A carbon nanotube (CNT) artificial muscle valve includes a hollow CNT tube. The hollow CNT tube includes: a plurality of CNT sheets wrapped in the form of a hollow tube; and a guest material infiltrating between the CNT sheets. At least one portion of the hollow CNT tube falls in at least one of A-C: A. has a thickness less than a thickness of the remaining portion of the hollow CNT tube, B. has an inner diameter that is less than an inner diameter of the remaining portion of the hollow CNT tube, and, C. CNTs in the at least one portion are aligned to a bias angle lower than a net bias angle of CNT sheets in the remaining portion of the hollow CNT tube. When a pressure of a fluid in the hollow CNT tube exceeds a predetermined pressure, the at least one portion of the hollow CNT yarn collapses and forms a kink.一種奈米碳管(CNT)人工肌肉閥包括一中空CNT管。該中空CNT管包括:複數個呈一中空管的形式被包覆的CNT片;以及一滲透在該等CNT片之間的客體材料。該中空CNT管的至少一部分落在A-C的至少一者:A.具有一要比該中空CNT管的剩餘部分的一厚度更小的厚度,B.具有一要比該中空CNT管的剩餘部分的一內徑更小的內徑,以及,C.在該至少一部分的CNT被對準至一要比在該中空CNT管的剩餘部分的CNT片的一淨偏角更低的偏角。當在該中空CNT管的一流體的一壓力超過一預定壓力時,該中空CNT紗的該至少一部分崩陷並且形成一扭結。