Filtration assemblies and methods of installing filtration units in filtration assemblies

1. A filtration assembly comprising:

first and second end pieces;

a manifold positioned between the first and second end pieces, the manifold having fluid passages;

at least one filtration unit having fluid passages and being positioned between one of the end pieces and the manifold; and

at least one alignment rod arrangement positioned to align the filtration unit or units between the end pieces with the fluid passages in the fluid treatment unit fluidly communicating with the fluid passages in the manifold, the alignment rod arrangement including an alignment rod mounted between the end pieces to slide longitudinally along one end piece and away from the other end piece.

2. The filtration assembly according to claim 1 wherein the alignment rod arrangement includes at least first and second components removably attachable to one another between the end pieces, the alignment rod being one of the first and second components.

3. A filtration assembly according to claim 2 , wherein the first component includes a first fitting and the second component includes a second fitting, the first and second fittings being releasably connectable to one another.

4. A filtration assembly according to claim 3 , wherein one of the fittings has a male design and the other fitting has a corresponding female socket design which receives the male design.

5. A filtration assembly according to claim 2 , wherein the alignment rod arrangement has a consistent diameter between the end pieces.

6. A filtration assembly according to claim 1 , wherein the filtration unit has an exterior and the alignment rod arrangement extends along the exterior of the filtration unit.

7. A filtration assembly according to claim 1 , wherein each of the first and second end pieces comprises an end plate.

8. The filtration assembly of claim 1 , wherein one of the end pieces includes a fitting and wherein the alignment rod includes a fitting, the fittings of the end piece and the alignment rod being releasably connected to one another.

9. The filtration assembly of claim 1 , wherein the alignment rod arrangement further includes a component having a fitting and wherein the alignment rod has a fitting, the fittings of the component and the alignment rod being releasably connected to one another between the end pieces.

10. A filtration assembly comprising:

first and second end pieces;

a manifold positioned between the first and second end pieces, the manifold having fluid passages;

at least one filtration unit having fluid passages and being positioned between one of the end pieces and the manifold; and

at least one alignment rod arrangement positioned to align the filtration unit or units between the end pieces with the fluid passages in the fluid treatment unit fluidly communicating with the fluid passages in the manifold, the alignment rod arrangement including an alignment rod mounted to move laterally between the end pieces.

11. A filtration assembly according to claim 10 , wherein the alignment rod arrangement comprises first, second, and third components coupled to one another between the end pieces, the alignment rod being one of the first, second, and third components.

12. A filtration assembly according to claim 11 , wherein the alignment rod is completely separable from one of the other two components.

13. A filtration assembly according to claim 11 wherein the alignment rod is completely separable from both of the other two components.

14. A filtration assembly according to claim 11 , wherein the first component includes a first fitting and the second component includes a second fitting, the first and second fittings being releasably connectable to one another.

15. A filtration assembly according to claim 14 , wherein the fittings comprise a slot in the first component and a bar on the second component that engages the slot.

16. A filtration assembly according to claim 11 , wherein the alignment rod arrangement has a consistent diameter between the end pieces.

17. A filtration assembly according to claim 10 , wherein the filtration unit has an exterior and the alignment rod arrangement extends along the exterior of the filtration unit.

18. A filtration assembly according to claim 10 , wherein each of the first and second end pieces comprises an end plate.

19. A method of installing a filtration unit into a filtration assembly comprising:

sliding an alignment rod longitudinally in one direction along one end piece and away from an opposed end piece;

installing at least one filtration unit having fluid passages between one of the end pieces and a manifold having fluid passages; and

sliding the alignment rod longitudinally in the opposite direction along the one end piece and toward the opposed end piece, including aligning the filtration unit or units along the alignment rod with the fluid passages in the fluid treatment unit fluidly communicating with the fluid passages in the manifold.

20. The method of claim 19 further comprising:

detaching the alignment rod from a second component of an alignment rod arrangement between the end pieces before sliding the alignment rod longitudinally in said one direction and

attaching the alignment rod to the second component after sliding the alignment rod in the opposite direction.

21. A method of installing a filtration unit into a filtration assembly comprising:

moving an alignment rod laterally away from first and second opposed end pieces;

installing at least one filtration unit having fluid passages between one of the end pieces and a manifold having fluid passages; and

moving the alignment rod laterally between the end pieces, including aligning the filtration unit or units along the alignment rod with the fluid passages in the fluid treatment unit fluidly communicating with the fluid passages in the manifold.

22. The method of claim 21 further comprising:

detaching the alignment rod from a second component of an alignment rod arrangement between the end pieces before moving the alignment rod laterally away from the first and second end pieces and

attaching the alignment rod to the second component after moving the alignment rod laterally between the end pieces.