI is compact and lightweight, with sufficient durability to be used throughout the 30-year lifespan of an aircraft without replacement. These products are available in various sizes and are designed to withstand a range of pressure levels. In addition to sizes ranging from 0.187 inches in diameter to a maximum of 0.812 inches, threaded removable products are also available. Custom options with selectable flow/opening pressure/closing pressure and zero-leak models are also available. If you would like to learn about the configuration of relief valves, important performance characteristics, design challenges and trade-offs, and common failure modes from an unbiased perspective, please refer to our eBook, "Engineer's Guide to Selecting Pressure Relief Valves."

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Safety screen filters are critical components in hydraulic, fuel, lubrication, or pneumatic systems within the aerospace and defense industries. While the filters maintain fluid cleanliness, sudden failures can occur due to improper contaminants or debris that remain in the system during production or are generated during operation. We offer a wide variety of standard designs across various sizes, materials, mounting methods, filtration ratings, and even technologies. In fact, our Hi-Bar-Screen is the first invention of laser-drilled screen technology that provides the industry with a robust, cost-effective design capable of withstanding burst pressures of up to 7500 psid. More than 50% of the filters we manufacture are custom-made, far exceeding our standard product line. This includes, for example, drill hole sizes ranging from 25 microns to 1500 microns, a diverse range of materials, higher burst pressures, or unique envelopes optimized for lower resistance, custom mounting, or integrated bypass mechanisms.

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The Lee Company's high-precision flow restrictors have become the industry standard for manufacturers worldwide. Lee's excellent flow limiting devices are used in critical applications throughout aircraft (see examples of achievements at the bottom of this page). Lee offers both "single orifice restrictors" and "multi orifice restrictors" to meet the needs of various applications. The multi-orifice configuration improves resistance to contamination and reduces the likelihood of cavitation. Lee Jets, Bender Jets, and Visco Jets are all 100% tested for bidirectional flow with strict tolerances and come with protective screens against debris and contamination. All of these are made of stainless steel, capable of withstanding high operating pressures, and utilize Lee's expanded control technology lock ends for ease of installation and retention. All products are designed to be extremely lightweight while providing strength far beyond their size. They are guaranteed to deliver excellent performance in any environment.

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The Lee Solenoid Valve combines space and weight reduction with excellent performance and reliability for demanding applications such as hydraulic, fuel, and pneumatic systems in aerospace. Its innovative design and advanced technology have set new standards for space, weight savings, and power consumption. The weight of the lightest version is less than 0.14 pounds (64g), and it consumes only 7.8 watts at DC 28 V. Each subcomponent and manufacturing process is optimized to create a proven low-leak valve design with the highest performance, longest lifespan, and best reliability. By eliminating traditional O-rings and using the unique polyamide-imide Lee MultiSeal, these space and power savings and simplified port layouts have been achieved. A video showcasing part of the manufacturing process is available.

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In aircraft fuel, hydraulic, and pneumatic systems, it is necessary to accurately control the flow and pressure conditions. Lee offers a variety of valves with additional features for applications where basic flow restriction devices are insufficient. In addition to their primary use in aerospace, they are also used in numerous defense applications such as missiles, tanks, submarines, and frigates. Due to the significant differences in functionality when combined, flow measurement valves are an interesting category. Restrictor Check: It integrates a check valve and an orifice in series into one component. It allows a metered flow in one direction while preventing flow in the opposite direction. Directional Flow Controls: It has the functionality of a check valve and an orifice in parallel, allowing free flow in one direction and restricted flow through the orifice in the opposite direction. It provides different metered flow rates in each direction. Flosert: Compact and lightweight, it incorporates both fixed and variable metering orifices to provide a constant flow rate across a wide differential pressure range. By combining the functions of two components into one package, it can offer superior performance compared to the sum of the individual components.

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Aircraft are designed with redundancy in mind. In cases where redundancy is not practical, such as with landing gear and brakes, a 3-port shuttle valve can provide backup control for a single system. The Lee Shuttle Valve is designed to be integrated into landing gear and brake systems as a method to switch between the main control line and the emergency control line as needed. The Lee Shuttle Valve is available in various sizes/configurations to meet the needs of any application. Since shuttle valves typically operate during emergencies, reliability over the aircraft's lifespan is crucial. Therefore, it is designed to last throughout the aircraft's 30-year lifespan by utilizing a robust stainless steel construction. Each component is also designed to be compact, lightweight, and easy to install. The Lee Shuttle Valve incorporates a unique nose seal design that eliminates bypass leakage and the need for additional O-rings. Options include spring-biased, return-stop shuttle valves, reverse shuttle valves, or zero-leak models.

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When developing electric vehicle (EV) systems, designers or OEM manufacturers must decide whether to "design and manufacture the necessary components in-house or purchase them directly from external suppliers." To make the appropriate selection of each component within the system, various factors must be considered beyond the initial purchase price, including total installation costs, design capabilities, manufacturing capabilities, supply chain constraints, and quality standards. This article examines the pros and cons of in-house production versus purchased components and provides insights to help you make the most suitable decision for your EV needs. Table of Contents Factor 1: Total Installation Costs Factor 2: Design Capabilities Factor 3: Manufacturing Capabilities Factor 4: Supply Chain Constraints Factor 5: Quality Standards How Can The Lee Company Help? You can find more detailed information at the following link: "Should You Make or Buy Your EV Components?"

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- Uses Lee products' check valves, which have a rich track record in space from the Apollo program to the present. - Compact and lightweight. - Redundant sealing function. - Fitting structure made of stainless steel or titanium. - Seal options of Metal to Metal, elastomer, or polymer. - Compatible with all types of storable gases and propellants. - Adjustable to fit mounting interfaces and tube sizes. - Forms an extremely strong seal with fitting caps and gaskets, with a leak rate of less than 1.0 x 10^-7 SCCS. - Fully customizable to suit applications. Separate pilot tool for weight reduction. - Weighs only 38 grams (55 grams with cap and gasket attached). - With cap and gasket attached, helium leakage is less than 10^-7 SCC at 4000 psid. - Various materials are available for fluid compatibility. - Custom interfaces are available. - Built to aerospace quality standards AS9100.

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