Fluid handling – Line condition change responsive valves – Pilot or servo controlled
Patent
1986-06-11
1987-11-17
Schwadron, Martin P.
Fluid handling
Line condition change responsive valves
Pilot or servo controlled
137599, F16K 31385
Patent
active
047067047
ABSTRACT:
A fuel control valve construction, parts therefor and methods of making the same are provided, the construction having a housing provided with an inlet adapted to be interconnected to a fuel source and an outlet adapted to be interconnected to a burner. The housing has a main pressure regulator and a main valve operated by the main pressure regulator for controlling fuel flow from the inlet to the outlet to provide a full rated flow of fuel to the burner. The housing has a by-pass for interconnecting the inlet to the outlet to provide a fuel flow to the burner that is less than a full rated flow of fuel but is sufficient by itself to support combustion at the burner until the main valve provides the full rated flow of fuel thereto. The housing has a by-pass pressure regulator for controlling the flow of fuel through the by-pass independently of the operation of the main pressure regulator.
REFERENCES:
patent: 2694407 (1954-11-01), Jobson
patent: 3528452 (1970-09-01), Willson
patent: 3552430 (1971-01-01), Love
patent: 3749120 (1973-07-01), Love et al.
patent: 3776268 (1973-12-01), Visos et al.
patent: 4060370 (1977-11-01), Fleer
patent: 4549571 (1985-10-01), Kelly
Hepperle Stephen M.
Robertshaw Controls Company
Schwadron Martin P.
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