Stock components
Parts catalog
Four families of stock parts, all available in commodity and engineering resins. Specifications are listed in full on each page.
RDF-2211 / 2221 / 2225
Mini stems
Threaded mini stems with a standard C-clip or an integral clip, reversible floats for normally open or normally closed, and an O-ring seal option on the 3/8-16 thread.
SpecificationsRDF-2205 / 2206 / 3500 SERIES
Floats and stems
Foamed polypropylene floats at 3/4 and 1 inch diameter, closed end polypropylene tube, slosh shields, intermediate float stops and end caps for 5/16 inch tube.
SpecificationsRDF-5001 / 5011 / 5012
Side mounts
Side mount bodies in 1/2-13 NC and in single or double 1/2 NPT, with a hollow magnet float that installs through a 5/8 inch hole.
SpecificationsRDF-4000 SERIES
Continuous level
Large tank fittings to 2 inch NPT, WEMA style flanges, 100 percent waterproof overmolded cable, float stops and the larger foamed floats.
SpecificationsMaterials and threads
These apply across the catalog. Individual parts may not offer every option, so the part page is the authority.
| Material | Typical use |
|---|---|
| Polypropylene | Standard floats and stems, water and general service |
| Acetal | Dimensional stability, low friction, threaded parts |
| Nylon | Diesel and fuel oil floats |
| PBT | Higher temperature and chemical resistance |
| PVDF | Aggressive chemical service |
| PVC | General service, tube and pipe interfaces |
| Thread | Where |
|---|---|
| 1/8 NPT | Mini stems |
| 3/8-16 NC | Mini stems, O-ring seal option |
| 1/2-13 NC | Side mount body RDF-5011 |
| 1/2 NPT | Side mount body RDF-5012, single or double |
| 3/8 NPT | Continuous level hex, overmolded cable |
| 1 1/2 and 2 NPT | Large tank fitting RDF-4001 |
Do not see your thread?
Additional threads have been in development and their status needs confirming before we publish them. Call and ask about a specific size rather than assuming from this page.
Not in the catalog?
We are constantly working on new designs. If you do not see what you need, please ask. If you have a concept you would like to see in production, please call. Most parts are available in both commodity and engineering resins, and floats can be molded to any density above the published minimum.
If the part genuinely has to be yours alone, that is custom work and our parent company handles it. Mold Threads, Inc. builds the mold and molds the part in the same building.
