Flex Accessories

We've got everything you need to upgrade and accessorize your Spike Brewing FLEX Fermenter. Whether you want temp control, or just some new fittings, Great Fermentations is your one stop shop for all things FLEX!
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All-In-One PRV (Pressure Relief Valve) for Spike Brewing Conical Unitank and Flex+
$150.99Item #: CONA1022Product HighLights
Convert your Spike Unitank or Flex+ fermenters into pressurized fermentation vessels with the All-In-One PRV by Spike brewing!
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Spike Brewing Oxygenation Kit
$85.99–$165.99Item #: SPIKEO2KITProduct HighLights
An oxygenation kit specifically designed for homebrewing. Oxygenate your wort easily and conveniently with a precise amount of oxygen rather than leaving it to chance.
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Spike Brewing 3-Port Lid for Flex, Flex+, and Conical Fermenters
$105.99–$120.99Item #: SPIKE3PORTLIDProduct HighLights
- Upgrades older style lids for the Spike Flex, Flex+, and conical fermenters.
- Features 3x 1.5 in. Tri-Clamp ports for easy accessorizing. Add a tri-clamp blow-off, hop port, AND a pressure relief vale!
- Stainless steel construction
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Spike Submersible Cooling Pump
$45.99Item #: CONA1057Product HighLights
Affordable and dependable submersible pump for moving coolant around your brewery where needed to help keep things cold!
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Insulated Tubing for Spike Glycol Chiller - 6 ft. Length
$30.99Item #: CONA1037Product HighLights
Increase cooling efficiency from your glycol lines and eliminate line "sweating" with this insulated tubing by Spike Brewing.
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Brewer's Best Fixed Angle Kettle Thermometer with 1/2 in. NPT fitting and 4 in. Stem
$25.99Item #: 5036Product HighLights
An economical brew kettle thermometer with a 1/2 in. NPT fitting and 4 in. stem from the team at Brewer's Best. Making quality homebrew supplies for over 30 years!
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2 in. Tri-Clamp All Stainless Butterfly Valve with Squeeze Trigger
$74.99Item #: GF941Product HighLights
- A 1.5 inch-sized tri-clamp butterfly valve.
- Perfect for brewing applications!
- Made of 304 stainless steel.
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Thin Silicone O-Ring
$0.99Item #: GF284Product HighLights
A thin silicone o-ring for brewing hardware.