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Overview
The Quick Rigid Coupling is a game-changing pipe fitting that combines the rigidity of traditional rigid couplings with the convenience of rapid installation and disassembly. Designed for applications where frequent maintenance, tool-free assembly, and stable connections are essential, this coupling is a staple in automated machinery, fire protection systems, and industrial pipelines. Unlike standard rigid couplings that require tools and precise alignment, the Quick Rigid Coupling features a unique locking mechanism that allows for instant connection and removal, significantly reducing downtime. Crafted from high-strength materials like steel and aluminum, it delivers backlash-free rigidity, ensuring that pipes remain securely aligned even under heavy loads and vibrations. Whether used in robotics, packaging lines, or HVAC systems, the Quick Rigid Coupling offers a perfect balance of efficiency, durability, and performance, making it a preferred choice for modern industrial and commercial projects.
Product Description
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| Air pressure and holding pressure schedule | ||||
| NO. | Size | Pressure | Time to keep the pressure | Remark |
| 1 | ≤DN50 | ≥0.5MPa | ≥5s | Air pressure |
| 2 | >DN50~DN350 | ≥0.5MPa | ≥10s | Air pressure |
| 3 | >DN350 | 1.5times the rated working pressure | 5min | water pressure |
| Rubber gasket | |||
| Name | Recommended Application Medium | Related Standards | Recommended Application Temperature Range |
| E:EPDM | water supply,drainage, sewage,normal temperature air,weak acid,and weak alkali | GB5135.11 | -30℃~+130℃ |
| GB/T 21873 | -22°F~+266°F | ||
| continuous supply of 110℃ hot water | GB/T 27572 | ||
| D:NITRILE | petroleum,vegetable oil, mineral oil | GB5135.11 | -20℃~+80℃ |
| GB/T 23658 | -4°F~+176°F | ||
| S:SIUCON | drinking water | GB/T 28604 | -40℃~+180℃ |
| high-temperature dry air and some high-temperature chemicals | GB5135.11 | -40°F~+356°F | |
| F:FLUORINE | the acid,alkaline solution,and hot lubricating oil | HG/T 2181 | -20℃~+180° |
| -4°F~+356F | |||
| V:NEOPRENE | seawater | '-20°℃~+100℃ -4°F~+212°F | |
| Nominal Size mm/in | Pipe O.Dmmin | Working Pressure PSVMPa | Bolt Size | Dimensions L mm/in | UL | FM | ||
| No.-Size mm | φ | L | H | |||||
| 50 2 | 60.3 2.375 | 500 3.45 | 2-M10x55 | 87 3.425 | 123 4.843 | 44 1.732 | UL | FM |
| 65 2-1/2 | 73.0 2.875 | 500 3.45 | 2-M10x55 | 100 3.937 | 138 5.433 | 44 1.732 | UL | FM |
| 65 2-1/2 | 76.1 3.000 | 500 3.45 | 2-M10x55 | 103 4.055 | 142 5.591 | 45 1.772 | UL | FM |
| 80 3 | 88.9 3.500 | 500 3.45 | 2-M12x60 | 117 4.606 | 166 6.535 | 45 1.772 | UL | FM |
| 100 4 | 114.3 4.500 | 500 3.45 | 2-M12x65 | 139 5.472 | 190 7.480 | 49 1.929 | UL | FM |
| 125 5 | 133.0 5.250 | 300 2.07 | 2-M12x75 | 162.6 6.401 | 216 8.504 | 48 1.889 | UL | FM |
| 125 5 | 139.7 5.500 | 400 2.75 | 2-M12x75 | 168 6.614 | 218 8.583 | 49 1.929 | UL | FM |
| 125 5 | 141.3 5.563 | 400 2.75 | 2-M12x75 | 167 6.575 | 219 8.622 | 49 1.929 | UL | FM |
| 150 6 | 159.0 6.250 | 300 2.07 | 2-M12x75 | 189.4 7.456 | 240 9.448 | 48 1.889 | UL | FM |
| 150 6 | 165.1 6.500 | 400 2.75 | 2-M12x75 | 193 7.598 | 241 9.488 | 49 1.929 | UL | FM |
| 150 6 | 168.3 6.625 | 400 2.75 | 2-M12x75 | 198.5 7.815 | 249 9.803 | 50 1.969 | UL | FM |
Instant Installation & Disassembly
The standout feature of the Quick Rigid Coupling is its tool-free, rapid assembly design. With a simple locking mechanism (such as spring-loaded ball detents or tapered sleeves), it can be connected or disconnected in seconds, eliminating the need for wrenches, bolts, or precise alignment. This saves valuable time during installation, maintenance, or system modifications.
Despite its quick-connect functionality, the Quick Rigid Coupling maintains a high level of rigidity with zero backlash. This ensures precise pipe alignment and stable connections, critical for applications like automated machinery, robotics, and precision manufacturing where even minor movement can compromise performance.
Manufactured from high-strength materials including steel, aluminum, and ductile iron, the coupling is built to withstand heavy loads, harsh operating conditions, and high torque. Surface treatments like electrophoretic painting and galvanization enhance corrosion resistance, extending its service life in industrial, outdoor, and corrosive environments.
The Quick Rigid Coupling adheres to international size standards (ISO6182, AWWA C606) and is available in sizes ranging from 1"-24", making it compatible with a wide range of pipes and systems. It supports various media, including water, oils, chemicals, and gases, and is certified by UL and FM for use in fire protection applications.
Automated Machinery & Robotics
In robotics, tool changers, and automated production lines, the Quick Rigid Coupling enables fast and precise component changes. Its tool-free installation reduces downtime between production runs, while its backlash-free rigidity ensures accurate movement and alignment, improving overall productivity.
Fire protection systems, such as sprinkler networks and fire hydrant lines, benefit from the Quick Rigid Coupling’s rapid installation and reliable sealing. In emergency situations or maintenance, it allows for quick repairs or modifications, ensuring the system is always operational. Its UL and FM certifications confirm its suitability for critical fire safety applications.
Packaging plants and food processing facilities require frequent equipment changes and maintenance. The Quick Rigid Coupling simplifies pipe connections for fluid transport (such as cleaning solutions, ingredients, and cooling water), reducing downtime and ensuring compliance with hygiene standards. Its easy disassembly also facilitates thorough cleaning.
For HVAC systems in commercial buildings, schools, and hospitals, the Quick Rigid Coupling provides a convenient solution for pipe connections that require occasional maintenance. It allows for fast disassembly of air ducts or fluid pipes, making repairs, inspections, and upgrades more efficient without disrupting building operations.
Main production process

Installation Instructions

FAQ
A Quick Rigid Coupling is a rapid-install rigid pipe coupling designed to provide a fixed, backlash-free connection while allowing fast assembly and disassembly, often without special tools.
Unlike traditional rigid couplings that require bolts, tools, and precise alignment, a Quick Rigid Coupling uses a quick-lock or snap-in mechanism, reducing installation time and maintenance downtime.
They are widely used in fire protection systems, automated machinery, HVAC systems, industrial pipelines, robotics, and packaging lines, especially where frequent maintenance or modifications are required.
Yes. It offers full rigid performance, preventing axial movement, angular deflection, and rotation, ensuring stable pipe alignment even under vibration and heavy loads.
Quick Rigid Couplings are commonly manufactured from high-strength carbon steel or aluminum alloys, with protective surface coatings for corrosion resistance and long service life.
Yes. When equipped with appropriate sealing gaskets and certified designs, Quick Rigid Couplings can be used in fire protection piping systems, subject to project and code requirements.