We have launched a special page for CPC quick couplings.

CPC couplings are top-class couplings for plastic tubes with over 30 years of history.

CPC couplings are products that excel in both functionality and design, featuring a precision hose barb integrated with the main body, a shut-off valve that blocks the flow path when disconnected, and a push-button thumb latch that allows for quick connection and disconnection. The unique thumb latch mechanism from CPC enables speedy and reliable operation without requiring specific skills from the operator. Additionally, the ability to freely choose whether or not to include a valve that blocks the flow path during disconnection makes it ideal for applications where liquid spillage is undesirable. The wide range of sizes, designs, and selectable materials has garnered strong support across various fields, including medical and beverage industries.

• Pipe Fittings

A next-generation coupling that uses polyphenylsulfone (PPSU) resin as the main material, allowing for use with fluids up to 115°C.

The "PLQ2 series" is the latest model that incorporates advanced valve technology with non-spill technology, which minimizes liquid dripping (spillage) during coupling disengagement and air ingress during connection to the utmost limit. It uses PPSU (polyphenylsulfone), a material known for its excellent heat and chemical resistance. The body features a well-established thumb latch (button type) that allows for one-handed operation, enabling easy and speedy handling.

• joint

The world's smallest plastic coupling compatible with a tube inner diameter of 3.2mm.

"CPC Couplings," a top brand for fluid piping couplings. The SNS1 series is categorized as "Micro Fittings," specifically designed for extremely thin tubes. Despite being the smallest size in the world for plastic couplings, it features the unique thumb latch mechanism that is synonymous with CPC Couplings, allowing for intuitive attachment and detachment. Its non-spill design prevents liquid drips and air contamination, making it ideal for handling high-purity fluids. Additionally, it helps prevent equipment failure and skin contact caused by liquid drips from chemical solutions.

• Pipe Fittings

A metal semi-large model that further evolves the non-spill technology, which minimizes liquid dripping during coupling disengagement and air intrusion during connection to the utmost limit.

The LQ6 series (for liquid cooling applications) features a sleek metal design and covers a temperature range up to 115°C, making it applicable for various liquid cooling uses, from device installation to on-site equipment. Additionally, the main unit adopts a well-established thumb latch (button type) that allows for easy and quick one-handed operation.

• Pipe Fittings

A metal medium-sized model that has further evolved the non-spill technology to minimize liquid dripping during coupling disconnection and air intrusion during connection to the utmost limit.

The LQ4 series is a drip-less style coupling that is ideal for use in liquid cooling applications that require high reliability. The newly designed valve structure minimizes spillage during coupling disconnection and ensures a smooth disconnection after long-term connection. ■ Adopts a button mechanism for intuitive operation ■ Non-spill structure that minimizes liquid dripping and air contamination ■ Button color coding for line identification is possible ■ Unique new mechanism prevents sealing part adhesion during long-term connection

• Coupling

A metal compact model that further evolves the non-spill technology, which minimizes liquid dripping during coupling disengagement and air mixing during connection to the utmost limit.

The LQ2 series is a drip-less style coupling that is ideal for use in liquid cooling applications where high reliability is required. The newly designed valve structure minimizes spillage during coupling disconnection and ensures smooth disconnection after long periods of connection. ■ Adopts a button mechanism that allows for intuitive operation ■ Non-spill structure that minimizes liquid dripping and air intrusion ■ Button color coding for line identification is possible ■ Unique new mechanism prevents sealing part sticking during long-term connection

• Coupling

A resin coupling that allows for reliable attachment and detachment of two piping systems in one action.

The DPC series is a model that allows for the quick attachment and detachment of two different medium-diameter piping systems with a single action. Its intuitive thumb latch (button-style) design and the two lines that connect instantly prevent mistakes during connection, making it suitable for any operator. Additionally, it can accommodate a built-in shut-off valve, making it easy to use for liquid applications.

• Coupling

Bottle cap for 45GL bottles equipped with standard CPC coupling.

The BQ45GL series is a bottle cap equipped with a standard connector for 45GL bottles. The coupling or fitting included with the cap allows for quick and easy tube attachment and detachment during research and experiments. Additionally, the cap features a bamboo shoot for a dip tube inside.

• Plastic utensils and containers

A medium-sized model that adopts an innovative concept that allows for detachment by pulling on the combined coupling at both ends.

The "BAC series" is a coupling manufactured by the American company CPC, designed to disconnect by pulling with a certain force without operating the thumb latch, and to connect by inserting with a consistent force. This structure makes it ideal for scenes requiring speed, such as disconnecting hydration bags in sports fields including motorsports.

• Pipe Fittings

We will be closed from December 27, 2025, to January 4, 2026. Inquiries during this period will be addressed sequentially after January 5. We apologize for the inconvenience and appreciate your understanding.

Thank you very much for your continued support. We, at Marpos Co., Ltd., will be closed during the following period: Closure Period: From Saturday, December 27, 2025, to Sunday, January 4, 2026. Inquiries received during the closure period will be answered sequentially after the start of business in the new year. We apologize for any inconvenience this may cause and appreciate your understanding. Sincerely,

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 even in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is kept to a minimum. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.

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 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.

The low-voltage fuse "SBFC-MS2" is a slow blow fuse that can withstand temporary overcurrents and only blows under continuous overcurrents. It is particularly effective for devices in automobiles where the current temporarily spikes. For example, it protects power window motors, which may blow regular fuses due to the large current that flows temporarily during startup. It is recommended for those facing circuit protection challenges in the automotive and construction machinery industries, as well as for low-voltage fuses (below DC70V).