Abstract: An impeller assembly including a shroud and an impeller body. The shroud has an inner surface flaring outwardly from an inlet toward an outlet. The impeller body extends into the shroud. The impeller body has an eccentric apex that is connected to an inner surface of the shroud proximate an upstream edge of the inlet.

Abstract: A cutting blade assembly including a cutting plate, a plurality of cutting slots formed in the cutting plate, and a cutting hub. The cutting plate includes an axial face and a central opening. The plurality of cutting slots are circumferentially spaced about the central opening. Each of the plurality of cutting slots intersects the axial face and defines a respective axial cutting edge at an intersection of each of plurality of cutting slots and the axial face. Each of the plurality of cutting slots defines a base surface that is nonparallel to the axial face. The cutting hub is positioned in the central opening and has a cutting arm adjacent to the axial face.

Abstract: A probe for a closed transfer system, the probe including a probe body and a probe tip. The probe body defines an inlet, an outlet, and a plurality of channels. The outlet is in fluid communication with the inlet via at least one of the plurality of channels. The probe tip is located at a top end of the probe body and defines a first passageway. The first passageway is in fluid communication with at least one of the plurality of channels. The probe body is configured to be slidably moveable within a coupler body between a first position where the probe tip is received within the coupler body and a second position where the probe tip extends at least partially away from the coupler body to open a fluid flow path through the coupler body.

Abstract: A probe assembly for a closed transfer system is provided. The probe assembly includes a base having a base air inlet, a probe having a base end and a probe end, at least one primary valve positioned at the probe tip, and at least one secondary valve. The probe defines a hollow air channel extending from the base end to the probe end including a probe tip, the base end being coupled to the base such that the hollow air channel is in fluid communication with the base air inlet and the probe tip. The at least one secondary valve is positioned at the base air inlet and configured to selectively allow air into the hollow air channel.

Abstract: A fish-friendly centrifugal pump having an impeller. The impeller includes a base that is concentric relative to a rotational axis of the impeller and an impeller body formed as at least one oblique cone having an eccentric apex and a smooth outer surface. The at least one oblique cone extends from the base.

Abstract: A method is provided for controlling a pump driven by a motor with the motor connected to a drive. The method can include determining a parameter value related to a fault condition, comparing the parameter value to a threshold value, and adjusting a speed control of the drive based on the comparison of the determined parameter to the threshold value.

Abstract: Systems for monitoring a sump pump are provided. A system includes a power adapter designed to receive power from a power source. The power adapter is provided in the form of a controller establishing a wireless connection a wireless network and a housing having a first receptacle and a second receptacle. The first receptacle and the second receptacle are designed to accept a float-switch input and a sump pump input, respectively. The float-switch input and the sump pump input are electrically coupled to controller and the power source when accepted by the first receptacle and the second receptacle, respectively.

Abstract: A self-priming assembly for a multi-stage pump is provided. The self-priming assembly includes a first diffuser with a first central portion, a first diffuser axis, a first arcuate channel within the first central portion, and a first arcuate passage extending through the first central portion and a first peripheral portion having a first ledge. The self-priming assembly also includes a second diffuser with a second central portion, a second diffuser axis, a second arcuate channel within the second central portion, a second arcuate passage extending through the second central portion, and a second peripheral portion having a second ledge. The first ledge abuts the second ledge. Further, the self-priming assembly includes an impeller with an impeller axis. The first diffuser and the second diffuser are configured to be combined and to receive the impeller therebetween with the first diffuser axis, the second diffuser axis, and the impeller axis aligned.

Abstract: A coupler for use in a closed transfer system is provided. The coupler includes a body with an axial slot, an outlet, and a probe that extends from a first end portion to a second end portion and at least partially received within the body, the probe configured to be movable relative to the body between a first position and a second position to selectively control the flow of fluid through the outlet. A handle is coupled to the probe and configured to interface with the axial slot, wherein the handle is configured to move axially along the axial slot to move the probe between the first position and the second position.

Abstract: A chemical transfer coupler including an inlet, an outlet, a chemical flow chamber fluidly connecting the inlet and the outlet, and a probe. The probe extends through the chemical flow chamber and includes a rinse aperture, a probe end fitting, and a first recessed slot. The probe end fitting includes a first end, a second end, and an outer surface. The first recessed slot extends helically along the outer surface from the first end to the second end. The chemical flow chamber fluidly couples the rinse aperture and the outlet. The first recessed slot is positioned at least partially along a flow path extending between the rinse aperture and the outlet.

Abstract: A brush ring assembly including a brush ring, a brush holder coupled to the brush ring, and a brush spring. The brush spring includes a coiled spring body, a first end portion and a second end portion. The first end portion and the second end portion are disposed on opposing ends of the spring body. The first end portion, the second end portion, and the coiled spring body are coupled to the brush holder. The first end portion is bent across at least a portion of the coiled spring body in a direction toward the second end portion.

Abstract: A pump comprising an impeller having a hub base and an impeller body. The impeller body comprises a base which is concentric relative to a rotational axis of the impeller, and at least one eccentric apex.

Abstract: Systems and methods for monitoring operation of a sump pump are provided. A method includes connecting a power adapter to the sump pump and a float-switch. The power adapter includes a controller positioned within a housing, prongs in communication with components coupled to the controller, a first receptacle and a second receptacle. The controller is configured to establish a wireless connection to a first wireless network, and transmit a message to a remote server over the first wireless network. The controller is further configured to determine a power status of a float switch and control the pump based on power status of the float switch.

Abstract: A probe assembly configured to selectively restrict fluid flow through an outlet of a closed transfer system. The probe assembly has an elongate probe body with a top end portion, a bottom end portion, an outer wall, and an internal structure defining a fluid chamber extending from the bottom end portion to the top end portion. The fluid chamber has a fluid chamber inlet at the bottom end portion extending through the outer wall into the fluid chamber and a fluid chamber outlet at the top end portion extending from the fluid chamber through the outer wall. A probe tip with a cylindrical bore is configured to engage the top end portion of the elongate probe body and a probe tip outlet is configured to be in fluid communication with the fluid chamber outlet. A rotating head located circumjacent to the probe tip and adjacent to the probe tip outlet is configured to rotate about the probe tip.

Abstract: Embodiments of the invention provide an electrically-powered submersible pump. The pump has a pump housing, a ring-style terminal block including an annular component having a plurality of terminals, a motor contained within the pump housing, and a power source in communication with at least one of the plurality of terminals. Each of the plurality of terminals is spaced apart about the annular component and at least one terminal of the plurality of terminals extends outwardly from the annular component. The motor in communication with at least one of the plurality of terminals.

Abstract: A cutting blade assembly establishes a bidirectional and/or multifaceted scissor-type cutting action to efficiently and effectively process various types of debris encountered by the cutting blade assembly. The assembly includes a cutting plate and a cutting hub configured for relative rotation. A cutting slot is formed in the cutting plate and intersects the axial face to define a cutting edge at the intersection of the cutting slot and the axial face. The cutting hub has a cutting arm positioned adjacent to the axial face. When the cutting plate and the cutting hub undergo relative rotation, the cutting arm passes adjacent to the cutting edge to perform a scissor-type cutting action.

Abstract: A chopper pump including a drive section having a drive shaft, and a housing coupled to the drive section and having an inlet, an outlet, and an internal cavity arranged between the inlet and the outlet. The chopper pump further includes an impeller received within the internal cavity and coupled to the drive shaft for rotation therewith. The impeller includes a recess formed therein. The chopper pump further includes a cutting insert received within the recess of the impeller. The cutting insert includes a cutting groove axially recessed into the cutting insert. The chopper pump further includes a cutting plate coupled to the housing within the internal cavity. The cutting plate includes a cutting extension that extends radially inward. Rotation of the impeller rotates the cutting blade past the cutting extension.

Abstract: A self-priming assembly for a multi-stage pump is provided. The self-priming assembly can have a first diffuser, a second diffuser, and an impeller. The first and second diffusers each include a central portion, a diffuser axis, an arcuate channel within the central portion, and a passage extending through the central portion. The first diffuser and the second diffuser are configured to be combined and receive the impeller therebetween with the first diffuser axis, the second diffuser axis, and the impeller axis aligned.

Abstract: A variable frequency drive system and a method of controlling a pump driven by a motor with the pump in fluid communication with a fluid system is provided. The method includes monitoring a pressure in the fluid system, monitoring and adjusting an operating frequency of the motor to maintain the pressure at a pressure set point, and, based on the monitored operating frequency, causing the pump to temporarily boost the pressure in the fluid system to a temporary boost set point for a first time period. The method also includes determining whether the temporarily boosted pressure in the fluid system stays above the pressure set point for a second time period and causing the pump to enter a sleep mode when the temporarily boosted pressure stays above the pressure set point through the second time period.