Patent ID: 6325095
Filing Date: 2001-12-04
Classification: F16K,Y10T

Abstract:
A plunger housing capable of valve control of a valve positioned between an inlet and an outlet, the plunger housing capable of valve control via an orifice, the valve having an valve open position and a valve closed position, the valve in the valve open position enabling fluid flow between the inlet and outlet, the valve in the valve closed position inhibiting fluid flow between the inlet and the outlet, the plunger housing comprising:a. a plunger capable of travel within a plunger chamber between a plunger open position and a plunger closed position, the plunger in the plunger open position enabling fluid flow through the orifice, the plunger in the plunger closed position inhibiting fluid flow through the orifice;b. a lock assembly capable of engaging the plunger in the open position and incrementally locking the travel of the plunger through the plunger chamber;c. a plunger closing bias capable of actuating the valve into the valve closed position in response to a preset high level of fluid;d. a plunger opening bias capable of actuating the valve into the valve open position in response to a preset low level of fluid, the plunger opening bias capable of tracking the range of the level of fluid between and including the high level and the low level of fluid; ande. independently adjustable high and low level control settings, the high level control setting defining the high level of fluid and the disengagement of the lock assembly, the low level control setting defining the low level of fluid and the point at which the plunger opening bias overcomes the plunger closing bias.