Introduction
The KegLand Duotight Blowtie 2 Spunding Valve is a diaphragm-based pressure relief valve designed for precise pressure regulation in fermentation vessels or kegs. Unlike traditional spring-based spunding valves, this model offers enhanced accuracy. It features an integrated 0-15psi gauge, allowing for direct monitoring of the pressure within your system. This device is ideal for fermenting under pressure or for carbonating kegs with controlled precision.

Features
- Diaphragm-Based Design: Provides more accurate pressure regulation compared to spring-based valves.
- Integrated Pressure Gauge: Features a built-in 0-15psi gauge for convenient pressure monitoring.
- Compact Size: Designed for space-saving applications in home brewing setups.
- Durable Construction: Made from food-grade acetal plastic and stainless steel for longevity and hygiene.
- Versatile Mounting: Can be mounted to a wall or banked together with other Blowtie Spunding Valves or Inline Regulators.
- Adjustable Gauge Orientation: The pressure gauge can be rotated to any 90-degree orientation for optimal viewing.
Specifications
| Attribute | Value |
|---|---|
| Product Type | Carbonation Equipment |
| Material | Synthetic Material (Acetal Plastic), Stainless Steel |
| Require Food Contact | Yes |
| High-concerned chemical | None |
| Integrated Gauge Range | 0-15 psi |
| Maximum Input Pressure | 150 psi |
| Minimum Operating Temperature | -5°C |
| Maximum Operating Temperature | 60°C |
| Approximate Width | 34.11 mm |
| Approximate Height | 71.45 mm |
| Approximate Depth | 90.47 mm |



Setup Instructions
- Connect to Vessel: Attach the Blowtie 2 Spunding Valve to your fermentation vessel or keg using appropriate Duotight fittings. For example, it can be connected to a ball lock disconnect for kegs.
- Primary Regulator (if applicable): If connecting to a high-pressure gas cylinder, ensure a primary regulator is used to reduce the pressure to below 150psi before it reaches the Blowtie 2. The Blowtie 2 is designed to handle a maximum input pressure of 150psi.
- Orient the Gauge: If needed, the integrated gauge can be rotated for better visibility. Use a Phillips head screwdriver to loosen the screws holding the gauge, carefully rotate it to the desired 90-degree increment, and then re-tighten the screws.
- Mounting (Optional): The Blowtie 2 can be mounted to a wall or banked together with other units using screws through the designated mounting holes. This allows for organized gas boards or manifolds.


Operating Instructions
- Set Desired Pressure: Turn the yellow knob to adjust the pressure setting. The integrated gauge will display the current pressure.
- Fermentation Under Pressure: Connect the spunding valve to your fermenter. As fermentation produces CO2, the pressure will build. The valve will release excess gas once the set pressure is reached, allowing for controlled pressure fermentation.
- Keg Carbonation: Attach the spunding valve to a keg. Introduce CO2 into the keg at a pressure higher than your desired carbonation level. The spunding valve will vent excess pressure, allowing the beer to carbonate to the set pressure.
- Monitoring: Regularly check the integrated gauge to ensure the pressure is maintained at your desired level.
Maintenance
- Cleaning: Regularly clean the spunding valve and its components with a suitable brewing sanitizer. Disassemble if necessary to ensure all parts are free from debris or build-up.
- Inspection: Periodically inspect the diaphragm and O-rings for any signs of wear, cracks, or damage. Replace worn components to maintain optimal performance and prevent leaks.
- Gauge Screws: Ensure the stainless steel screws holding the gauge in place are securely tightened.
Troubleshooting
- Inaccurate Pressure Readings: Ensure the gauge range is appropriate for your application. Small gauges can be less precise at the extreme ends of their range. If you require very fine adjustments, consider a gauge with a narrower range.
- Pressure Not Holding or Leaking: Check all Duotight connections for proper seating and tightness. Inspect the spunding valve's internal diaphragm and seals for any damage or foreign material that might prevent a proper seal.
- Gauge Not Responding: Verify that there is actual gas pressure in the system. Ensure the valve is correctly connected and not obstructed.
User Tips
- Gauge Selection: Always choose a gauge range that is most suitable for your specific application to ensure the most accurate readings.
- Pressure Limits: Never exceed the maximum rated pressure of the gauge or the valve (150psi input for the valve).
- Versatile Use: While primarily for CO2, these valves can also be used for regulating other gases like nitrogen or compressed air, or even water pressure in a brewery setup.
- Modular Design: The design allows for banking multiple Blowtie Spunding Valves or Inline Regulators together to create a custom gas manifold for different pressure requirements.
Warranty and Support
For any warranty claims or technical support, please contact the original seller or KegLand directly. Ensure you retain your proof of purchase for any claims.
Instructional Video
Watch this video for a detailed overview of the Blowtie Spunding Valve and its features, including setup and usage examples: