Adjustable spunding valve — hold back-pressure and carbonate naturally in the fermenter.
Screw it onto a 1.5" tri-clamp port and dial in the pressure you want the tank to hold. The valve vents only above your set point, so the CO₂ from active fermentation carbonates the beer in-tank — no priming sugar and no separate force-carbonation step.
Key points
- Adjustable relief — set the pressure the tank holds.
- Natural in-tank carbonation during fermentation.
- 1.5" tri-clamp mount.
- 304 stainless, strips down for cleaning.
Specifications
| Connection | 1.5" Tri-clamp |
| Max height | 270 mm |
| Material | 304 stainless steel |
Care & maintenance
Rinse the valve straight after the batch, while the residue is still soft — half a minute at the end of a brew day is what keeps it opening right on your set point. Set the pressure with gas flowing rather than on a dead tank, and store it with the adjuster backed off.
Full guide: Spunding Valve Care: The 30-Second Habit That Keeps It Accurate
For pressure-capable tanks, see our Pressurized Fermenters · All 1.5" Tri-Clamp Fittings.