A drain camera that fits the pipe can still fail at the door. The access opening (a cleanout, a pulled toilet flange or a P-trap) is often smaller than the pipe behind it, and the head has to pass that opening and then the first bend. Choose on pipe diameter alone and you end up dismantling a trap you never planned to touch, or stalling at a 90° elbow with most of the cable still on the reel. This guide sorts pipe cameras by the opening and pipe size they serve, from 1.25-inch fixture lines to 12-inch sewers. For a wider plumber-focused shortlist, see drain inspection cameras for plumbers.
The short answer: the MiniFlex 2 19mm serves the smallest openings, the MiniFlex 2 36mm covers 2 to 6 inch lines, and the HATHORN Mid covers 2 to 12 inch lines. Fiberscope.net sells the cameras discussed here and services them in-house.
How to match a pipe camera to the opening
The head's outside diameter (OD) must clear the smallest opening on the route, and the smallest opening is rarely the pipe itself.
- Measure the smallest opening on the route first: cleanout, P-trap or fitting, not the pipe.
- The MiniFlex 2 19mm has a 0.75 in (19 mm) head and starts at 1.25-inch pipe.
- The MiniFlex 2 36mm covers 2 to 6 inch lines; the HATHORN Mid covers 2 to 12 inch lines.
- Add a 512 Hz sonde and a compatible receiver when you must locate a break from above ground.
A P-trap is the curved section under a fixture that holds water against sewer gas; a cleanout is the capped access fitting on a lateral, the pipe that runs from the building to the main sewer. Both are tighter than the straight pipe they connect to, so size the camera to them. A camera that passes the trap usually passes the straight run behind it, while the reverse does not hold.
| Access opening or pipe | Camera that fits the job |
|---|---|
| 1.25-inch fixture lines, pool skimmer lines, tight traps | MiniFlex 2 19mm |
| 2 to 6 inch drains and laterals | MiniFlex 2 36mm |
| 2 to 12 inch drains, laterals and sewer lines | HATHORN Mid |
| Secondary laterals needing a steerable view | iSnake |
| Drain lines up to 100 ft (30 m) from a portable kit | HATHORN Micron |
Check three numbers before you pick: the smallest opening, the tightest bend and the run length from the access point to the far end. The head OD answers the first, the head's flexibility the second, and the reel length the third. Cable length is its own decision, covered in sewer cameras ranked by cable length.
Prices below were checked in September.
MiniFlex 2 19mm: the smallest openings
The MiniFlex 2 19mm Small Drain Camera Extended Set runs a 0.75 in (19 mm) head for pipes from 1.25 inches, and it costs from $5,229. The head carries a 512 Hz sonde, so you can trace it from above ground with a compatible receiver, and footage records to SD.
This is the camera for fixture drains, P-traps and pool plumbing. Hayden E. wrote: "I've already used it successfully to navigate 1.5" pool elbows to diagnose a collapsed skimmer line." Ron A. reported that his crew "knocked out 28 direct vent fireplaces in 2 hours."
Its limit is reach and head size: for lines at 2 inches and up where you want a larger, better-centered head, step up to the 36mm.
MiniFlex 2 36mm: 2 to 6 inch drains and laterals
The MiniFlex 2 36mm Drain Camera Extended Set pairs a 1.42 in (36 mm) head with 2 to 6 inch pipes, from $6,890. It also carries a 512 Hz sonde and records.
It suits the plumber who works kitchen stacks, building drains and residential laterals through a cleanout of 2 inches or more. The 1.42 in head will not pass a 1.25-inch trap, so if half your calls start under a sink, the 19mm is the better first purchase.
HATHORN Mid: 2 to 12 inch lines
The Wi-Fi Sewer Camera HATHORN Mid inspects sewer pipes from 2 inches up to 12 inches, from $7,900. It broadcasts its own Wi-Fi signal to a phone or tablet through a free app, carries a 512 Hz sonde, and the HATHORN line is rated IP68 at 60 psi (4 bar).
It is built for municipal and contractor work where one camera must cover both a 2-inch branch and a 12-inch main. Wi-Fi links the unit to your phone; where the head sits in the pipe does not change that connection range.
HATHORN Micron: portable drain lines up to 100 ft
The Wi-Fi Drain Camera HATHORN Micron is the portable option for drain lines up to 100 ft (30 m), from $4,300. It weighs about 16 lb (7.3 kg), shows video on your phone over its own Wi-Fi signal, carries a 512 Hz sonde and holds the same IP68 rating at 60 psi (4 bar) as the rest of the HATHORN line.
It fits the truck that carries one camera for everyday drain calls. For longer laterals, move to the Mid or a VIPER-class reel.
iSnake: steering inside secondary laterals
The Pan-and-Tilt Drain Camera iSnake is built for secondary laterals and drainage pipes, from $5,690. Its head pans and tilts, which changes the view direction at a junction or a joint. It does not propel the head, so push force still comes from you and the cable. Footage records to USB.
Choose it when you need to look sideways at a tap or an offset joint rather than only down the pipe.
Comparison at a glance
| Camera | Pipe range | Locating | View and recording |
|---|---|---|---|
| MiniFlex 2 19mm | From 1.25 inches | 512 Hz sonde | SD recording |
| MiniFlex 2 36mm | 2 to 6 inches | 512 Hz sonde | Recording |
| HATHORN Mid | 2 to 12 inches | 512 Hz sonde | Wi-Fi to phone or tablet |
| HATHORN Micron | Drain lines to 100 ft (30 m) | 512 Hz sonde | Wi-Fi to phone |
| iSnake | Secondary laterals | — | Pan and tilt, USB recording |
What you'll also need
Locating takes three parts: a camera with a sonde in the head, its frequency (512 Hz here), and a separate compatible receiver. The SnapTrack Sewer Camera Sonde Locator reads 512 and 640 Hz, from $1,390. Rebar and metal distort the field, so treat depth readings under reinforced slabs with care.
Roller skids support and center the head in larger pipe. They do not move it forward.
Other options
For the largest municipal work, the RIDGID SeeSnake line has a very large dealer and service network in the USA; see RIDGID. Its battery counterpart for contractors already on one platform is the Milwaukee M18 pipeline camera line at Milwaukee Tool; that is the better choice if your whole kit runs on M18 batteries.
For reporting on municipal condition surveys, check the coding standards from NASSCO (PACP). For waterproof ratings, IEC 60529 defines the IP codes: IP67 is temporary immersion to 1 m for 30 minutes, and IP68 goes beyond 1 m under the manufacturer's stated conditions.
Common mistakes
- Sizing to the pipe instead of the trap or cleanout.
- Buying a 36mm head for work that starts at 1.25-inch fixtures.
- Skipping the sonde, then digging to find a break.
- Reading cable length as reach; bends and friction shorten it.
FAQ
What access opening size do I need for a drain camera?
The head OD must be smaller than the smallest opening on the route. The MiniFlex 2 19mm has a 0.75 in (19 mm) head and starts at 1.25-inch pipe.
Which camera covers 12-inch sewer pipe?
The HATHORN Mid inspects pipes from 2 to 12 inches. The MiniFlex 2 36mm covers 2 to 6 inches.
Can I locate the camera head above ground?
Yes, with a camera that has a 512 Hz sonde in the head and a compatible receiver such as the SnapTrack. Metal and rebar distort the field.
Does Wi-Fi range depend on how deep the head is in the pipe?
No. Wi-Fi links the HATHORN unit to your phone or tablet, so the connection range is set at the unit, not at the head.
Is a push camera the same as a crawler?
No. A push camera is moved by cable force. A crawler is a powered, self-propelled unit.
Are HATHORN cameras waterproof?
The HATHORN line is rated IP68 at 60 psi (4 bar). That rating applies to the rated part, not to every accessory.
Get the configuration reviewed
Send your smallest access opening, pipe ID, run length, bends and traps, and whether you need locating. A Fiberscope.net specialist will match the right head and reel. Call 1-877-613-2210, Monday to Friday, 8:00 to 18:00 CST, or use the contact page on the store.
About the author
Vladimir Khubiryants founded Fiberscope.net to give professionals access to reliable video inspection equipment without enterprise pricing. For over 20 years he has sourced and tested borescopes, sewer cameras and fiberscopes in Fiberscope.net's in-house test and repair facility, helping plumbers, pipeline engineers, aviation and military teams choose the right tool for the job. See our cameras in use on YouTube.
Leave a comment
This site is protected by hCaptcha and the hCaptcha Privacy Policy and Terms of Service apply.