Service valve assembly having a stop-fill device and remote liquid level indicator

A combination tank valve apparatus providing fluid flow control, overfill protection, and fluid level gauging for use on a storage tank for liquefied gas, the storage tank having an internally threaded outlet port, the apparatus comprising:

• a service valve having a body defining a tank connection, a valve seat, a valve outlet, and a pair of wrench flats;
• the tank connection having external threads formed thereon adapted for threaded connection into the outlet port of the tank, and defining an internal passage including a throat disposed on a first side of the valve seat and connected to a lower port;
• the valve outlet defining an internal passage disposed on a second side of the valve seat and connected to an outlet port;
• the wrench flats projecting from opposite exterior sides of the body adjacent to the throat to define substantially flat surfaces oriented parallel to one another, at least one of the wrench flats having a pointer magnet recess formed entirely in the flat surface;
• an overfill protection device mounted to the tank connection of the service valve and including a float, a shaft, a overfill valve, and a shaft magnet;
• the float adapted to float at the liquid/gas interface of a liquefied gas in the tank;
• the shaft operably connected to the float to rotate in response to changes in the position of the float and the shaft having an upper portion extending into the throat of the service valve;
• the overfill valve operably connected to the shaft to transition between opened and closed configurations when the shaft rotates into a predetermined position;
• the shaft magnet firmly mounted to the upper portion of the shaft within the throat of the service valve adjacent to the wrench flats to rotate with the shaft about a first axis and having a first magnetic flux field extending therefrom;
• and
• a dial mounted on the body of the service valve and having a body, a pointer magnet, and a pointer;
• the body having a pointer magnet housing extending therefrom and dimensioned to be received within the pointer magnet recess of the wrench flat;
• the pointer magnet being rotatably mounted in the pointer magnet housing to rotate about a second axis oriented substantially orthogonal to the first axis and having a second magnetic flux field extending therefrom and at least partially overlapping the first magnetic flux field, the first and second magnetic flux fields magnetically coupled to cause rotation of the pointer magnet about the second axis in response to rotation of the shaft magnet about the first axis;
• the pointer being mounted on the pointer magnet to rotate with the pointer magnet and provide a visual indication of the liquid level within the tank.