Spike Brewing CF5 Conical Review

The argument

Welded means you never replace it, only service it

The CF5 is built the way commercial tanks are built: TIG-welded ports and a welded cone, with tri-clamp ferrules rather than threaded bulkheads. That has two consequences that justify the price if you keep equipment.

There are no crevices. A threaded fitting or a gasketed bulkhead has a seat where soil can sit and where sanitizer contact is unreliable. A weld is continuous metal. For a vessel that holds beer for weeks at a time, crevice-free construction is a genuine sanitation advantage rather than a marketing point.

Every joint takes a standard part. Tri-clamp is an industry standard. When a gasket perishes you buy a gasket, from anyone, forever. Compare that with a formed vessel where a weeping bulkhead may have no serviceable path at all. Across fifteen years this is the difference between maintaining a fermenter and replacing one.

Capability

Pressure, dumping, and the options list

• Pressure rated for spunding and closed transfer, which means you can ferment under pressure, let the yeast carbonate the beer as it works, and push it to a purged keg without it meeting air. This is the capability the Brew Bucket lacks.
• Full cone with a dump valve, so trub dumping and proper two-stage yeast harvesting both work.
• Cooling coil option. Important. A coil fed by a glycol loop cools the beer directly, which is the answer to the height problem below.
• Thermowell option, so a temperature probe reads the beer rather than the vessel wall or the surrounding air. This is the correct way to control fermentation temperature.
• CIP arm option for recirculating cleaning, which on a vessel this size genuinely saves effort.

The real obstacle

It will not fit your chest freezer

This is the practical reason brewers do not buy welded conicals, and it is worth being blunt about. A full cone plus a stand is tall. A 5 cubic foot chest freezer is not. The CF5 on its stand is in most cases taller than the internal depth of the chamber a homebrewer already owns, and the airlock or gas post needs another inch on top.

The three honest routes:

• Buy the cooling coil and a glycol chiller. The intended answer. Cooling the vessel directly makes height irrelevant and gives tighter control than any chamber -- how glycol chillers work.
• Use a tall upright chamber. A refrigerator with the shelves removed. Works, uses floor space, and the thermal lag is worse than a jacket or coil.
• Buy a shorter vessel instead. If you are not going to add glycol, a formed conical or a keg-shaped pressure vessel is the honest choice -- FermZilla vs KegMenter.

Budget the cooling with the vessel, not after it. A CF5 with no viable cooling path is an expensive mistake, and it is the most common one people make with welded conicals.

Verdict

Who should buy it

Buy the CF5 if you have brewed consistently for years, want pressure capability and welded construction, and are willing to solve the cooling problem properly with glycol. It is our best welded pick in best stainless conical fermenters and our best welded pressure vessel in best pressure fermenters.

Do not buy it as a first conical, and do not buy it expecting your existing chest freezer to take it. If you want most of the capability for much less, conical vs unitank explains where the coil fits in the picture.