Angular travel position sensor for valve and valve assembly

The utility model discloses an angular travel position sensor for a valve and a valve assembly, and relates to the field of angle sensors and Hall switch angle sensors. The sleeve is arranged on the indicating rod in a sleeving manner; the magnetic ring is sleeved and fixed on the sleeve; the fastener is arranged on the indicating rod and used for fastening the sleeve; the PCB comprises a Hall switch, and the Hall switch is located in the radial direction of the magnetic ring and arranged on the periphery of the outer side face of the magnetic ring; wherein when the sleeve is fastened by the fastener, the sleeve can rotate along with the indicating rod; when the sleeve is not fastened by the fastener, the sleeve can rotate around the axis; the magnetic ring and the matched Hall switch sensor are arranged to achieve non-contact detection of the position of the valve, the magnetic ring is arranged on the rotatable sleeve, the orientation of the magnetic field generated by the magnetic ring can be adjusted by ro