Keg & relief valve
A refillable beverage keg with separate gas and liquid posts, a dip tube and a pressure relief valve. Identify posts by their markings and documentation, not colour alone.
DANGRpack / THE SYSTEM EXPLAINED
Know your setup.
Bring the good times.
A component overview and preparation checklist for experienced homebrewers.
DANGRpack is a DIY prototype in development. This guide explains the system concept. Use the instructions for your exact keg, cylinder, regulator and fittings for assembly and operation.
01 / FOLLOW THE FLOW
Gas in. Good times out.
GAS PATH
- 01 / CO2 cylinderCorrect valve and regulator connection
- 02 / Regulator & gas lineControls gas pressure to the keg
- 03 / GAS IN → headspaceUse the marked gas post
KEGPressure relief valve on lid
Gas above · beverage below
Dip tube reaches toward the base
Gas above · beverage below
Dip tube reaches toward the base
BEVERAGE PATH
- 04 / Dip tube → LIQUID OUTBeverage leaves from near the bottom
- 05 / Beverage lineFood-contact tubing and matched fittings
- 06 / Serving tapControls the pour
Gas: cylinder → regulator → gas line → GAS IN → keg headspace.
Drink: dip tube → LIQUID OUT → beverage line → tap.
02 / WHAT EACH PART DOES
A small system.
A few important connections.
CO2 & regulator
Use beverage-grade CO2 and a regulator matched to the exact cylinder valve. A gauge range is not a safe working-pressure specification for the whole setup.
Gas connection
The regulated gas line connects to GAS IN. Match tubing size, fittings and pressure ratings. Use the backflow protection specified by the equipment manufacturer.
Beverage connection
The dip tube feeds LIQUID OUT, then food-contact beverage tubing and the tap. Line dimensions and serving pressure need to suit the beverage and the complete system.
Backpack & retention
The bag carries the setup. Verify clearances, retention, access to controls and the loaded weight. The soft bag is not a pressure vessel or a substitute for component protection.
Cleaning equipment
Use cleaners and sanitizers approved for the keg, seals, lines and tap. Keep the chemical labels and component manuals with your setup.
03 / PREPARATION & CARE
Before the first pour.
Identify and inspect.
Record the exact models, connection types and working-pressure limits. Inspect the keg, seals, posts, relief valve, cylinder, regulator and lines. Replace damaged parts before use; follow each manufacturer’s inspection procedure.
Clean, then sanitize.
Clean the keg and every beverage-contact part, including the dip tube, disconnect, line and tap. Rinse cleaning chemicals as directed, then sanitize according to the sanitizer label. Use the specified dilution, contact time and protective equipment. Never mix cleaning chemicals.
Assemble and check on the bench.
Follow the exact component manuals for connection order, valve positions and leak testing. Confirm GAS IN and LIQUID OUT before connecting. Use only compatible, rated parts. Stop if a connection leaks or the pressure behaves unexpectedly.
Set up for serving.
Chill the beverage as appropriate and balance the serving setup for its temperature, carbonation and line configuration. Stay within every component’s working-pressure limit. Secure the cylinder upright, protect valves and keep CO2 equipment in a well-ventilated area.
Shut down before opening.
Follow the manufacturer’s shutdown sequence. Isolate the gas supply and fully depressurize the keg before opening its lid or servicing parts. Turning off the gas does not remove pressure already in the keg.
Clean up and record the setup.
Clean promptly after use, inspect seals and tubing, and store components as their manuals specify. Record the parts and settings used so that changes can be checked before the next session.
General draught-system reference: Brewers Association, Draught Beer Quality Manual ↗. The checklist is a preparation framework, not a validated operating procedure for the pictured prototype.
04 / FIT FIRST
Litres are only
part of the story.
We are considering nominal 6 L and 10 L kegs as well as 1.5 U.S. gallon (about 5.7 L) and 2.5 U.S. gallon (about 9.5 L) alternatives. These are candidate sizes, not approved compatibility claims.
See the prototype fit photosWhat still needs measuring
- Keg diameter and total height, including posts and handles.
- Extra height for connected disconnects and hose bends.
- Cylinder, regulator and protective clearance.
- Bag opening, interior space and access to shutoff controls.
- Retention and total loaded weight, with the actual beverage.
Exact parts, serving settings and carry instructions will follow fit verification and testing. DANGRpack is not available to order.