The Push-In Pressure Gauge is the ideal companion for the BlowTie spunding valve (FE960). It comes with an 8 mm (5/16 in.) barb, specifically designed to be compatible with 8 mm Duotight fittings. By pairing this pressure gauge with the BlowTie, youll be able to easily set your blow off pressure when using the BlowTie for pressure fermentations or pressure transfers. The dial face is triple-scaled to read in psi, bar, and kPa.