Z-Swivel 1) Z-Swivel (M)x(M) 1/4" or (M)x(F) 1/4". 2) Allows the rotation of the control valve in different Z-Swivel1) Z-Swivel (M)x(M) 1/4" or (M)x(F) 1/4".2) Allows the rotation of the control valve in different planes even when all thesystem is under pressure. Z-Swivel