摘要:
A fluid regulating device includes a valve body, a control element, a control assembly, and a sense tube. The valve body has an inlet, an outlet, a valve port, and a control element adapted to be displaced relative to the valve port to control the flow of a fluid between the inlet and the outlet. The control assembly is operatively coupled to the control element and includes a diaphragm disposed adjacent a diaphragm chamber. The sense tube has a first end, a second end, and a sense hole. The first end is positioned to communicate with the diaphragm chamber, the second end is disposed adjacent the outlet, and the sense hole being formed in the sense tube between the first end and the second end and being oriented along an axis that is angled relative to an axis of the outlet.
摘要:
A slam-shut safety device having a disc arrestor includes a valve body (112), a valve seat (120) between an inlet and an outlet, and a reset pin (136) shiftable between untripped and tripped positions. A valve disc support (160) includes has a threaded stem and is operatively coupled to the reset pin (136). A valve disc (122) fits on the stem of the support and shifts in response to movement of the valve disc support (160) between an open position and a closed second position in which the valve disc (122) is seated against the valve seat (120). A threaded nut (206, 208) is securable to the threaded portion of the stem of the valve disc support (160), and an arrestor spring (210) is positioned on the stem of the valve disc support (160) and is secured by the threaded nut (206,208). The arrestor spring (210) is arranged to apply a biasing force to valve disc (122).
摘要:
A slam-shut safety device includes a valve body, a valve disc, a reset pin, a and a guide collar. The valve disc is shiftable between an open position spaced away from a valve seat, and a closed position seated against the valve seat. The reset pin operatively is coupled to the valve disc and shiftable between an untripped position placing the valve disc in the open position and a tripped position placing the valve disc in the closed position. The guide collar includes a hollow cylindrical portion slidably supported in a guide bore and extending at least partly over the reset pin at a location adjacent to the valve disc. The guide collar is shiftable between a retracted position and an extended position relative to the guide bore for providing added structural integrity and protecting the reset pin from bending forces.
摘要:
A fluid regulating device includes a valve body having an inlet, an outlet, and a valve port, a control element adapted to be displaced relative to the valve port to control the flow of a fluid between the inlet and the outlet, a control assembly operatively coupled to the control element and including a diaphragm disposed adjacent a diaphragm chamber, and a sense tube. The sense tube has a first end, a second end, and a sense hole formed adjacent the second end. The first end is positioned to communicate with the diaphragm chamber, and the second end is disposed adjacent the outlet, with the second end being movable, relative to the first end, between a first position within the valve body and a second position extending outside of the valve body, the movement being in response to fluid flowing between the inlet and the outlet.
摘要:
Internal valve apparatus are described. An example internal valve includes a body (102) having a valve seat (202) disposed between an inlet (206) and an outlet (208). A flow control member (110) operatively coupled to the body moves between a first position in which the flow control member engages the valve seat to restrict the flow of fluid through the valve and a second position in which the flow control member is spaced from the valve seat to allow the flow of fluid through the valve. The example internal valve further includes a removable actuation member (114) disposed within the body and responsive to a fluid pressure to cause the flow control member to move between the first and second positions.
摘要:
A slam-shut safety device includes a valve body (12) and defining a flow path, a valve disc (44) mounted on a valve disc support (42) is movable between an open first position spaced away from the valve seat (20) and a closed second position seated against the valve seat (20). A reset pin (36) is operatively coupled to the valve disc support (42) and is shiftable between an untripped position placing the valve disc in the open position and a tripped position placing the valve disc (44) in the closed position. An anti-rotation assembly (40) is carried by cooperating portions of the valve disc (44) and the valve disc support (42), with the anti-rotation assembly (40) comprising at least one protrusion and at least one receiving area sized to receive the protrusion, the anti-rotation assembly (40) arranged to stop rotation of the valve disc (44)relative to the valve disc support (42).
摘要:
An example loading regulator having an internal relief valve apparatus includes a body having a loading diaphragm disposed between a first casing and a second casing. The first casing and a first side of the loading diaphragm define a first chamber and the second casing and a second side of the loading diaphragm define a second chamber. A relief valve assembly is coupled to the loading diaphragm. The relief valve assembly includes a relief valve seat having an aperture that forms a passageway to fluidly couple the first chamber and the second chamber and a relief valve plug movably coupled to the relief valve seat. The relief valve plug is to move away from the relief valve seat to a bleed position to allow the flow of fluid between the first chamber and the second chamber in response to an outlet pressure substantially greater than a pressure at which the loading regulator enters a lock-up condition.