Abstract:
A valve system is disclosed herein. The valve system, in one arrangement, may comprise: a fluid pathway for transporting a fluid; a first valve operably coupled to the fluid pathway, the first valve comprising a first resilient element; a second valve operably coupled to the fluid pathway, the second valve comprising a second resilient element that is substantially identical to the first resilient element; wherein, when the first valve is in a closed state, the first resilient element is compressed to a first length so that the first valve opens at a first pressure; and wherein, when the second salve is in a closed state, the second resilient element is compressed to a second length so that the second valve opens at a second pressure, the first length is less than the second length such that the second pressure is less than the first pressure.
Abstract:
A check valve includes an internal liquid trap that prevents the backflow of gas and debris from degrading the valve. The internal liquid trap can be formed by internal passages within a valve housing. One embodiment includes three internal passages, an inlet passage, an intermediate passage, and an outlet passage, with connecting passages between each of the inlet passage and outlet package, and the intermediate package. In some embodiments, an internal trap is provided between the intermediate passage and the inlet passage.
Abstract:
A closed-loop refillable dispensing system may include one or more reusable or refillable product packages configured to dock with an automated filling station. The automated filling station automatically mixes concentrated chemical product with a diluent and dispenses the resulting chemical product solution. The product package may include a fitment insert configured to mate with a docking connector at the automated filling station. When the product package is removed from the docking connector, the fitment insert provides a positive, leak-proof seal for the product package.
Abstract:
A filler device for a fluid tank, including: a filler duct; a first stopper, for preventing overfilling of the tank, and a second stopper for preventing fluid from leaving the tank in unwanted manner; a first float mechanically connected to the first stopper such that, on being placed in a predetermined position, the first float closes the first stopper; and a holder system for holding the second stopper, which system, when fluid leaves the tank, closes the second stopper, and when fluid enters into the tank, opens the second stopper. In an operating position of the device, and under effect of a heavy element, the holder system acts continuously on the second stopper, tending to maintain the second stopper permanently in its closed position.
Abstract:
A valve assembly includes a valve body having a first port and a second port, the first port forms a fluid pathway from a first surface of the valve body to a second surface of the valve body, and the second port forms a fluid pathway from the second surface of the valve body to a third surface of the valve body; a first plate having a first blocking member, the first blocking member configured to block the first port at the first surface of the valve body when the first plate is in a first closed position; and a second plate having a second blocking member, the second blocking member configured to block the second port at the second surface of the valve body when the second plate is in a second closed position.
Abstract:
A system and method for inserting removable drain valve within an inlet opening of a drain basin and then sealing the drain valve within the drain basin. The removable drain valve has a cylindrical housing with a check valve disposed with an outlet of the drain basin to allow drain water to flow out from the outlet of the drain basin while blocking flow from the outlet of the drain basin to the inlet of the drain basin. A cylindrical expander band having first and second ends spaced from each other is disposed about the cylindrical housing. A cylindrical gasket is mounted about the cylindrical housing and the cylindrical expander band. A paddle lock lever is pivotally mounted within the cylindrical housing. The paddle lock lever has an expander head to expand the cylindrical expander band and cause the cylindrical gasket to expand and seal against the drain basin.
Abstract:
A spring element includes a disc-shaped basic body, in which at least one spring bridge is inserted. The basic body has at least one dynamic throttle point to throttle a fluid flow. The basic body has a resilient configuration in a region of the at least one throttle point. Accordingly, an opening cross section of the at least one throttle point is configured to be set variably depending on a pressure difference.
Abstract:
A dual check valve includes, a housing having a cavity fluidically connecting three ports, a movable member movably engaged within the cavity from at least a first position occluding a first port of the three ports, a second position occluding a second port of the three ports, and a third position allowing flow between both the first port, the second port and a third port of the three ports.
Abstract:
A check valve includes an internal liquid trap that prevents the backflow of gas and debris from degrading the valve. The internal liquid trap can be formed by internal passages within a valve housing. One embodiment includes a plurality of concentric fluid passages, connected by a set of radial conduits.
Abstract:
A device is disclosed that may include a spool valve having a first connector and a second connector and a spool movable for controlling flow between the first connector and the second connector, regardless of direction of flow through the spool valve. A pilot valve having an inlet and an outlet develops a command pressure. A feedback circuit having an inlet and an outlet develops a feedback pressure. The spool valve may be responsive to the command pressure and the feedback pressure. A fluid rectifier circuit is provided to connect the higher pressure of the first connector and second connector to the pilot valve inlet and feedback circuit inlet, and connect the other of the first connector and second connector to the pilot valve outlet and feedback circuit outlet.