A fluid end assembly comprising a plurality of fluid end sections positioned in a side-by-side relationship. Each fluid end section comprises a housing having a bore formed therein for housing a reciprocating plunger. Fluid is prevented from leaking around the plunger by a packing seal assembly. The packing seal assembly comprises one and only one packing seal.

An air vent plug assembler and milker unit short milk tube having an air vent plug assembly to improve milk flow characteristics through the short milk tube. The short milk tube includes a wall with an upstream end and a downstream end and defining a milk passage bore extending between the upstream end and the downstream end. The wall defines a vent plug mounting hole. A vent plug extends through the vent plug mounting hole and includes a cap, a shaft joined to the cap, and a barbed end joined to the shaft, the vent plug defining a vent passage to at least partially vent the milk passage bore. A flow dimple is defined in the barbed end and disposed in the milk passage bore.

A fluid plug for use with sterile processes such as the manufacture or production of pharmaceuticals and biologics is disclosed. The fluid plug is made of a material or materials that will tolerate sterilizing processes such as gamma irradiation. The fluid plug is used to selectively plug the ends of flexible polymer conduits that may be connected to fluids, reagents, or products used or generated as part of the manufacturing process. Also disclosed is the use of the plugs in combination with a series of valves in a block-and-bleed arrangement to enable the sterile transfer and connection of fluids, reagents, or products within a process flow.

A tube plug for securely sealing a tube to be plugged. The tube plug has a housing member with a cylindrical body, an undercut section, and a deformable wall. A ring is rotatably mounted to a post that extends axially from a front end of the housing member and offset from the longitudinal axis so that the ring is eccentric relative to the cylindrical body. An insert member having a threaded shank and a ramped ferrule can be threaded into the body to deform the deformable wall outwardly and into engagement with the tube to be sealed.

A duct stringer assembly with a bulkhead. The duct stringer assembly has duct walls providing a duct with a closed cross-section. The duct is adapted to transport fluid. A bulkhead is in the duct, and the bulkhead is adapted to block the flow of fluid along the duct. The bulkhead has a bulkhead body, and a gasket sealing a gap between the bulkhead body and the duct walls.

A tube plug for securely sealing a tube to be plugged. The tube plug has a housing member with a non-cylindrical body and a deformable wall. An insert member having a threaded shank and a ramped ferrule can be threaded into the body to deform the deformable wall outwardly and into engagement with the tube to be sealed. The non-cylindrical body allow the plug to be inserted into and used to plug a tube that is in a difficult to reach location and whose diameter may not be precisely known.

A method and apparatus for conditioning an RV/Marine toilet bowl seal, including providing an apparatus comprising a plug comprising a handle portion; and a solid foam coupled to the handle portion; wherein the handle portion is configured to allow a user to insert or remove the solid foam of the plug from a discharge opening of an RV/Marine toilet bowl; and wherein the solid foam is configured to make contact with at least a portion of the RV/Marine toilet bowl seal; pouring a conditioner into the discharge opening of the RV/Marine toilet bowl; inserting the plug into the discharge opening of the RV/Marine toilet bowl such that the solid foam contacts with at least a portion of the RV/Marine toilet bowl seal; and rotating the plug by about a quarter of a turn.

A waste pipe fitting assembly includes a tee wye fitting that has an outlet, a first inlet and a second inlet. The outlet is fluidly connectable to a sewer line of a sewer system. The second inlet is fluidly connectable to a drain pipe to place the drain pipe in fluid communication with the sewer line thereby draining water from the drain pipe into the sewer line. A pair of hangers is each of the hangers is coupled to the tee wye fitting and each of the hangers engages a respective support for suspending the tee wye fitting from the supports. Moreover, each of the hangers engages the respective support at an adjustable height to inhibit fluid from collecting in the tee wye fitting.

A sealing element for pipes has a central rod section with a circular head region with a grip area. The rod section includes in a downward direction from the head region, a first centering region with an inverted frustoconical shape, a second region with a discoidal outer contour that has flexible fins formed from a pair of diametrically opposed grooves and a third positioning region with a discoidal outer contour, the second region being larger in diameter than the first and third regions, including at least two extensions spaced apart from each other, protruding perpendicular to the central rod section, which have a length equal to or less than the diameter of the third positioning region. A fourth region has a discoidal outer contour with flexible fins formed from a pair of diametrically opposite grooves. The fourth region is located between the second region and the third region.

A drainpipe test plug for plugging a drainpipe via an opening formed therein includes a plug seal that includes a planar front surface which faces upward in the drainpipe whenever the drainpipe test plug is in a plugging position and a peripheral annular rim. The plug seal can include a plurality of holes or a continuous channel formed into the surface of the planar front surface, or a plurality of holes or a continuous channel formed into the surface of the peripheral annular rim, or both. The plug seal holes or channels impart a degree of flexibility to a peripheral area of the plug seal to facilitate the insertion and removal of the drainpipe test plug from the drainpipe. In addition, the holes or channel in the planar front surface provide additional sealing force against the interior of the drainpipe whenever the drainpipe test plug is in the plugging position.