Abstract

Apparatus for forming a fluidic seal such as in a clean service relief valve. In accordance with some embodiments, a ring-shaped sealing member has an annular main body portion with an innermost surface at an innermost diameter, an outermost surface at an outermost diameter and opposing top and bottom flat surfaces which respectively extend between the innermost surface and the outermost surface. An annular first projection extends away from the top flat surface in a first direction, and an annular second projection extends away from the bottom flat surface in an opposing second direction.

IPC Classes  ?

• F16L 17/06 - Joints with packing adapted to sealing by fluid pressure with sealing rings arranged between the end surfaces of the pipes or flanges or arranged in recesses in the pipe ends or flanges
• F16K 3/24 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members

Abstract

An environmental (weather) protective cover for a vent conduit. In accordance with some embodiments, a flexible body portion is adapted to cover a distal end of a vent conduit coupled to an upstream pressure source. A flap supported by the body portion has a flap slot opening. The body portion and the flap have a closed mode in which the vent conduit is sealed and an open mode in which the body portion and the flap slot opening are expanded when pressurized fluid discharging from the vent conduit is sufficient to flex the body portion and increase the slot opening to discharge the pressurized fluid. The body portion and the flap return to the closed mode when the pressurized fluid has been released.

IPC Classes  ?

• F16K 15/14 - Check valves with flexible valve members

Abstract

Apparatus for controlling a pressurized fluid in a piping network, and method for making the same. In accordance with some embodiments, a substantially cylindrical body has an annular wall surrounding a central axis with opposing first and second ends and at least one pass-through aperture extending through a medial portion of the wall. An annular valve seat is nested within a first end of the body. A moveable piston is aligned within the body along the central axis, the piston having a sealing surface adapted to contactingly engage an inner annular surface of the valve seat to establish a fluidic seal. The body, valve seat and piston form a valve insert for a valve housing.

IPC Classes  ?

• F16K 15/06 - Check valves with guided rigid valve members with guided stems
• F16K 15/02 - Check valves with guided rigid valve members

Abstract

A valve seat assembly for a pressure relief valve in which a valve member is biased against a valve seat to a closed position and movable away from the valve seat to an open position when inlet fluid pressure reaches a predetermined threshold value, the valve seat assembly having a seat body with an internal bore and positioned to abut the valve member when moved by the spring to the closed position. An insert member is disposed in the seat body to extend between an upper end of the seat body and a resilient member supported by the seat body for resiliently pressing against the insert member, the upper end of the insert member supporting the valve seat to seal with the valve member.

IPC Classes  ?

• F16K 25/00 - Details relating to contact between valve members and seats

Abstract

A fluid control assembly configured to isolate a pressurized fluid, including an under pressure abatement assembly having a collapsible member and an energy storage member for exerting a collapsing force on the collapsible member while contactingly engaging a pivotal valve member. A conduit path directs pressurized fluid to exert a force in opposition to the collapsing force so that when the fluid pressure falls below a low pressure threshold, the collapsing force will collapse the collapsible member and release the valve member. An over pressure abatement assembly can be included having a second collapsible member and a second valve member, a conduit path directing pressurized fluid to exert a force in a direction to collapse the second collapsible member and release the second valve member when the fluid pressure exceeds an upper pressure threshold.

IPC Classes  ?

• F16K 17/14 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side with fracturing member
• F16K 17/40 - Safety valvesEqualising valves with fracturing member, e.g. fracturing diaphragm, fusible joint

Abstract

A cap assembly (102, 120, 130, 140, 150, 170, 190, 200, 230, 250, 280) adapted to detect a leak through a pressurized valve (100, 202). In accordance with various embodiments, the cap assembly includes a body (104, 121, 141, 141, 152, 171, 191, 204, 232, 252), adapted for placement in fluid communication with the valve, and a sensor (110, 110A, 110B, 174, 192, 214, 238, 262, 282) supported by the body to provide human sensory indication of pressurized fluid leaking from the valve in its closed position. In various embodiments, the sensory indicator can be a whistle that makes an audible sound, a light emitting device that emits a visible light, etc. In further embodiments, the cap assembly body can be coupled to a conduit (122) via a tether (106, 124, 154, 206, 254) and ejected therefrom responsive to exhausted pressurized fluid when the valve transitions to an open position.

IPC Classes  ?

• F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given

Abstract

A protective cap assembly for a pressurized valve adapted to detect a leak therethrough. In accordance with various embodiments, the cap assembly includes a body adapted for placement in fluid communication with the valve, and a sensory indicator supported by the cap assembly body to provide human sensory indication of pressurized fluid leaking from the valve in its closed position. In various embodiments, the sensory indicator can be a whistle that makes an audible sound, a light emitting device that emits a visible light, or both. In further embodiments, the cap assembly body can be coupled to the vent conduit via a tether, and ejected responsive to exhausted pressurized fluid when the valve transitions to the open position. The displaced cap assembly body serves as a visual indication that the valve has opened.

IPC Classes  ?

• G01L 19/12 - Alarms or signals

Abstract

Apparatus for controlling a pressurized fluid. In accordance with some embodiments, a valve assembly includes a piston moved between closed and open positions. A sealing member is disposed within an annular recess of the piston and characterized as an endless annular ring extending about a central axis of the piston. The sealing member has an elongated circle cross-sectional shape when the sealing member is in an uncompressed state prior to installation in said recess. The cross-sectional shape is defined by parallel top and bottom surfaces having a length L in a direction perpendicular to and intersecting the central axis, and having opposing inner and outer surfaces of a radius R, the inner and outer surfaces respectively facing toward and facing away from the central axis, and wherein the dimensional value of L is at least five times greater than the dimensional value of R.

IPC Classes  ?

• F16K 1/00 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces

Abstract

A relief valve assembly to relieve overpressure of a pressurized fluid. In accordance with some embodiments, the assembly comprises a housing with an inlet and an outlet to form a conduit for a pressurized fluid. A normally closed valve member is axially displaceable within the housing to engage a valve seat to prevent a flow of the pressurized fluid along the conduit. A biasing member applies a bias force to the valve member to retain the valve member against the valve seat. A piston within the valve member contactingly engages the pressurized fluid. A mechanically collapsible member resists axial movement of the piston responsive to said contacting engagement of the pressurized fluid. The piston and collapsible member decouple the bias force supplied by the biasing spring member upon the valve member from a force upon the valve member applied by the pressurized fluid, thereby maintaining a bubble-tight seal.

IPC Classes  ?

• F16K 17/14 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side with fracturing member

Abstract

A vapor pressure equalization assembly (1 10) having an underpressure relief assembly (120) and an overpressure relief assembly (122) in fluidic communication with the vapor space (106) of a liquid storage tank (102). The underpressure and overpressure relief assemblies each have movable pistons (136, 162) sealingly engageable with respective sealing members (138, 164), and biasing members (146, 168) which exert respective biasing forces to maintain the pistons in sealing engagement with the sealing members. A predetermined underpressure or overpressure differential between the vapor space pressure and atmospheric pressure will cause one of the pistons to open fluidic communication of the vapor space to equalize the vapor space pressure with that of the surrounding atmospheric pressure.

IPC Classes  ?

• G05D 16/00 - Control of fluid pressure

Abstract

A cap assembly (102, 120, 130, 140, 150, 170, 190, 200, 230, 250, 280) adapted to detect a leak through a pressurized valve (100, 202). In accordance with various embodiments, the cap assembly includes a body (104, 121, 141, 141, 152, 171, 191, 204, 232, 252), adapted for placement in fluid communication with the valve, and a sensor (110, 110A, 110B, 174, 192, 214, 238, 262, 282) supported by the body to provide human sensory indication of pressurized fluid leaking from the valve in its closed position. In various embodiments, the sensory indicator can be a whistle that makes an audible sound, a light emitting device that emits a visible light, etc. In further embodiments, the cap assembly body can be coupled to a conduit (122) via a tether (106, 124, 154, 206, 254) and ejected therefrom responsive to exhausted pressurized fluid when the valve transitions to an open position.

IPC Classes  ?

• F16K 27/08 - Guiding yokes for spindlesMeans for closing housingsDust caps, e.g. for tyre valves
• F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
• G01M 3/02 - Investigating fluid tightness of structures by using fluid or vacuum