초록 ▼

A combination overfill protection device, fluid level gauge, includes a service valve having a body defining a set of wrench flats, an input port, and a tank port wherein the overfill protection device has a float that rotates a shaft in response to a change in fluid level, the shaft transitioning t

A combination overfill protection device, fluid level gauge, includes a service valve having a body defining a set of wrench flats, an input port, and a tank port wherein the overfill protection device has a float that rotates a shaft in response to a change in fluid level, the shaft transitioning the overfill protection device between opened and closed configurations and rotating a magnet within the service valve body proximate the wrench flat and wherein a gauge dial has a dial magnet housing sized to fit proximate to the wrench flat such that rotation of the magnet within the service valve actuates a dial magnet housed substantially in the dial magnet housing.

대표청구항 ▼

What is claimed is: 1. 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 definin

What is claimed is: 1. 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, anda 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;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 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 between the valve seat and the wrench flats to rotate with the shaft about a first axis and having a first magnetic flux field extending therefrom; anda dial mounted on the body of the service valve and having a body, a dial magnet, and a pointer;the body having a dial magnet housing extending therefrom with at least a portion of the dial magnet housing disposed adjacent to the body between the wrench flat and the valve seat;the dial magnet being rotatably mounted in the dial 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 interacting to cause rotation of the dial magnet about the second axis in response to rotation of the shaft magnet about the first axis;the pointer being mounted on the dial magnet to rotate with the dial magnet and provide a visual indication of the liquid level within the tank.