Flexible penetration fitting

Pipe joints or couplings – Pipe to discreet nipple or sleeve to plate – Plate clamped between flanged nipple and separate fastener

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Details

2851393, 28514825, 285192, 285236, F16L 304

Patent

active

059886986

ABSTRACT:
A flexible penetration fitting is provided for sealing the hole through which a pipeline penetrates a wall of an underground containment box. The penetration fitting includes a flexible boot with a sealing flange for providing a first seal against the inside wall of the box. The sealing flange is held against the wall by a backing ring placed against the outside wall of the box. The backing ring includes a plurality of studs extending through the wall and into the box. A compression ring with a plurality of holes is placed over the sealing flange with the studs of the backing ring extending though the holes. A plurality of nuts are threaded to the studs to hold the sealing flange firmly against the inside wall of the box. The flexible boot also includes a sleeve for providing a second seal against the outside surface of the pipeline. The sleeve is stepped with different sized openings so as to be able to receive different sizes of pipelines. A hose clamp placed around the sleeve at the appropriate sized opening seals the sleeve against the pipeline.

REFERENCES:
patent: 1015180 (1912-01-01), Heitman
patent: 2953618 (1960-09-01), Buono et al.
patent: 4211423 (1980-07-01), Resech
patent: 4480860 (1984-11-01), Foresta et al.
patent: 5027665 (1991-07-01), Hayward
patent: 5129684 (1992-07-01), Lawrence et al.
patent: 5226681 (1993-07-01), Smith et al.
patent: 5297896 (1994-03-01), Webb
patent: 5366318 (1994-11-01), Brancher
Containment Technologies Corporation, PERMA-FLEXX.TM. (4 pages).
Environ Products, Inc., Environ Safe Products designed for future generations, (12 pages).
Total Containment, U.S. Price Manual, Publication No. PM1500, Effective Date Apr. 1, 1995, Supersedes May 1, 1994 (pp. 1-34).

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