Description
The 4R140 expulsion valve is a one-way valve specifically designed for manufacturing vacuum socket systems. It is installed directly in the socket and allows air to escape from the system automatically. The 4R140 expulsion valve is intended for prosthetists and providers who need a reliable, functional solution for a stable socket feel when fitting below-knee prostheses.
In vacuum socket systems, it is crucial to remove air from the socket in a controlled manner so that the prosthesis maintains a consistent fit. The 4R140 expulsion valve performs this task as a one-way valve: air is expelled automatically without any backflow. This helps provide a more even fit and can help reduce common issues in daily use, such as a “spongy” socket feel or loss of vacuum caused by trapped air.
Since the 4R140 expulsion valve is integrated directly into the socket, it is particularly suitable for applications that require a clean design close to the socket. It is specifically intended for below-knee prosthetic fittings and tailored to this application. Whether used in a new fabrication or when implementing a vacuum socket system, the 4R140 expulsion valve offers a practical component for controlled air evacuation from the socket.
Your benefits at a glance:
- One-way function for controlled air expulsion
- Supports vacuum socket systems through automatic air evacuation
- Direct installation in the socket for an integrated solution
- Suitable exclusively for below-knee prosthetic fittings
- Practical for use in prosthetic and orthotic technology
Technical details:
- Product name: 4R140 expulsion valve
- Valve type: One-way valve
- Suitability: Suitable for manufacturing vacuum socket systems
- Installation: Directly into the socket
- Application: Exclusively for below-knee prosthetic fittings
- Function: Automatic air expulsion
*Medical devices are not consumer goods within the meaning of this notice.




