FERRODAY 0.5 Micron Diffusion Stone Kit, 2-Pack
- Material
- 304 stainless steel
- Outputs
- 1/4 in. barb, 2 × 20 in. silicone hose
- Type
- Diffusion stone
Best for Spare stones





A compact pre-assembled spunding valve that clips onto a ball lock keg post for pressure fermentation or pressure transfers; more accurate at low pressure than spring-and-poppet styles per the maker.
Best for Pressure fermenting in a corny keg
Opens the product page with today’s price, variants and delivery. We may earn a commission at no extra cost to you. For adults 21+.
| Type | Spunding valve |
|---|---|
| Outputs | Ball lock clip-on spunding valve |
| Pressure rating | Adjustable, accurate at low pressure (maker) |
As stated by the maker or seller. Specs can change between versions and sellers; confirm on the listing. We did not test this product.
Full listing title: Hobby Homebrew SPUNDY Compact Keg King SPUNDING VALVE Ball Lock Kegs Complete Assembled Clip and Go for PRESSURE FERMENTATION in a Ball Lock Corny Keg KK 11169 Gray
Best for Spare stones
Best for 10-gallon pressure fermenting
Best for First pressure fermenter
Best for 10-gallon pressure batches