Model B
Ford Garage
Zenith Carburetor Float Valve Orifice Details
Model B Zenith carburetors used the B-9564 fuel float level needle valve. Each original float valve was marked with a number to designate the orifice size. The standard Model B valve was a '44'.
The original Ford / Zenith carburetor valve number found stamped on the valve is the orifice size as expressed in 0.05 mm increments. For example, a valve marked number '44' has an orifice diameter of (44)*(0.05) = 2.2 mm = 0.0866 inches.
Zenith made a whole series of carburetors based on the Model B designs and component sets for other manufacturers, and there are a variety of valves found which look similar but which are not the correct size for the Model B.
The table below shows the orifice sizes for various original Zenith Model B valves encountered, as well as some replacement valves. Beware of using float valves having opening sizes that are too small.
Model B Zenith Carburetor ~ Valve Orifice Sizes
| B-9564 Float Valve | Number Size |
Orifice Diameter (inches) |
|---|---|---|
| Zenith - Standard Model B with fuel pump |
44 | 0.0866 |
| Zenith - other apps | 45 | 0.0886 |
| Zenith - For use on Model A with gravity feed |
54 | 0.1063 |
| Zenith - other apps | 55 | 0.1093 |
| Stipe - ball type | ~ | 0.0955 |
More related information on Ford Garage:
- For more Model A & B related information, use the Site Search box at the top or bottom of this page.
- Model A & B Zenith Carburetor Jet Sizes & Flow Rates
- Model B & 46 Zenith Carburetor Parts Catalog Illustrations
- Model B & 46 Zenith Carburetor Assembly Drawings
- Model B & 46 Zenith Carburetor Float Details
- Model B & 46 Zenith Carburetor Power Jet Circuit
- Model B & 46 Zenith Carburetor Power Jet Tube
- Model B & 46 Zenith Carburetor Power Jet Tube Instructions
- Model B & 46 Zenith Carburetor Catalog Data
- Model B & 46 NOS Zenith Carburetor
- Model B & 46 Zenith Carburetor Upper Casting Variations
July 2015