Valve stem protection system

Details Valve stem protection system Valve stem protection system

2008-04-08

2008-04-08

Lee, Kevin (Department: 3753)

Fluid handling

Processes

Cleaning, repairing, or assembling

C137S312000, C137S240000

Reexamination Certificate

active

11335364

ABSTRACT:
An improved stem protector system for valves including an assembly, preferably a sleeve assembly, structured and sized for surrounding a valve stem and for mating with a valve stem actuator, the assembly including at least one port system, the at least one port system having at least one port structure to pass lubricant from outside to inside the system and at least one drainage port to pass water from inside to outside the system. Preferably the lubricant port(s) and the water drainage port(s) are separate.

REFERENCES:
patent: 4429591 (1984-02-01), Zuch
patent: 4863101 (1989-09-01), Pater et al.
patent: 5503180 (1996-04-01), Nimberger
patent: 6424928 (2002-07-01), Elliott et al.
patent: 6577985 (2003-06-01), Scalf
patent: 6615156 (2003-09-01), Elliott et al.

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