Hydrant variable riser and restraint

Details Hydrant variable riser and restraint Hydrant variable riser and restraint

1986-08-08

1988-05-03

Schwadron, Martin P.

Fluid handling

Hydrant type

1372361, 137615, 285184, 285410, E03B 902

Patent

active

047413565

ABSTRACT:
A variable riser conduit for the adjustable vertical positioning of a fire hydrant both in conjunction with, and subsequent to, completing the hydrant installation. The riser conduit is formed of a housing which may be tubular, having a passageway therethrough and also having annular collars disposed around and adjacent each end margin of the passage. These collars cooperate with mating flanges on the shoe of the hydrant at one end and the water main or auxiliary valve at the other end to provide a water tight mechanically restrained joint when a split restraint collar is secured and tightened in place behind each annular collar. The ends of the passage are parallel and laterally offset or disposed one to another such that, when the restraint collar is loose or loosened, the riser conduit may be rotated with respect to both hydrant and water main. Because the water main is fixed within the ground, only the height of the hydrant is varied to a desired upright repositioning with respect to grade level before the split restraint collars are retightened.

REFERENCES:
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Title: Pipe Economy; Author: Clow Corporation; Date: 1975; Pages: Front Cover, p. 21 Index; pp. 49 and 79.
Title: Handbook, Ductile Iron Pipe/Cast Iron Pipe 4th Edition; Author: Cast Iron Pipe Research Association; Pages: Front Cover, pp. 416 and 46.

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