Fluid handling – Line condition change responsive valves – With separate connected fluid reactor surface
Patent
1980-05-23
1982-01-26
Nilson, Robert G.
Fluid handling
Line condition change responsive valves
With separate connected fluid reactor surface
137536, 137540, 251282, F16K 1506
Patent
active
043123767
ABSTRACT:
The invention contemplates a valve having particular application to the control of flow and pressure within a sanitary-sewer system which includes independently pumped feeders at elevations below an intervening region of greater elevation. The valve, located at the downstream side of the region, of greater elevation, and below the elevation of pumping on the upstream side of the region of greater elevation, provides (a) such a minimum level of pressure at its inlet as to assure against syphoning liquid sewage out of the greater-elevation region, (b) a reduction in hydraulic-head pressure for liquid sewage passed by the valve to the succeeding downstream region of lower elevation, and (c) such balanced response to excessive downstream-region pressure development as to prevent any development of upstream flow through the valve, i.e., such balanced response as to prevent changes in upstream pressure level with fluctuating downstream pressure level.
REFERENCES:
patent: 1998056 (1935-04-01), Naatz
patent: 2230718 (1941-02-01), Gannestad
patent: 2326462 (1943-08-01), Johnson
patent: 2499527 (1950-03-01), Raymond
patent: 3756558 (1973-09-01), Okui
Nilson Robert G.
Transamerica DeLaval Inc.
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