摘要:
An improved device for attaching in the pipes of irrigating systems for removing silt and draining water composed of a tee for inserting in pipeline, a long drop pipe accommodating a valve seat, interior longitudinal flanges above said seat, and a buoyant captive ball between; ball being forced to seat under water pressure and rising when pressure is relieved, permitting silt and water to pass into open end sump below.
摘要:
A valve assembly for a refrigerant circuit, having at least two ball valves, which each have a ball as a control element and an actuator for adjusting the associated ball, and also a refrigerant circuit having heat pump functionality for a vehicle having such a valve assembly.
摘要:
The present disclosure provides a check valve connector system for coupling a lateral pipe and a main pipe. The check valve connector system can include a fitting, a saddle member, and a check valve. The fitting can include a first end, a second end, an elbow, and an opening. The opening can be formed between the first end and the second end. The first end can be configured to receive the main pipe. The elbow can extend outwardly from the fitting and can include an aperture. The aperture can include a pear-shaped cross section and can be configured to receive the lateral pipe. The saddle member can be configured to couple the fitting and the main pipe. The saddle member can include a hole for receiving the fitting. The check valve can be disposed between the fitting and the saddle member.
摘要:
A pump assembly is disclosed. The pump assembly including an outer casing having a first end, an opposing second end, and a cavity therein; a discharge tube positioned in the cavity and exiting the first end of the outer casing; a check valve positioned in the cavity and operably connected to the discharge tube by a coupling; and a multi-float control assembly positioned in the cavity, the multi float control assembly including a bottom float check valve operably connected to the discharge tube by the coupling and an upper float check valve connected to a vent exiting the first end of the outer casing.
摘要:
A method of making a three-flow-passage valve with a pressure indicator, comprising the steps of constructing a first half housing defining an upper flow passage, a middle flow passage, and a lower flow passage; constructing a second half housing defining the same flow passages; forming an access port through the housing in the middle flow passage; forming a first valve seat with one valve opening; assembling one movable valve opening stopper in the upper flow passage; adjusting the one movable valve opening stopper; forming a second valve seat with one valve opening; assembling one movable valve opening stopper in the upper flow passage; adjusting the one movable valve opening stopper to allow the one movable valve opening stopper in the middle flow passage; combining and sealing the first half housing with the second half housing; and mounting a pressure indicator to the access port.
摘要:
An apparatus to allow or stop a flow into a piping system or an enclosed environment comprises a housing having an upper flow passage, a gasket, and a lower flow passage, wherein said gasket is between said upper flow passage and said lower flow passage, wherein said gasket has an inner diameter less than an inner diameter of said upper flow passage; a rotary valve inside said housing, wherein said rotary valve further comprises a main body and two guides affixed to said main body in opposition to each other, wherein said main body of said rotary valve is configured to be between said inner diameter of said gasket and said inner diameter of said upper flow passage, and wherein said rotary valve can move inside said upper flow passage and above said gasket; and two guide rails inside the upper flow passage.
摘要:
Embodiments of a valve assembly and a method of detecting a leak in the same are provided herein. In some embodiments, a valve assembly for use with an enclosed environment includes a housing having an interior volume; a first valve having a first valve seat and a first sealing member at least partially extending through a first opening in the first valve seat in a closed position; a second valve disposed beneath the first valve and having a second valve seat and a second sealing member at least partially extending through a second opening in the second valve seat in a closed position; and a position sensing device coupled to an inner wall of the housing beneath the first valve and configured to detect a position of the first sealing member.
摘要:
A check valve construction is provided in which a moveable a movable ball having a convex surface resides in a cage having a conical frustum chamber and a seat for the ball. A fluid path between the ball and the cage is defined by the equation: G = D cos ( b - a ) 2 cos b - d 2 wherein G is the gap of the narrowest passageway of the fluid path, D is the diameter of the small end of the conical frustum chamber of the cage, d is the diameter of the convex surface of the ball, a is the angle between a vertical diameter of the ball and the position of the narrowest gap on the convex surface of the ball, and, b is the angle between the vertical diameter of the movable element and the position of the small end of conical frustum chamber of the cage.
摘要:
Apparatuses for restricting fluid flow through a well conduit comprise a tubular member having a seat member disposed within the tubular member for receiving a plug element. One or both of the seat member or the plug element comprise at least one shape-memory material to facilitate the plug element being able to land on the seat and/or to facilitate the plug element to pass through a seat member or other restriction in the tubular member either before or after landing on a seat.