【Useful Information】What are valves and fittings?

It is a valve with excellent "air tightness" and "maintainability."

A diaphragm valve that controls fluid by lifting the diaphragm at the drive part or pressing it against the valve seat, features excellent sealing properties due to the elasticity of the diaphragm. Additionally, it has no pockets in the fluid passage and is streamlined, allowing for easy maintenance by simply removing the bolts and nuts that secure the body and drive part to replace the diaphragm. This diaphragm valve is widely used in various fields requiring sanitary conditions, such as pharmaceuticals, food, and chemicals.

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It is a valve that is widely used for adjusting the "flow."

A needle valve is a type of globe valve that excels in shut-off performance and ease of flow adjustment by pressing the valve body against the valve seat to control the flow. It is designed with a needle-shaped valve body to allow for precise flow adjustments. Needle valves, which are specialized for flow regulation, are used in applications across various industries to control "flow."

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It is a valve that plays a wide-ranging role in fields that must not leak.

This is a so-called packless type valve that uses a metal bellows for the external seal, which completely prevents fluid leakage by using a bellows, diaphragm, or other methods instead of a gland packing. It is suitable for hazardous, flammable gases, vapors, heat transfer fluids, and vacuum lines. The bellows valve, applicable from high pressure to vacuum and high temperature to ultra-low temperature, is used in a wide range of "leak-free areas" such as nuclear power, thermal power, semiconductors, chemicals, and vacuum applications.

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This valve is ideal for use with high-purity fluids in high airtightness and high durability applications.

This is a so-called packless valve that uses a metal diaphragm for the external seal (a sealing method in the gland section that completely prevents fluid leakage by using a bellows or diaphragm instead of a gland packing or other methods). In addition to the high airtightness characteristic of conventional packless valves, it also offers high durability and is free of dead space, making it an ideal valve for use with high-purity fluids.

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It is a valve with low fluid resistance and excellent operability.

A valve that controls fluid by rotating a spherical, hemispherical, or cylindrical valve body, allowing for full bore capability with a flow path that matches the inner diameter of the piping. Additionally, there are no obstacles in the fluid within the valve diameter, making it less likely for vortices or pulsations to occur, resulting in excellent flow characteristics. The simple structure and superior operability of ball valves make them widely used in various fields and applications.

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Thank you very much for your continued support. We, at Marpos Co., Ltd., regret to inform you that we will be closed during the following period. Closure Period: From Saturday, April 25, 2026, to Wednesday, May 6, 2025. Inquiries received during the closure period will be answered sequentially after Thursday, May 7. We apologize for any inconvenience this may cause and appreciate your understanding.

We would like to inform you about the business hours during the GW period, as well as order, shipping, and support services. Please download the PDF to check the schedule. ■ Regarding Orders 1) Orders can be placed at any time on the 【FOSS WEBSHOP】. Stock will be prioritized. 2) Please specify your "desired delivery date" when placing an order. 3) Due to expected high order volume and shipping delays before and after the holiday, please make your requests with ample time. ■ Regarding Customer Support For any malfunctions or issues during the holiday... Customers with maintenance contracts should contact the dedicated number for after-hours support. Other customers can reach us via email. Please provide details such as "model name," "serial number," "symptoms," and "contact person's name." Our customer support will contact you in the order of receipt. E-Mail: service@foss.co.jp

The "Mechanical Stitching Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed, and repairs are made without causing any thermal impact on the base material. Repairs can be carried out in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.

The "Mechanical Stitch Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed, and repairs are made without causing any thermal impact to the base material. Repairs can be carried out in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.

SPACECOOL Inc., which researches, develops, and sells the radiation cooling material "SPACECOOL" that releases heat into space to achieve zero-energy cooling, will exhibit at the "Jumbo Surprise Exhibition," a comprehensive trade fair for electrical materials and housing equipment, held at Tokyo Big Sight from April 17 (Friday) to April 18 (Saturday), 2026, and at Intex Osaka from April 24 (Friday) to April 25 (Saturday), 2026. This material is a new technology that enables zero-energy cooling by converting heat into infrared radiation and releasing it into space, without using any external power. By implementing it in outdoor air conditioning units and outdoor electrical equipment, it helps suppress internal temperature rises, contributing to stable operation of devices and reduction of air conditioning energy consumption, and is being recognized as a new carbon-neutral technology. Its energy-saving performance has been acknowledged, and this material received the 2025 Energy Conservation Award. When you visit the venue, please stop by our booth. Our booth number is 972 (common for both Tokyo and Osaka). We will continue to work towards expanding the social implementation of SPACECOOL to contribute to the stable operation of outdoor equipment and air conditioning units, as well as to reduce air conditioning energy consumption and CO2 emissions.