Multi-port rotary valve

1. A valve comprising:

a valve housing including

a sidewall having an open first end and an open second end that is opposite the first end,

a detachable lid that closes the first end of the sidewall,

a base that is disposed at the second end of the sidewall and is perpendicular to the sidewall, the base, the lid and the sidewall cooperating to define a chamber,

chamber walls that segregate the chamber into subchambers that each provide a portion of a fluid path through the valve housing,

valve ports, each valve port communicating with the chamber, and

at least one valve port communicating with each subchamber;

a diverter assembly disposed in the chamber, the diverter assembly configured to control fluid flow through the valve housing, the diverter assembly including a shaft that extends through an opening in the valve housing, the shaft being rotatable about a rotational axis that is parallel to the sidewall; and

a seal assembly disposed in the chamber so as to be aligned along the rotational axis with the diverter assembly,

wherein the subchambers comprise a cylindrical first subchamber that is centered on the rotational axis, and a second subchamber that is disposed radially outward with respect to the first subchamber.

2. The valve of claim 1 , wherein

the diverter assembly and the seal assembly are disposed in the first subchamber.

3. The valve of claim 2 , wherein for a specific rotational orientation of the diverter assembly with respect to the valve housing,

a fluid path between valve ports of the valve housing includes

a first path portion that is disposed in the first subchamber and extends axially through the diverter assembly and the seal assembly, and

a second path portion that is disposed in the second subchamber.

4. The valve of claim 3 , wherein the fluid path passes through a portion of the lid.

5. The valve of claim 1 , wherein

each of the first subchamber and the second subchamber extends between the sidewall first end and the sidewall second end.

6. The valve of claim 1 , wherein for a specific rotational orientation of the diverter assembly with respect to the valve housing, a fluid path between valve ports of the valve housing bypasses the diverter assembly.

7. The valve of claim 6 , wherein the fluid path is disposed radially outward with respect to the diverter assembly.

8. The valve of claim 1 , wherein

the subchambers comprise a third subchamber that is disposed radially outward with respect to the first subchamber, and

for a specific rotational orientation of the diverter assembly with respect to the valve housing,

a first portion of a first fluid path between valve ports of the valve housing is disposed in the first subchamber and passes through the diverter assembly,

a second portion of the first fluid path is disposed in the second subchamber and bypasses the diverter assembly,

a first portion of a second fluid path between valve ports of the valve housing is disposed in the third subchamber and bypasses the diverter assembly, and

a second portion of the second fluid path is disposed in the first subchamber and passes through the diverter assembly.

9. The valve of claim 8 , wherein the first portion of the first fluid path is segregated from the second portion of the second fluid path.

10. The valve of claim 1 , wherein

the subchambers comprise a third subchamber that is disposed radially outward with respect to the first subchamber, and

for a specific rotational orientation of the diverter assembly with respect to the valve housing, a first portion of a first fluid path between valve ports of the valve housing is disposed in the second subchamber and bypasses the diverter assembly, and

a second portion of the first fluid path is disposed in the third subchamber and bypasses the diverter assembly.

11. The valve of claim 10 , wherein

a third portion of the first fluid path is defined by the diverter assembly which directs fluid between the first portion and the second portion.

12. The valve of claim 11 , wherein

the third portion of the first fluid path includes at least two changes in direction.

13. A fluid delivery system, comprising:

a fluid pump; and

a multi-port rotary valve connected to the fluid pump via a fluid line, the rotary valve including

a valve housing having

a sidewall having an open first end and an open second end that is opposite the first end,

a detachable lid that closes the first end of the sidewall,

a base that is disposed at the second end of the sidewall and is perpendicular to the sidewall, the base, the lid and the sidewall cooperating to define a chamber,

chamber walls that segregate the chamber into subchambers that each provide a portion of a fluid path through the valve housing,

valve ports, each valve port communicating with the chamber, and

at least one valve port communicating with each subchamber;

a diverter assembly disposed in the chamber, the diverter assembly configured to control fluid flow through the valve housing, the diverter assembly including a shaft that extends through an opening in the valve housing, the shaft being rotatable about a rotational axis that is parallel to the sidewall; and

a seal assembly disposed in the chamber so as to be aligned along the rotational axis with the diverter assembly,

wherein the subchambers comprise a cylindrical first subchamber that is centered on the rotational axis, and a second subchamber that is disposed radially outward with respect to the first subchamber.