A Pressure Relief Valve upgrade or replacement for the Chronical line of fermenters from Ss BrewTech.

Features:

• Standard replacement part for Half Barrel
• Can be retrofitted to 7 Gal Chronical lid
• Releases pressure between 2-2.5 psi
• Food grade silicone O-ring
• Use Dewalt DWA1783IR step bit for retrofit
• For 7/32" inch hole diameter (in lid)