Flushable Transmitters for Sewer & Septic Line Locating

Pinpoint underground sewer lines, septic tanks, and nonmetallic utilities with professional-grade flushable transmitters. These sondes send a reliable signal through pipes and drainage systems, so you can locate, trace, and diagnose buried infrastructure without excavation.

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Flushable transmitter comparison
Model Frequency Works with Best for Shop link
FTP-8 512 Hz Digital LineFinder series, Ferris analog receiver Cast iron and nonmetallic lines, septic tanks View FTP-8
ATP-12 223 kHz [confirm receiver name] Nonmetallic lines and septic tanks View ATP-12
HTP-15 8 kHz LineFinder 2200 receiver Nonmetallic lines and septic tanks, and locations near power lines where interference is a concern View HTP-15

FTP-8 512Hz Flushable Sonde Transmitter for Pipe Locating FTP-8 | 512 Hertz Flushable Transmitter 

The FTP-8 flushable transmitter works in cast iron and nonmetallic lines along with septic tanks. The flushable transmitter uses the 512 Hz frequency and will work with our Digital LineFinder series along with the Ferris analog receiver.

  • Black On/Off push button

  • Floats for easy retrieval

  • Flashing LED indicates that the sonde is transmitting

  • Red LED will come on to indicate when the battery is no longer good

  • Batteries are not replaceable

  • Eyelet for easy attachment to a fishing line

FTP-8 512 Hz flushable sonde transmitter, a blue floating device for locating pipes and septic tanks.

ATP-12 Flushable Sonde Transmitter for Pipe Locating ATP-12 | 223 KiloHertz Flushable Transmitter

For use with Prototek’s Ardy receiver. The ATP-12 flushable transmitter transmits using the 223 KiloHertz frequency. It is your go to when locating with our Ardy receiver in nonmetallic lines and septic tanks.

  • Black On/Off push button

  • Batteries are not replaceable

  • Floats for easy retrieval

  • Flashing LED indicates that the sonde is transmitting

  • Red LED will come on to indicate when the battery is no longer good

  • Eyelet for easy attachment to a fishing line

ATP-12 223 kHz flushable sonde transmitter, an orange floating device used with Prototek's Ardy receiver.

HTP-15 8kHz Flushable Sonde Transmitter for Non-Metallic Locating HTP-15 | 8 KiloHertz Flushable Transmitter

The HTP-15 flushable transmitter transmits using the 8 KiloHertz frequency. It is your go to when locating with our LineFinder 2200 receiver in nonmetallic lines and septic tanks. If you are locating around power lines this powerful highly efficient frequency will greatly reduce interference.

  • Black On/Off push button

  • Floats for easy retrieval

  • Flashing LED indicates that the sonde is transmitting

  • Red LED will come on to indicate when the battery is no longer good

  • Batteries are not replaceable

  • Eyelet for easy attachment to a fishing line

HTP-15 8 kHz flushable sonde transmitter, a green floating device for locating non-metallic pipes and septic lines.

Not sure which frequency matches your receiver?

Call 513-922-7444 and we'll help you match the right sonde to your setup.

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Call 513-922-7444
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