Fluid handling – Convertible – Units interchangeable between alternate locations
Patent
1987-04-13
1988-01-12
Schwadron, Martin P.
Fluid handling
Convertible
Units interchangeable between alternate locations
1375991, 137613, F17D 303
Patent
active
047184485
ABSTRACT:
A gas valve for providing two levels of flow capacity to a burner is adapted to enable easy conversion of the valve from use with one type of gas to use with another type. To this end, a low-flow passageway, which establishes the low-flow capacity, is sized to provide the desired low-flow capacity when the valve is used with one type of gas. An opening, axially aligned with the passageway, receives a screw means which simply prevents the escape of gas to the exterior of the valve. When the valve is to be converted to use with another type of gas having a higher BTU content, the pressure regulator and burner orifice screw are changed, and the screw means in the axially aligned opening is replaced with a metering screw means which, in addition to preventing the escape of gas, has a portion which extends into the low-flow passageway so as to reduce the effective opening area of the low-flow passageway.
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"White-Rodgers Technical Sales Bulletin", Bulletin No. 188, dated Mar. 30, 1973, p. 8.
Fernstrom Carl F.
Love John J.
Becker, Sr. Paul A.
Emerson Electric Co.
Hepperle Stephen M.
Schwadron Martin P.
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