Underground sprinkler system and methods for winterizing and ins

Details Underground sprinkler system and methods for winterizing and ins Underground sprinkler system and methods for winterizing and ins

1993-05-04

1994-10-18

Schwadron, Martin P.

Fluid handling

Processes

137357, 251293, 239569, 239580, F16L 500, F16K 3146

Patent

active

053559053

ABSTRACT:
A winterizing system (10) for underground sprinkler systems which can be newly installed during the sprinkler system installation, or can be utilized as a retrofit design, having a single valve means (13) and a drive shaft (19) to allow winterization completely from the exterior of building structure (50). Drive shaft (19), which may be flexible for most retrofit installations, is mounted such that it is accessible from the exterior. Upon manipulation of drive shaft (19) inlet port (14) and drain port (16), with connected drain line (24), can be opened and closed by a technician without entrance into building structure (50). Additional features include backflow prevention devices, tamper-proof drive shaft keys, and special connectors.

REFERENCES:
patent: 1443231 (1923-01-01), McCauley
patent: 2198455 (1940-04-01), Mueller et al.
patent: 3954250 (1976-05-01), Grace
patent: 4022243 (1977-05-01), Edwards
patent: 4066090 (1978-01-01), Nakajima et al.
patent: 4117856 (1978-10-01), Carlson
patent: 4809732 (1989-03-01), Buehler
patent: 5004157 (1991-04-01), Martell
Cross Connection Control Handbook; Febco; Water Systems, Inc.; 1977; pp. 1-12.
Backflow Prevention Assemblies; Febco; Water Systems, Inc.; Dec., 1991.
78-664/666 Series; Standard Port Bronze Apollo with Center Drain; 76-668 The 3/4" Bronze Purge & Drain Ball Valves.

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