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Hydraulic coupling

Environmentally friendly

These series are non-spill types that comply with ISO16028 or are ISO16028 compliant, with no oil leakage during attachment and detachment, and are environmentally friendly. They adhere to a globally recognized ISO standard, making them usable overseas. In particular, the APM(M) series can be attached and detached at residual pressures up to 300 bar, with sizes ranging from 3/8 (APM9) to 1-1/2 (APM30). The thread types are BSP and NPT, with flow rates of approximately 60 to 600 L/min (at a pressure drop of 4 bar) and maximum pressures of 270 to 350 bar. The A series includes 8 types ranging from 1/8 (A4) to 1-1/2 (A30), with thread types of BSP and NPT, flow rates of approximately 9 to 900 L/min (at a pressure drop of 4 bar), and maximum pressures of 270 to 420 bar. The FIRG series has sizes ranging from 1/4 (FIRG14) to 2 (FIRG200), with thread types of BSPT, BSP, and NPT, flow rates of approximately 30 to 1500 L/min (at a pressure drop of 4 bar), and maximum pressures of 200 to 330 bar. We have BSPT connection thread types in stock. These products are used in various machines, including construction, civil engineering, agriculture, and industrial machinery.

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Flat Face Coupling "FIRG Series"

It reduces environmental impact by eliminating losses due to hydraulic oil leakage during attachment and detachment.

"FIRG" was developed in 1983 as the original flat face coupling. The development of this series was a significant reform in the market for self-sealing couplings. Widely used in hydraulic applications, the "FIRG" series has established itself as a leading model in line with the ISO16028 compatibility standard over time. Due to its high durability and various advantages, the "FIRG" series is increasingly recognized and used by hydraulic equipment manufacturers. Please use it to prevent oil leakage and contamination intrusion. 【Features】 ○ The flat face is easy to clean and effectively reduces contamination intrusion into the system. ○ There is no loss due to leakage of hydraulic oil during connection and disconnection, reducing environmental impact. ○ Air entrapment during connection and disconnection is minimized, aiding optimal system operation. ○ The design of internal components to promote laminar flow prevents turbulence and minimizes pressure loss, helping to maintain system efficiency. ○ Strong against peak pressure. For more details, please contact us or download the catalog.

  • Prime movers, torque converters, hydraulic equipment, generators
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Screw-type flat face coupling "VP-P series"

Effectively prevents detachment and hydraulic oil loss under conditions of high residual pressure.

The "VP-P" screw-type flat face coupling is a technical solution for the demands of hydraulic applications. The threaded connection prevents early wear and the sticking that can occur with mechanical locking ball systems. Therefore, it is suitable for applications with high pressure and frequent pulse generation. The triple valve system effectively prevents disconnection and hydraulic fluid loss under conditions of high residual pressure. The safety sleeve used in the connection system prevents unexpected disconnection due to strong vibrations or bending. 【Features】 ○ Easy to clean, effective in reducing contamination intrusion into the system ○ Minimizes air entrapment during connection and disconnection, aiding optimal system operation ○ The patented internal component design is engineered to minimize pressure loss, preventing a decrease in system efficiency ○ Effective for easy connection under conditions of residual pressure ○ Prevention of unexpected disconnection through the safety sleeve of the connection system ○ Modular structure allows for diverse specifications of ports ○ Strong against peak pressure ○ Safe and simple to use ● For more details, please contact us or download the catalog.

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Flat Face Coupling "FIRG-Q Series"

Higher corrosion resistance than standard galvanized products is effective in specific corrosive environments.

The "FIRG-Q" flat face coupling is suitable for the transfer of weakly corrosive environments and corrosive liquids (such as sugar water, water, glycol, etc.). This product is made of carbon steel and undergoes special nitriding and oxidation treatments on its surface. The internal valve components are made of stainless steel AISI 303, and seals can be selected according to the type of liquid and operating temperature. The flat face design eliminates leaks during connection and disconnection, preventing contamination from entering the system. The "FIRG-Q" series, featuring a flat face design and corrosion resistance, is primarily suitable for industrial machine applications. 【Features】 ○ Easy to clean, effectively reducing contamination intrusion into the system ○ No loss due to leakage of hydraulic oil during connection and disconnection, reducing environmental impact ○ Minimizes air entrapment during connection and disconnection, aiding optimal system operation ○ Patent-pending internal component design minimizes pressure loss  → Prevents reduction in system efficiency ○ Higher corrosion resistance than standard zinc-plated products is effective in specific corrosive environments ○ Strong against peak pressure ○ Compact appearance ○ Safe and simple to use ● For more details, please contact us or download the catalog.

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Poppet valve type quick coupling "BIR Series"

Wide compatibility and a wide range of sizes - the most commonly used self-sealing coupling in the agricultural and industrial machinery fields.

The "BIR" series is a poppet valve type quick coupling compatible with ISO7241-1 "A". This series is made of carbon steel and has a zinc-plated surface. These couplings offer wide compatibility and are available in a broad range of sizes from 1/4” to 2”. Therefore, the "BIR" series is one of the most commonly used self-sealing couplings in the fields of agricultural and industrial machinery. 【Features】 ○ Enhanced sealing during disconnection due to the sealed poppet valve ○ Internal component design prevents turbulence and reduces pressure loss ○ Compact and slim design ○ Easy to use ● For more details, please contact us or download the catalog.

  • Structural Materials
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Poppet valve type quick coupling "IRB Series"

Compatible with international standard ISO 7241-1 "B" and used in various industrial hydraulic equipment.

The "IRB" is compatible with the world standard ISO 7241-1 "B" for poppet valve quick couplings. It features a carbon steel body with a zinc-plated surface treatment. It is designed for compatibility with global standards. The "IRB" is used in various industrial hydraulic applications. 【Features】 ○ The sealed poppet valve provides maximum sealing effect during disconnection. ○ The design of internal components is optimized to minimize turbulence and pressure loss. ○ Compact appearance. ○ Simple operation. ● For more details, please contact us or download the catalog.

  • Prime movers, torque converters, hydraulic equipment, generators
  • Structural Materials
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Poppet valve type quick coupling "IRBO Series"

Brass-bodied equipment active in the industrial machinery market where corrosion resistance is required.

The "IRBO" is a poppet valve type quick coupling series that is compatible with the international standard ISO 7241-1 "B". The body is made of brass, and the spring and locking ball are made of stainless steel. The "IRBO" was developed for applications in the industrial machinery market where the corrosion resistance of brass can be utilized. 【Features】 ○ The sealed poppet valve provides maximum sealing effect during disconnection. ○ The design of internal components is optimized to minimize turbulence and pressure loss. ○ Higher corrosion resistance compared to zinc plating. ○ Compact appearance. ○ Simple operation. ● For more details, please contact us or download the catalog.

  • Structural Materials
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Poppet valve type quick coupling "I Series"

The most common size coupling that expands the options for port selection through a modular structure.

The "I" series is a poppet valve quick coupling with a modular structure, made of carbon steel and zinc-plated on the surface. This coupling is compact and offers various port options due to its modular design, meeting the demands of various applications. It is available in the most common size of 1/2” compatible with ISO 7241-1 “A”. 【Features】 ○ The integrated seal poppet valve creates maximum sealing effect upon disconnection. ○ The optimal internal component design prevents turbulence and reduces pressure loss. ○ The modular structure expands port options. ○ Compact appearance. ○ Simple operation. ● For more details, please contact us or download the catalog.

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Poppet valve type quick coupling "IR-V Series"

The poppet type, which has higher sealing performance than the ball type, produces the maximum sealing effect during disengagement.

The "IR-V" is a poppet valve type quick coupling that is compatible with the "IR" ball valve series. It is made of carbon steel and has a zinc coating. It employs a poppet type, which offers better sealing performance compared to ball types. The size 1/2 is part of the "BIR" series and is compatible with the international standard ISO7241-1 series "A." 【Features】 ○ The sealed poppet valve provides maximum sealing effect during disconnection. ○ The design of internal components is optimized to minimize turbulence and pressure loss. ○ Compact appearance. ○ Simple operation. ● For more details, please contact us or download the catalog.

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Ball valve type coupling "IRS Series"

A coupling specifically designed for agricultural machinery that is resistant to wear and easy to attach and detach.

The "IRS" is a ball valve type panel mounting method with a double action sleeve female coupling. With this method, attachment and detachment can be done by pushing and pulling. This coupling is mainly used in agricultural tractors and is convenient for attaching and detaching attachments. Additionally, it has a feature that prevents unintended disconnection of the coupling. It is compatible with the ISO7241-1 series "A" and is sized at 1/2”. 【Features】 ○ Connection function that prevents disconnection under strong axial force ○ Balls made of hard steel are resistant to wear ○ Compact appearance ○ Easy to operate ● For more details, please contact us or download the catalog.

  • Structural Materials
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Poppet valve type coupling "IRC Series"

Stop droplets and avoid soil contamination! Additional O-ring to enhance sealing effect.

"IRC" consists of three types of dedicated design poppet valve couplings, each with distinct characteristics. They are used in various applications such as agricultural machinery, construction machinery, equipment machinery, and special vehicles. This is a recommended product for tough applications typically used in Nordic countries. The shape of the internal components has been optimized to minimize pressure loss and turbulence within the coupling. 【Features】 ○ The poppet valve is equipped with an elastomer seal, providing maximum sealing performance during disconnection. ○ O-rings and backup rings that are ideal for protecting the sealing area. ○ Additional O-rings enhance the sealing effect, preventing splashes and avoiding soil contamination. ○ Compact design. ○ Resistant to surge pressure and has high durability with easy operation. 【Differences Between Each Type】 ○ PC Type: Can be connected with residual pressure. ○ X Type: SUS316 body, using Viton seals (other types have high-tensile carbon steel bodies and NBR seals). ○ PL Type: No valve, free flow. ● For more details, please contact us or download the catalog.

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Screw Connection Flat Face Coupling "VEP-HD Series"

Non-spill type that contributes to the prevention of water quality pollution and soil contamination! It prevents oil from leaking externally during attachment and detachment, and allows for attachment and detachment even when there is residual pressure.

The "VEP-HD" allows for safe coupling and uncoupling even with high residual pressure due to its triple valve system. It also prevents external oil leakage during coupling and uncoupling. It is designed with heavy-duty, high-pressure hydraulic applications in mind, considering high repetitive peak pressures and significant mechanical stress. The "VEP-HD" is made from high-tensile carbon steel and features a nitrided surface treatment that reduces coupling wear. This series underwent one million impulse tests during its development. 【Features】 ○ The flat face is easy to clean and effectively reduces contamination intrusion into the system. ○ There is no external leakage of operating oil during coupling and uncoupling, reducing environmental impact. ○ Air entrapment during coupling and uncoupling is minimized, aiding in optimal system operation.

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Flat Face Coupling "A Series"

Minimizing air entrapment during attachment and detachment helps optimize the system's operation.

The "A" series embodies the technological innovations of Stucchi. It incorporates quality into flat face couplings. The use of high-strength materials internally allows for operation at higher pressures and is designed to minimize pressure loss. The modular structure offers flexibility by maintaining a compact shape while allowing for the selection of various types of screws, and can provide special ports as required. These features minimize losses and contamination in many applications that demand higher performance in the hydraulic industry. This is why the "A" series remains a leader. 【Features】 ○ The flat face is easy to clean and effectively reduces contamination ingress into the system. ○ There are no losses due to leakage of hydraulic fluid during connection and disconnection, reducing environmental impact. ○ Air entrapment during connection and disconnection is minimized, aiding optimal system operation. ○ The design of internal components is engineered to minimize pressure loss, preventing a decrease in system efficiency. ○ The modular structure allows for diverse specifications of ports. For more details, please contact us or download the catalog.

  • Structural Materials
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Flat Face Coupling "AX Series"

Strong against peak pressure. Compact appearance. Safe and simple to use.

The "AX" series coupling is a groundbreaking product that uses stainless steel in Stucchi's flat face couplings. The product is made from AISI316 stainless steel, making it ideal for applications in highly corrosive environments. The "AX" coupling employs Viton/fluorocarbon seals, and special seals can also be accommodated. The modular design allows for a selection of various joint screws, and special screws can be created. This structure also achieves miniaturization, contributing to improved performance as a coupling. 【Features】 - Easy to clean, effectively reducing contamination intrusion into the system. - No loss due to leakage of operating fluid during attachment and detachment, reducing environmental impact. - Minimizes air entrapment during attachment and detachment, aiding optimal system operation. - The patented design of internal components is engineered to minimize pressure loss, preventing a decrease in system efficiency. - The modular structure allows for diverse specifications of ports while enhancing the performance of the coupling. For more details, please contact us or download the catalog.

  • Structural Materials
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Screw-type flat face coupling "VEP-P series"

The internal pressure relief valve system is effective for easy connection when there is residual pressure.

The "VEP-P" screw-type flat face coupling series is a proposal from Stucchi suitable for high-pressure hydraulic applications and connections where residual pressure remains. This screw connection system prevents early wear and avoids the sticking of ball components that can occur in circuits with high pulse pressure. The triple valve structure allows for safe connections without oil loss during attachment and detachment, even in situations with residual pressure. 【Features】 - Easy to clean, effectively reducing contamination intrusion into the system. - No loss due to leakage of hydraulic fluid during attachment and detachment, reducing environmental impact. - Minimizes air entrapment during attachment and detachment, aiding optimal system operation. - The design of internal components is engineered to minimize pressure loss, preventing a decrease in system efficiency. - The internal pressure relief valve system is effective for easy connections in the presence of residual pressure. For more details, please contact us or download the catalog.

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