Provided is a hose connector that is protected from inadvertent disconnection, and permits any problem with the hose connection to be readily detected. The hose connector (10) includes a connector main body (12), and a lock member (14) fitted on the connector main body. When the lock member (14) is displaced to a locked position, an annular reduced diameter portion (42) of the lock member (14) approaches an annular enlarged diameter portion (24) of the connector main body (12) so that these two portions clamp the wall of the hose. The lock member (12) is held in the locked position by a second engagement portion (38) formed in the inner circumferential surface of the lock member (12) engaging the connector main body (12). When the lock member (14) placed in the locked position is subjected to a twisting force exceeding a prescribed value, a frangible part (49) provided between the second engagement portion (38) and the annular reduced diameter portion (42) fractures, but the connection of the hose is maintained because the second engagement portion supports the annular reduced diameter portion from the rear via the frangible part (49).

A pipe coupler includes a first jaw member, a first jaw extension, a second jaw member defining an open channel, a mounting board, a ratchet, and a first biasing member. The first and second jaw members are hinged to each other. The mounting board extends outwardly from the open channel of the second jaw member. The first jaw extension extends from the first jaw member, and is configured to extend into the open channel. The first jaw extension has a plurality of rack teeth. The ratchet is rotatably mounted on the mounting board, and has a plurality of ratchet teeth configured to mesh with the rack teeth. The first jaw extension is permitted to drive the ratchet to rotate unidirectionally against a first biasing force of the first biasing member.

There is provided a safety lock for a hose connector and valve on a flow line having an anchor that is in a fixed position relative to the valve, a movable body movably attached to the anchor, and a shroud and an actuator blocking member carried by the movable body. The shroud is sized and positioned on the movable body to limit access to the hose connector when the movable body is in a first position, and to permit access to the hose connector when the movable body is in a second position. The actuator blocking member is sized and positioned on the movable body to prevent the valve actuator from moving from a second to a first position when the movable body is in the second position, and to permit movement of the actuator when the movable body is in the first position.

A multi-coupling component (20) includes a plurality of fluid couplers (22, 24, 26, 28) that are fluidly connected to a plurality of corresponding fluid flow pathways (80, 84), and a case drain fluid coupler (32) that is fluidly connected to a low pressure drain fluid pathway (88); and a pressure relief mechanism (40) that is configured to be moved between a disconnected state, a partially connected state, and a fully connected state. The pressure relief mechanism is configured such that in the partially connected state the fluid flow pathways and drain fluid pathway are fluidly connected to perform a pressure relief function, and in the disconnected state and the connected state the drain fluid pathway is isolated from the fluid flow pathways. The pressure relief mechanism includes a pressure relief button, wherein the pressure relief button is depressed to move the pressure relief mechanism from the disconnected state to the partially connected state and to the connected state. The pressure relief mechanism may be operated manually by hand for the subsequent connection of individual fluid couplers, or automatically when a second multi-coupling component is attached to the multi-coupling component that has the pressure relief mechanism.

A lock device for a coupling part of a piping or valve of a raw-material container or the like, capable of preventing looseness and erroneous operation of a coupling, and having favorable stability because the device is fixed as a force is applied to a direction of additionally fastening the coupling. The lock device is provided for achieving prevention of looseness of a coupling part (4) formed of a screwed member (20) and a screwing member (21) side, and includes a clamp member (42) for additional fastening attached to the screwed member side, a clamp member (41) for positioning and fixing attached to the screwing member side, and a screw member (43) for fastening the clamp members. The clamp members are fastened with the screw member (43), thereby being fixed to the coupling part while a force is applied to a direction of additionally fastening the screwing member side.

A lock mechanism of a tubular body includes a housing to which a tubular body is mounted, a lock member locking and unlocking the housing and the tubular body, and a ring member rotatably attached on an outer periphery of the housing and moving the lock member between a lock position and an unlock position. When a locking portion of the lock member is locked to a locked portion of the housing, the lock member is retained in the unlock position. When the tubular body is inserted in the housing to unlock the locking portion and release an urging force accumulated in the lock member, the lock member moves to the lock position together with the ring member to lock the tubular body. When the ring member is slid in an axis direction of the tubular body after being locked, the tubular body can be locked with one touch.

A protection structure of a sampling tube of a tank truck is provided. A positioning and protecting base is provided around an outer circumference of the sampling tube. The sampling tube includes a sampling output port for connection with a sampling output hose. The positioning and protecting base includes a through hole. The sampling output port extends through the through hole to partly project outside of the positioning and protecting base. With such an arrangement, the stiffness and strength of the entire sampling output port are enhanced for resisting impact and hit, and readiness of connection between the sampling output port and a sampling output hose is not negatively affected to thereby improve usage performance of the sampling tube.

According to one aspect, a quick disconnect connector is provided. The quick disconnect connector includes a first component and a second component which is matable with the first component. A releasing element is engageable with at least one of the first component and the second component to unmate the first component and the second component. A locking element is movable between a locked position and an unlocked position. The locking element, in the locked position, engages the releasing element to prevent the releasing element from unmating the first component and the second component. The locking element is movable from the unlocked position to the locked position by application of a locking force to the locking element. The locking force can be applied to the locking element by fluid being carried by the quick-disconnect connector.

A gland assembly for a piping element includes a gland comprising a joint restraint assembly comprising a restraint base, the restraint base defining a restraint pocket, the joint restraint assembly further comprising a gripper disposed within the restraint pocket, wherein the gripper is configured to rotate within the restraint pocket about and between a disengaged position in which the gripper is disengaged from the piping element and an engagement position in which the gripper is engaged with the piping element. The gland assembly also includes a cover removably attached to the restraint base, the cover comprising a bottom wall comprising a stop leg; a sidewall; a tab extending from the sidewall, the tab preventing the cover from being pushed onto the restraint base in a fully depressed configuration and preventing the stop leg from engaging the gripper into the disengaged position.

A restraint system configured to stabilize catalyst loading tubes. The restraint system includes a first restraint that has a first collar portion and a second collar portion. The restraint system further includes a first fastener configured to attach the first collar portion to a first tube segment and a second fastener configured to attach the second collar portion to the first tube segment. The restraint system also includes a first linkage having a first end and a second end, and a second linkage having a first end and a second end. The restraint system includes a second restraint having a third collar portion and a fourth collar portion. The restraint system further includes a third fastener and a fourth fastener. The first ends of the first and second linkage couple to the first restraint and the second ends of the first and second linkage couple to the second restraint.