The Full Flow quick release coupling range, unvalved, is designed specifically for low-pressure fluid cooling applications where any restriction is undesirable. The valvless design permits unrestricted hih flow rates with minimal pressure drop, a real advantage when connecting high-flow rate circuits within thermal control management. Available in eithe rplated brass or stainless steel.

Construction and Compliance

The construction of Hydraflex full flow couplings encompasses nickel-plated brass or stainless steel for the body material, and EPDM for the seal. These couplings are engineered to endure a temperature range of -30°C to +100°C, and are capable of withstanding positive pressure, though not designed for negative pressure applications. They're built to resist water and glycol, however, they don't provide lateral flexibility and are not to be utilised as swivel joints​2​.


Full flow couplings find their applications across various sectors, prominently in scenarios demanding high-flow circuit connections, such as thermoregulation applications​​. They are utilized in pneumatic and hydraulic systems where frequent connecting and disconnecting of lines are required, providing a secure, efficient, and leakage-preventive solution​.

Benefits and Features

Key benefits of full flow couplings include an unrestricted high flow, compact design, and an optional colour coding and safety lock feature for added safety protection. They help reduce pressure drop, making maintenance and service easy, and are known for their long service life in applications with maximum working pressures of 20 bar​2​. The ergonomic design and automatic locking systems in some variants enhance durability and ensure long-term reliability​.

Availability and Customisation

Hydraflex's range of Full Flow Couplings is available with optional colour-coded rings and a safety-locking device for enhanced safety. The availability of these couplings in various bore sizes and end connections allows for a degree of customisation to meet specific application requirements​.​.

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