Claims
- 1. A valve member for a valve assembly for mixing hot and cold water including:a rotable non-reciprocal valve member positioned within said valve assembly to control the mixture of hot and cold water, said valve member including a hollow stem tube having hot and cold water inlet and outlet ports therein and a sealless reciprocally movable pressure balancing spool positioned within said stem tube, said stem tube including at least one wear plate receiving area, said spool and stem tube providing two spaced chambers, said stem tube cold water inlet and outlet ports opening into one chamber and said stem tube hot water inlet and outlet ports opening into the other chamber, with a portion of said chamber walls forming balancing surfaces such that said spool provides for balancing of pressures between the hot and cold water inlet ports; and at least one wear plate disposed on said at least one wear plate receiving area, said at least one wear plate being in fluid communication with at least one of said stem tube hot and cold water inlet and outlet ports.
- 2. The valve member of claim 1 wherein said at least one wear plate receiving area is circumferentially disposed on said stem tube.
- 3. The valve member of claim 1 wherein said wear plate receiving area includes at least one recessed portion.
- 4. The valve member of claim 1 wherein said wear plate is fixed against axial and rotational movement in relation to the stem tube.
- 5. The valve assembly of claim 1 wherein said wear plate receiving area includes at least one notch.
- 6. The valve member of claim 1 wherein said at least one wear plate is positioned on said stem tube adjacent at least one of said stem tube hot and cold water inlet ports.
- 7. The valve member of claim 1 wherein said at least one wear plate includes openings which correspond to respective stem tube hot and cold water inlet ports.
- 8. The valve member of claim 1 wherein said stem tube is made of a non-metallic material.
- 9. The valve member of claim 1 wherein said wear plate is made of metal.
- 10. The valve member of claim 1 further including a stem driver which controls rotable movement of said stem tube.
- 11. The valve member of claim 10 wherein said stem driver includes serrations for attachment of said stem driver to said stem tube.
- 12. The valve member of claim 10 wherein said stem driver includes a swaged portion for attachment of said stem driver to said stem tube.
- 13. The valve member of claim 10 wherein said stem driver includes an annular skirt for attachment of said stem driver to said stem tube.
- 14. A valve assembly for mixing hot and cold water including:a generally cylindrical sleeve having axially spaced and radially non-aligned hot and cold water inlets in the side thereof, axially spaced and radially non-aligned hot and cold outlets in said sleeve located peripherally of said inlets; a rotable non-reciprocal valve member positioned within said sleeve to control the mixture of hot and cold water, said valve member including a hollow stem tube having hot and cold water inlet and outlet ports therein and a sealless reciprocally movable pressure balancing spool positioned within said stem tube, said stem tube including at least one wear plate receiving area, said spool and stem tube providing two spaced chambers, said stem tube cold water inlet and outlet ports opening into one chamber and said stem tube hot water inlet and outlet ports opening into the other chamber, with a portion of said chamber walls forming balancing surfaces such that said spool provides for balancing of pressures between the hot and cold water inlet ports; and at least one wear plate disposed on said at least one wear plate receiving area, said at least one wear plate being in fluid communication with at least one of said stem tube hot and cold water inlet and outlet ports.
PRIORITY CLAIM
This is a continuation application of U.S. application Ser. No. 10/071,642, which was filed on Feb. 7, 2002 now abandoned.
US Referenced Citations (4)
Number |
Name |
Date |
Kind |
3923077 |
Scaglione |
Dec 1975 |
A |
4130136 |
Garnier et al. |
Dec 1978 |
A |
5623966 |
Rodger |
Apr 1997 |
A |
6427713 |
Dempsey et al. |
Aug 2002 |
B1 |
Continuations (1)
|
Number |
Date |
Country |
Parent |
10/071642 |
Feb 2002 |
US |
Child |
10/369030 |
|
US |