The present invention discloses a novel double-valve continuous circulating valve with a clamping device, comprising a main through valve (5), a pup joint body (8), a middle connector (11) and a bypass valve (12); the main through valve seat (4), the main through valve (5) and the main through valve spring (6) are press-fitted in the pup joint body (8) through a main through valve limiting device (1); a bypass valve seat (10) is arranged at the lower side of the pup joint body (8), and the bypass valve (12) is mounted and fixed to the bypass valve seat (10) through a bypass valve limiting device (9); the middle connector (11) is press-fitted on the pup joint body (8) through a clamping device. The present invention solves the technical problems of dangerous incidents caused by the suspension of circulating medium.

A rapid-connect gas coupler is shown and described herein. In an embodiment, the rapid-connect gas coupler includes a spring-loaded probe within a probe cavity, which is defined by a housing and one or more latch segment. The probe can engage with a gas connector, which causes the latch segment to engage and couple with the gas connector.

A subplate mounted valve is disclosed having an open position and a closed position. The valve includes at least one pilot pressure intake port, a plurality of functional fluid ports, a spool movable between the open position and the closed position, and spring biasing the spool to either the open position or the closed position. To reduce water hammer due to quickly opening or quickly closing the valve, a flow regulation assembly is positioned at the pilot pressure intake port and has a chamber with a larger inlet channel at the intake position and transitioning to a smaller channel at the outlet position such that fluid flow at the intake port is reduced, thereby slowing the transition between the open position and the closed position and the transition between the closed position and the open position.

A subplate mounted valve is disclosed having an open position and a closed position. The valve includes at least one pilot pressure intake port, a plurality of functional fluid ports, a spool movable between the open position and the closed position, and spring biasing the spool to either the open position or the closed position. To reduce water hammer due to quickly opening or quickly closing the valve, a flow regulation assembly is positioned at the pilot pressure intake port and has a chamber with a larger inlet channel at the intake position and transitioning to a smaller channel at the outlet position such that fluid flow at the intake port is reduced, thereby slowing the transition between the open position and the closed position and the transition between the closed position and the open position.

A rapid-connect gas coupler is shown and described herein. In an embodiment, the rapid-connect gas coupler includes a spring-loaded probe within a probe cavity, which is defined by a housing and one or more latch segment. The probe can engage with a gas connector, which causes the latch segment to engage and couple with the gas connector.

A fluid connector includes an extending section having a spiked end to pierce a container port. The extending section includes at least one air conduit and at least one fluid conduit therethrough. The extending section further includes first and second abutment members. The first abutment member is adapted to abut a first or air side of the container port upon piercing of the container port, and the second abutment member, which is spaced from the first abutment member, is adapted to abut a second or fluid side of the container port. The fluid connector can further include grasping members extending from the extending section to facilitate rotation of the extending section relative to the container port during piercing thereof. The fluid connector can also include a check valve in fluid connection with the at least one air conduit. The check valve may be positioned within the extending section.

A coupling and method are provided that include a coupler and nipple. The nipple has a valve in a normally-closed position and an outer peripheral surface with a plurality of spaced-apart, close-ended cam paths. The coupler has a valve in a normally-closed position and includes a set of latching balls for engagement with the cam paths to secure the coupler to the nipple. The coupler further includes a sleeve mounted thereon and movable between forward and retracted positions. In the forward position, the latching balls are forced into an inward position that prevents release of the latching balls from the cam paths, and in the retracted position, the latching balls are permitted to extend to an outward position enabling initial engagement with or disengagement from the cam paths. The coupler also includes a set of locking balls that prevents movement of the sleeve to the retracted position.

A rapid-connect gas coupler is shown and described herein. In an embodiment, the rapid-connect gas coupler includes a spring-loaded probe within a probe cavity, which is defined by a housing and one or more latch segment. The probe can engage with a gas connector, which causes the latch segment to engage and couple with the gas connector.

A coupling and method are provided that include a coupler and nipple. The nipple has a valve in a normally-closed position and an outer peripheral surface with a plurality of spaced-apart, close-ended cam paths. The coupler has a valve in a normally-closed position and includes a set of latching balls for engagement with the cam paths to secure the coupler to the nipple. The coupler further includes a sleeve mounted thereon and movable between forward and retracted positions. In the forward position, the latching balls are forced into an inward position that prevents release of the latching balls from the cam paths, and in the retracted position, the latching balls are permitted to extend to an outward position enabling initial engagement with or disengagement from the cam paths. The coupler also includes a set of locking balls that prevents movement of the sleeve to the retracted position.

A damped actuator for a fluid regulator includes a diaphragm disposed in a housing, and a damper arranged to stabilize movement of the diaphragm in response to changes in pressure inside the housing. The damper includes a ball check valve arranged to allow air to exhaust out of the housing when above a preselected pressure. The damper may include interchangeable components so as to be modifiable to have different set point pressures to achieve different backpressures inside the housing.