Flushable Sondes — 512 Hz, 223 kHz & 8 kHz
Prototek’s Flushable Sondes are the product of more than 30 years refining a floating, flushable transmitter. You simply flush the sonde into the line and track it from the surface with a compatible receiver — an ideal way to locate and trace blockages or pipe runs without access to the pipe itself.
Three frequencies cover the full range of materials. The FTP-8 runs at 512 Hz for cast-iron and non-metallic lines; the ATP-12 uses 223 kHz for non-metallic pipe; and the HTP-15 is an 8 kHz multi-frequency sonde with the longest non-metallic range in the family.
Every flushable shares the same compact, sealed body — 2-1/4″ long and just 0.8 oz — sized for lines 3″ and up. Batteries are sealed in for a clean, maintenance-free unit built to be flushed.
| FTP-8 | 512 Hz (cast iron + non-metallic), 512 Hz Sonde receiver |
|---|---|
| ATP-12 | 223 kHz (non-metallic) |
| HTP-15 | 8 kHz (non-metallic), Multi Frequency Sonde receiver |
| FTP-8 | ~8 ft in cast iron, ~12 ft in non-metallic |
|---|---|
| ATP-12 | ~12 ft in non-metallic (not cast-iron compatible) |
| HTP-15 | ~15 ft in non-metallic (not cast-iron compatible) |
| Dimensions | 2-1/4" L x 1-3/16" W x 1" H |
|---|---|
| Weight | 0.8 oz |
| Minimum line size | 3" |
| Batteries | Sealed, not replaceable |
| Best use | Flushed down the line |
Interested in the Flushable Transmitters?
Request pricing, availability, or a hands-on demo from our team.
