An air grid for supplying air under pressure. The air grid may be used as an air scour system for a filter for removing at least some impurities (e.g., foreign matter of any nature including a solid, a liquid or a gas) from water or wastewater or as an aerator for aerating wastewater in an aeration tank or basin. The air grid includes an adapter for permitting in field adjustment of one or more components (e.g., drop pipe) of the air grid. Preferably, the adapter houses a portion of an air supply header and a portion of a drop pipe such that the air supply header is disposed above the drop pipe. The adapter may include a detachable sealing assembly. A tool may be provided for inserting and/or removing one or more components of the air grid from the operation environment.

A telescopic fitment is provided for connection of a magnetic filter into a central heating system circuit, telescopic fitment including a first connector and a second connector, each of the first and second connectors including a filter connection end for connecting with the magnetic filter and a circuit connection end for connecting with the central heating system circuit, at least one of the first and second connectors including an inner pipe and an outer pipe, the filter connection end being provided on one of the inner or outer pipes and the circuit connection end being provided on the other of the inner or outer pipes, the inner pipe being slideable within the outer pipe for adjusting the position of the circuit connection end with respect to the filter connection end, whilst maintaining a sealed fluid path between the circuit connection end and the filter connection end.

Various systems and assemblies that can be utilized with hydraulic and other fluid flow lines are disclosed. According to one embodiment, the present application discloses an assembly that can include a first section, a second section and a third section. The first section can define a first passageway therein to receive and allow for passage of a fluid. The second section can define a second passageway that communicates with the first passageway. The second section and the first section together can form a first ball joint having an internal portion and an external portion. The first ball joint can comprise a moveable coupling between second section and the first section. The third section can define a third passageway that communicates with the second passageway. The third section can telescopically receive the second section therein and can be configured to form a linearly moveable joint between the third section and the second section.

The present invention relates to a swivel device (10) for connection of two conduits or hoses which are rotatable in relation to each other, wherein the device (10) comprises a first centre part (20) provided with a hole, which first centre part (20) has a first fastening portion (22) for attachment of a first conduit, and a second centre part (30) provided with a hole, which second centre part (30) has a second fastening portion (32) for attachment of a second conduit, wherein the first centre part (20) and the second centre part (30) are rotatable in relation to each other, wherein: the centre parts (20, 30) are mutually held together by means of an outer sleeve (150) which in one of its ends is anchored to the second centre part (30) and which in its other end is rotationally slidably arranged in relation to the first centre part (20), a tube part (40) is arranged inside the swivel device (10) in order to cover a gap (50) between the first centre part (20) and the second centre part (30), a first axial slide bearing (140) is arranged between the outer sleeve (150) and the first centre part (20), wherein the first axial slide bearing (140) comprises a slide bearing (141), and a second axial slide bearing (190) is arranged between the first centre part (20) and the second centre part (30).

In one embodiment, the invention is directed to a high-pressure bi-directional sealing system having circumferentially extending outer support rings (1520, 1900), annular, axial seals (1600, 1800) between the outer support rings (1520, 1900) and a circumferentially extending inner support ring (1700) located between the annular, axial seals (1600, 1800). The outer support rings (1520, 1900), seals (1600, 1800), and circumferentially extending inner support ring (1700) are located within a space between an outer tube (1502) and an inner tube (1504) that is telescopically disposed within the outer tube (1502). Seals (1600) and (1800) are oriented in opposite directions. Specifically, the opening of seal (1600) is facing in a first direction and the opening of seal (1800) is facing in a second direction that is opposite the first direction. This configuration enables the high-pressure bi-directional sealing system to handle pressure in both directions.

An exemplary bulkhead (104A) connector assembly (100) includes a housing (106) having a first opening (138) and a second opening (130). The assembly (100) may further include a collar (108) that has a portion received within one of the first and second openings. The collar (108) may be rotatable to a latched position to hold a conduit (104B) within the housing (106). Further, the assembly (100) may have a detent (118) holding the collar (108) in the latched position when the detent (118) is moved to a locked position. The detent (118) in the locked position may have an indicator surface (112) providing tactile feedback indicative of the detent (118) holding the collar (108) in the latched position.

Various embodiments include an adapter between two connectors and a coaxial coupling or a coaxial nipple. The two connectors are any combination of a separate coupling and a separate nipple. The adapter may include: a body with two cylindrical openings; a first element that fits in the first opening with connections for a first of the two connectors and the coaxial coupling or nipple; and a second element that fits in the second cylindrical opening, and a third connection for the other connector. The first element slides and rotates in the body and has a central axis eccentric to a central axis of the cylindrical first element part. The second element slides and rotates in the body. The central axis of the third connection is eccentric to a central axis of the cylindrical second element part.

A backflow prevention assembly is configurable with varying lay-lengths and orientations. The assembly includes coupling assemblies and valve bodies that adjust in length and/or rotation to allow for the varying lay-lengths and orientations of the backflow prevention valves and assemblies with and without certification. A coupling assembly is connected to a backflow prevention valve and includes an outer sleeve and an inner sleeve that is slidingly received within the outer sleeve. The lay-length is adjusted by slidably moving the inner and outer sleeves with respect to one another.

An internal pressure self-sealing rotary compensator has fixed and rotatable pipes; a fixed pipe end portion has a conical opening connected to a sealing base with an inner cavity having an inwardly protruding rotating base; an annular face sealing piece is on a rotating base outer side, and the annular face sealing piece is fixed in an annular face sealing cavity; an end face self-sealing piece is on a rotating base inner side, an end face self-sealing piece outer side face abuts against a rotatable pipe arc-shaped annular protruding face, an arc-shaped annular protruding face outer section smoothly transitions with a first outer conical face at the rotatable pipe end, and an arc-shaped annular protruding face inner section intersects with a rotatable pipe outer surface; the first outer conical face connecting to a second, and the second outer conical face taper matches that of fixed pipe end portion conical opening.

A connector assembly includes: (i) a first connector having a first housing and first pipes to flow fluid, (ii) a second connector having a second housing and second pipes to flow the fluid, and (iii) a blocker that has openings, and is disposed between the first pipes and the second pipes, and: (a) in a first position, the first pipes are facing the second pipes, respectively, but the blocker is configured to block flowing of the fluid between the first pipes and the second pipes, and (b) in a second position, in response to a rotation of at least a first portion of the connector assembly from the first position, relative to a second portion of the connector assembly, about a longitudinal axis of the connector assembly, the blocker is configured to enable the flowing by aligning the openings with the first pipes, and with the second pipes, respectively.