A 15 BBL steam-heated saccharification system is a brewhouse vessel/setup used to convert malt starches into fermentable sugars during the mash process, typically by holding the mash at saccharification rest temperatures with steam heat. What it usually means- 15 BBL = about 465 gallons of working volume- Steam heating = indirect heat via a steam jacket, coil, or calandria- Saccharification = the mash rest where enzymes convert starch to sugars- Often part of a 2-vessel, 3-vessel, or 4-vessel brewhouse Typical temperature range- Usually held around 148–158°F - Common target: 152°F for balanced fermentability/body Common components- Insulated vessel- Steam jacket or internal heating surface- Mash agitator- Temperature controls and probes- Lauter tun function if integrated- Pressure-rated steam system components- Condensate return and steam trap setup Key design considerations- Heating surface area- Steam pressure and control valve sizing- Agitation to prevent scorching- Insulation efficiency- Vessel geometry for mash circulation- Cleanability/CIP compatibility Steam system requirementsYou’ll typically need:- Boiler sized to brewhouse demand- Steam supply line with shutoff and control valves- Pressure regulator- Steam trap and condensate return- Safety relief devices- Proper venting and drainage If you’re spec’ing one out, important questions are:1. Is this a dedicated saccharification tank or a mash/lauter tun?2. Do you want direct steam injection or jacketed heating?3. What is your batch size and grain bill?4. Are you running single-infusion or step mashes?5. What steam pressure is available from your boiler?If you want, I can also help with:- a spec sheet- a steam load estimate- a brewhouse equipment layout- or a quote/request-for-proposal description for a 15 BBL steam-heated saccharification vessel.