Volume Extension Kit! B40L

Add +20 L of capacity to your B40L brewing system — no new vessel needed.

A bolt-on extension that lifts the B40L's working volume so you can push bigger grain bills and higher pre-boil volumes through the system you already own. Everything stacks on the existing kettle and seals with a food-grade gasket, and the matched malt pipe keeps the grain bed at the right depth for efficiency.

Photos show the kit on a B70L system; the B40L kit is functionally identical, sized to the B40L.

What's in the kit

• Stainless kettle extension ring (+20 L)
• Extended malt pipe, matched to the taller body
• Food-grade silicone sealing gasket
• Recirculation / transfer pipe extension

Key points

• More wort, same footprint — step up batch size without adding vessels.
• Optimised grain bed — the extended malt pipe holds the right bed depth for good efficiency.
• Steam-tight seal — silicone gasket between kettle and extension minimises leaks and drips.
• Plug & play — designed specifically for the B40L; fits in minutes.

Install & use

1. Seat the kettle extension on the B40L and fit the gasket into the groove.
2. Insert the extended malt pipe and refit the bottom / top screens as usual.
3. Fit the recirculation pipe extension and set the spray-arm height.
4. For big grain bills, start recirculation gently and build flow as the bed settles.

Which extension kit fits your system?

Specifications

Safe use: Don't exceed the maximum liquid level — leave enough headspace for a vigorous boil. Watch pump load on thick mashes and throttle flow if the bed compacts. After brewing, strip, clean and dry all parts before storage.

See the full Brewing systems range and matching spare parts.