Full-flow Dual-interlock Coupling
Application: Data center liquid cooling
Materials: Stainless Steel 303
Tolerance: +/-0.01mm
Manufacturing: 5-axis CNC Machining
Facilities: Japan Mazak QTE-100MSYL
Description
Technical Parameters

What is the Full-flow Dual-interlock Coupling?
The Full-flow Dual-interlock Coupling is a high-performance fluid connector designed for fluid transfer and electronics cooling applications where full flow, fluid compatibility, and safety are essential. It features the FD83 patented locking mechanism with two interlock features to eliminate spills and ensure maximum safety. The coupling halves are identical, ensuring easy connection and disconnection without extra clamps. Valves cannot be opened until the coupling halves are mated, and they cannot be disconnected until both halves are closed.
Ideal for data center liquid cooling, these couplings provide high flow with low pressure drop for efficient, cost-effective cooling. Made from corrosion-resistant stainless steel 303 and EPDM seals, they offer durability, low maintenance, and long lifespan. Leak-free and 100% helium leak-tested, they ensure top-quality fluid containment. Available in 1" and 2" sizes with a variety of terminal end options, the Full-flow Dual-interlock Coupling system is suitable for a wide range of low-pressure industrial applications.

Full-flow Dual-interlock Coupling Product Specifications
The Full-flow Dual-interlock Coupling is designed for high-flow applications that require a safe, simple, and reliable dry break connection. It is ideal for uses such as computer cooling and bulk fluid transfer but can be adapted for various fluids through alternate materials, seals, and end ports.
This coupling offers improved flow compared to standard dry break quick disconnects. Its unobstructed flow path ensures maximum flow and minimal pressure drop, with no valve components in the flow area to cause blockages. The dual interlock system prevents spills, ensuring that valves cannot open until the halves are securely mated, and the halves cannot disconnect until both valves are closed.
The unisex design simplifies connections, removing the need for male and female parts, which streamlines operation and inventory management. A 360-degree swivel allows easy positioning of valve handles and reduces hose twisting. Key features include minimal spillage on disconnect, a locking pin and lever handle to prevent accidental disconnects, and optional color-coded bumpers to avoid cross-connections.
Constructed from durable materials like stainless steel with EPDM seals, it is built to handle up to 150 PSI operating pressure and 300 PSI burst pressure. This coupling is suitable for a wide range of low-pressure industrial and cooling applications where full flow and safety are critical.
Product drawing



|
Product Name |
Full-flow Dual-interlock Coupling |
|
Application |
Data center liquid cooling |
|
Materials |
Stainless Steel 303, 304 |
|
Hardness |
HRB 95 (SS303), HRB 92 (SS304) |
|
Roughness |
Ra<0.4um |
| Design | Locking Pin Design with Lever Handle |
|
Size Options |
1" and 2" |
|
Port Connections |
¾", 1", and 2" |
|
Tolerance |
+/-0.01mm |
|
Leak Testing |
100% Helium Leak Tested |
|
Manufacturing |
Sliding Headstock Lathe, 5-Axis CNC Machining |
|
Certification |
ISO 9001:2015, ISO 13485 |
|
Facilities |
Japan Mazak QTE-100MSYL, Citizen Cincom L12-1M7 |
| Transportation |
FedEx, DHL, TNT, EMS, etc. |
|
Packing |
PP bag or tailor-made packing on request |

Manufacturing Process for Full-flow Dual-interlock Coupling
Manufacturing the Full-flow Dual-interlock Coupling involves advanced machining techniques to ensure precision and reliability. Processes include 5-axis CNC machining, Swiss-type machining, and operations like turning, milling, and drilling. We use cutting-edge equipment, including the Mazak QTE-100MSYL and Citizen Cincom L12-1M7, to achieve exceptional accuracy. We maintain strict tolerances of +/-0.01mm and surface roughness of Ra < 0.4µm. High-quality materials and meticulous processes ensure each product meets rigorous standards.
After machining, we offer a variety of surface treatments to enhance performance and durability. Options include physical polishing, electropolishing, ultrasonic cleaning, acid etching, and passivation. Laser marking is available for products requiring identification or scales. Electropolishing improves corrosion resistance, reduces roughness, and creates a smooth finish. Ultrasonic cleaning uses sound waves to clean intricate surfaces and hidden channels, removing contaminants effectively without abrasion. These steps ensure the coupling is reliable, safe, and ready for demanding applications.
Process Flow
|
Components |
Process Flow |
Process Name |
Machine Used |
Machine Brand |
Inspection Equipment |
|
Full-flow Dual-interlock Coupling |
1 |
Incoming |
N/A |
N/A |
1. Pin gauge 2. Calipers |
| 2 |
Milling |
5-axis CNC Machine |
Mazak QTE-100MSYL |
Profile Projectors |
|
| 3 |
Turning |
5-axis CNC Machine |
Mazak QTE-100MSYL |
Profile Projectors |
|
| 4 |
Drilling |
5-axis CNC Machine |
Mazak QTE-100MSYL |
Profile Projectors |
|
| 5 |
Electrolytic polishing |
N/A |
N/A |
||
| 6 |
Ultrasonic cleaning |
N/A |
N/A |
||
| 7 |
Assembly |
N/A | N/A | ||
| 8 |
Sealing |
N/A | N/A | ||
| 9 |
Leak Testing |
N/A | N/A | ||
| 10 |
Inspection & packing |
N/A |
N/A |
Video of the CNC Manufacturing Process
Take a look behind the scenes. Watch as raw materials turn into precision-engineered Full-flow Dual-interlock Couplings. See our cutting-edge machines in action. Experience the skill and care we put into every step. Curious about our capabilities? Click to watch now!

Customized Services for Full-flow Dual-interlock Coupling
We specialize in providing professional OEM services for the Full-flow Dual-interlock Coupling and similar products. Our expertise allows us to fully customize various components, including the coupling body, seals, locking pins, levers, and end ports. Whether you require adjustments to fit specific applications or unique designs for improved performance, we have the flexibility to meet your needs.
In addition to the Full-flow Dual-interlock Coupling, we manufacture products within the same series, such as dry break couplings, high-flow quick disconnect couplings, and unisex connection systems. These products can be tailored with options like material variations, port sizes, and surface finishes. For example, we can produce a coupling with enhanced corrosion resistance using titanium or adapt the seal material to handle aggressive fluids.
FAQ

01.What is a Full-flow Dual-interlock Coupling?
02.What materials and size options are available for the Full-flow Dual-interlock Coupling?
03.What makes the coupling leak-proof?
The coupling features a dual interlock mechanism. Valves cannot be opened until the coupling halves are securely mated, and they cannot be disconnected until both valves are closed. This ensures a leak-free operation, further tested with 100% helium leak testing.
04.What industries and applications is it suited for?
These couplings are ideal for data center liquid cooling, bulk fluid transfer, and other low-pressure industrial applications requiring precise, safe, and efficient fluid handling.
05.Can the coupling be customized for specific needs?
Yes, the coupling can be fully customized in terms of materials, port sizes, seal types, and surface finishes to meet specific application requirements. We also produce related products like dry break couplings and quick disconnect systems.
06.What machining processes are used in manufacturing?
The coupling is manufactured using advanced 5-axis CNC machining and Swiss-type machining. Our equipment includes Mazak QTE-100MSYL and Citizen Cincom L12-1M7, enabling us to achieve tight tolerances of +/-0.01mm and a surface roughness of Ra < 0.4µm.
Contact us now
We are a professional OEM factory specializing in the design and production of Full-flow Dual-interlock Couplings and related high-performance fluid connection systems. Backed by years of expertise, we deliver reliable, precise, and safe solutions tailored to your specific needs.
Our factory operates under strict ISO9001 and ISO13485 quality management systems, ensuring that every product meets the highest standards of safety and performance. Equipped with advanced machining capabilities, we handle both small-batch sample production and large-scale manufacturing. No matter the size or complexity of your project, we ensure every customized solution meets your exact specifications with precision and consistency.
Our address
3rd Floor, Block 58, Changxing Industrial Park, Changzhen St., Guangming District, Shenzhen, Guangdong Province, China
Phone Number
+86-755-23699351
zhang@pride-cnc.com

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