Extended valve box and process for securing extension to valve b

Details Extended valve box and process for securing extension to valve b Extended valve box and process for securing extension to valve b

1983-02-11

1984-09-04

Schwadron, Martin P.

Fluid handling

Processes

Cleaning, repairing, or assembling

137370, 156 71, 156293, 404 26, F16L 500

Patent

active

044691157

ABSTRACT:
An extension is secured to a valve box in a roadway to be repaved by coating the valve box shoulder and the bottom of the extension with a thin layer of epoxy adhesive, placing a heated neoprene gasket on the shoulder, and setting the extension in place on the gasket. Heating makes the gasket pliable, and heat from the gasket assists in curing the adhesive. A curing-type liquid sealant is introduced into the space around the periphery of the extension to prevent the entry of water, salt and other corrodents.

REFERENCES:
patent: 380308 (1888-04-01), Barry, Jr.
patent: 2176399 (1939-10-01), Garrett
patent: 3455077 (1969-07-01), Long
patent: 3672383 (1972-06-01), Trimble et al.
patent: 4188151 (1980-02-01), Hall

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