Abstract: A bypass valve comprising a valve body, a valve member, and a valve seat. The valve body has a first end, a second end, a central axis therebetween, an inlet formed through the first end, a valve channel, and an outlet channel extending from the valve channel to an outer surface of the valve body. The valve channel has a first end in fluid communication with the inlet, a second end terminating within the valve body, and a central channel axis therebetween which is axially aligned with the central axis. The valve member is substantially-spherical and movably disposed within the valve channel. The valve seat is disposed adjacent the first end of the valve channel. The valve seat has an orifice defined therethrough. The valve member is movable between a first position, engaging the valve seat to substantially seal the orifice, and a second position adjacent the second end of the valve channel to permit fluid to flow through the orifice.

Abstract: A bypass valve comprising a valve body, a valve member, and a valve seat. The valve body has a first end, a second end, a central axis therebetween, an inlet formed through the first end, a valve channel, and an outlet channel extending from the valve channel to an outer surface of the valve body. The valve channel has a first end in fluid communication with the inlet, a second end terminating within the valve body, and a central channel axis therebetween which is axially aligned with the central axis. The valve member is substantially-spherical and movably disposed within the valve channel. The valve seat is disposed adjacent the first end of the valve channel. The valve seat has an orifice defined therethrough. The valve member is movable between a first position, engaging the valve seat to substantially seal the orifice, and a second position adjacent the second end of the valve channel to permit fluid to flow through the orifice.

Abstract: A discharge valve comprising a valve body, a valve member, and a valve seat. The valve body has a first end; a second end; a central axis therebetween; an inlet formed through the first end; a flow channel extending from the inlet to the second end; a valve channel extending from the inlet and terminating within the valve body; and at least one discharge port extending from the valve channel to an outer surface of the valve body. The valve member is substantially-spherical and movably disposed within the valve channel. The valve seat is disposed adjacent the first end of the valve channel. The valve seat has an orifice defined therethrough The valve member is movable between a first position, engaging the valve seat to substantially seal the orifice, and a second position adjacent the second end of the valve channel to permit fluid to flow through the orifice.

Abstract: A pump comprising a body assembly and a plunger assembly slidably received in the body assembly. The body assembly comprises a standing valve, a discharge valve, and a pump barrel cooperating to define a pump chamber. The standing valve opens to permit fluid to flow into the pump chamber from outside the tubing responsive to a negative pressure gradient across the standing valve. The discharge valve opens to permit fluid to flow out of the pump chamber and into the tubing responsive to a positive pressure gradient across the discharge valve.

Abstract: A discharge valve comprising a valve body, a valve member, and a valve seat. The valve body has a first end; a second end; a central axis therebetween; an inlet formed through the first end; a flow channel extending from the inlet to the second end; a valve channel extending from the inlet and terminating within the valve body; and at least one discharge port extending from the valve channel to an outer surface of the valve body. The valve member is substantially-spherical and movably disposed within the valve channel. The valve seat is disposed adjacent the first end of the valve channel. The valve seat has an orifice defined therethrough The valve member is movable between a first position, engaging the valve seat to substantially seal the orifice, and a second position adjacent the second end of the valve channel to permit fluid to flow through the orifice.