Abstract

A valve rod isolation apparatus for reducing valve rod exposure to moisture and debris in a subsurface environment, wherein the valve rod is housed within an isolation sleeve that is sealed top and bottom.

IPC Classes  ?

• F16L 5/00 - Devices for use where pipes, cables or protective tubing pass through walls or partitions
• E03B 7/07 - Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons, valves, in the pipe systems
• E03B 9/18 - Cleaning tools for hydrants

Abstract

An actuation assembly for a subsurface valve, the valve accessible by a hole extending from ground level, the assembly having: a valve rod with a top end and a bottom end, the top end engageable by a wrench, the bottom end connected to a bottom nut, the bottom nut connected to the valve so that rotation of the valve rod by the wrench actuates the valve; an isolation sleeve; an upper seal retained in an upper portion of the isolation sleeve; a lower seal retained in a lower portion of the isolation sleeve; the upper and lower seals provided with apertures and the valve rod received through the apertures, the top end of the valve rod extending above the upper seal and the bottom end of the valve rod extending below the lower seal; and the isolation sleeve and the lower seal abutting the bottom nut.

IPC Classes  ?

• F16K 31/46 - Mechanical actuating means for remote operation
• E03B 7/07 - Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons, valves, in the pipe systems
• E03B 9/00 - Methods or installations for drawing-off water
• F16K 41/00 - Spindle sealings