4R140
Reference number 4R140
The one-way valve for transtibial amputees

The 4R140 is a one-way valve. In combination with a PUR or TPE-coated sealing sleeve, it serves to create a vacuum in a transtibial socket. The one-way valve ejects excess air out of the socket during the stance phase, and closes during the swing phase so that air cannot re-enter. This prevents frictional and shearing forces.

4R140
Part Number 3C88-2
The one-way valve for transtibial amputees

The 4R140 is a one-way valve. In combination with a PUR or TPE-coated sealing sleeve, it serves to create a vacuum in a transtibial socket. The one-way valve ejects excess air out of the socket during the stance phase, and closes during the swing phase so that air cannot re-enter. This prevents frictional and shearing forces.

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