Relief Valve with Position Indication

摘要

A surge relief valve includes a piston housing and a piston located within the housing for reciprocal motion. The surge relief valve also includes a position sensor to resolve the axial position of the piston relative to the piston housing. The position sensor includes a sensor body coupled to the piston housing and a movable element configured to move linearly relative to the sensor body and configured to move axially with the piston. At a least portion of the sensor body is located within the piston housing.

主权项

1. A surge relief valve comprising:
a piston housing having longitudinal axis; a piston disposed within the housing and configured for reciprocal motion along the axis; and a position sensor configured to resolve axial positions of the piston relative to the piston housing, the position sensor comprising:
a sensor body coupled to the piston housing; anda movable element configured to move linearly relative to the sensor body and configured to move axially with the piston; wherein a least portion of the sensor body is disposed within the piston housing; and wherein the sensor is configured to generate a response that correlates to the position of the piston relative to the piston housing.