MK4 Dual Gauge CO₂ Regulator – Type 30 (4.5 bar PRV / 100 PSI Gauge)
The MK4 Dual Gauge CO₂ Regulator (Type 30) is a professional-grade gas regulator built for accuracy, durability, and long-term reliability. With its large regulator body and precision diaphragm, the MK4 delivers high flow rates with extremely fine pressure control — making it suitable for everything from serving beer to pressure fermentation setups.
This Type 30 version is designed for CO₂ and CO₂/Nitrogen mixed gases, making it compatible with standard post-mix gas cylinders. The dual gauges clearly display cylinder pressure and output pressure, while the included 65 PSI (4.5 bar) green PRV adds an extra layer of safety for modern pressurised fermenters.
Now featuring duotight 1.10 design upgrades and backed by a 5-year warranty, this is quite literally the last regulator you’ll ever need to buy.
Key Features
- Type 30 connection – compatible with CO₂ & mixed gas cylinders
- Dual gauge design – precise control in PSI, Bar, and kPa
- High-flow precision diaphragm – smooth, accurate adjustments
- Includes duotight 8mm x FFL fitting (KL06880)
- Colour-coded PRV system for easy identification
- Upgraded steel gauges with thicker, more durable housings
- M6 mounting holes for wall or panel mounting
- 5-year manufacturer warranty
Pressure Relief Valve (Included)
- Green PRV – 65 PSI / 4.5 bar (installed as standard)
Optional PRVs (sold separately):
- Red PRV – 35 PSI / 2.5 bar (KL05333)
- Grey PRV – 100 PSI / 6.9 bar (KL03070)
Important: Always use the correct PRV for pressure fermenters such as FermZilla or Kegmenter systems.
Compatibility
Suitable for use with:
- 2.6 kg CO₂ Gas Cylinder
- 6.0 kg CO₂ Gas Cylinder
- Kegerators & keezer setups
- Pressurised fermenters (with appropriate PRV installed)
What’s Included
- MK4 Dual Gauge CO₂ Regulator (Type 30)
- 65 PSI (4.5 bar) Green PRV (pre-installed)
- duotight 8mm x FFL fitting