Fermtech Regular 5/16 Auto-Siphon, Clear, 5516 Review (2026)

How it primes

The auto-siphon works by pumping the outer sleeve down over the inner cane while both are submerged in the liquid being racked, which pushes liquid up and starts a steady gravity flow without needing to suck on a hose to get it started. Manufacturer information states one stroke is generally enough when the cane is immersed in as little as six inches of beer or wine, though a shallower or thinner liquid layer may need a second stroke to fully prime. Once flowing, the siphon keeps moving liquid on its own as long as the outlet stays below the liquid level remaining in the fermenter.

Size and fit

This is the Regular size, built around a 5/16 inch tubing diameter and roughly 24 inches of length, which is the size most commonly used with standard 5 or 6 gallon glass carboys and plastic bucket fermenters. Fermtech also sells a larger Fast Flow version with a bigger diameter for faster transfers on bigger batches, so brewers working with volumes well above 5 gallons regularly may want to compare the two sizes rather than defaulting to this Regular one for every batch they rack off a fermenter. The Regular size remains the more common choice for the standard 5 gallon batch that most homebrew recipes are written around.

Sediment control

The siphon includes a removable diverter tip at the bottom of the inner cane, which is designed to reduce how much loose sediment or trub gets pulled up during racking by directing the intake slightly to the side rather than straight down into settled yeast and hop debris. This is a common feature across auto-siphon designs rather than something unique to this listing, but it is worth knowing the tip is removable so it can be cleaned separately after a racking session where a lot of sediment was disturbed by the cane.

Cleaning and durability

The auto-siphon is a plastic construction that can be taken apart for cleaning between uses, which matters since sanitizing every surface that touches finished beer or wine is part of standard homebrew practice. Manufacturer information lists a maximum temperature of about 120F, so the unit should not be run through boiling water or a very hot sanitizing soak, and dropping a plastic cane on a hard floor carries a real risk of cracking it, since plastic is less forgiving than the stainless steel racking canes sold as an alternative for this job, and a cracked cane usually means replacing the whole unit rather than a single part.

Who should buy it

This auto-siphon fits homebrewers racking standard 5 to 6 gallon batches from a carboy or bucket who want a straightforward, no-mouth-siphon tool at an accessible price. It is a poor standalone purchase for someone without existing 5/16 inch tubing on hand, since this particular listing is the bare siphon body without a hose included, so a length of matching tubing needs to be ordered separately or already owned. For anyone who already has tubing or is buying it alongside, this is the same basic auto-siphon design that has been a homebrewing staple for racking beer and wine for years, and it remains a common recommendation in beginner equipment lists for that reason.

Frequently asked questions