Skip to the content
Duotight BlowTie 2 Diaphragm Spunding Valve - 0-15 PSI Pressure Fermentation
$2199
Duotight BlowTie 2 Diaphragm Spunding Valve - 0-15 PSI Pressure Fermentation
On Sale
Duotight BlowTie 2 Diaphragm Spunding Valve - 0-15 PSI Pressure Fermentation
In stock
$2199$29.99Save $8
30-day returns · Easy with prepaid labels provided
Get it by 3–5 business days
Free shipping · Change ZIP
As soon as tomorrow. Choose Next Day during checkout.
- Pressure Range: 0 - 15 PSI.
- Technology: Diaphragm-controlled (High Precision).
- Connections: Duotight 8mm (5/16") Push-Fit.
- Application: Spunding, Pressure Fermentation, and Transfers.
?
Need a hand?
Bilingual support from real techs · Mon–Fri 8:30–5 CT
Request a quote
Need a custom build, freight order, or just want pricing in writing before you order? Quotes back within 24 hours.
The Duotight BlowTie 2 is the most precise spunding valve on the market for pressure fermentation. Unlike spring-loaded valves that fluctuate, the BlowTie 2 uses a large diaphragm to maintain a rock-steady internal pressure in your fermenter. This allows you to carbonate your beer during fermentation, reduce ester production, and perform oxygen-free transfers. Includes an integrated 0-15 PSI gauge and Duotight 8mm push-fit connections.
Fermentation Pro-Tip: To ferment under pressure, set the BlowTie to 12-15 PSI after the first 24 hours of fermentation. This helps suppress foam and ester development. Always ensure the valve is clean; if krausen (foam) enters the BlowTie, disassemble and rinse the diaphragm immediately to prevent the valve from sticking open or closed.