Food, Beverage and Dairy

Tank Blanketing Pressure Regulators

When products need to be kept away from oxygen, moisture and other contaminants in the air, the obvious answer is to replace the air at the top of the tank with a “blanket” or “pad” of inert gas such as nitrogen. The pressure of the blanketing gas is slightly higher than atmospheric pressure. Less than 1 PSI can do the trick. There are several options for letting out the excess gas. One is a simple conservation vent, basically a tube with a flap on the end. For some types of fluids, a relief valve might be a better choice. The third option is a tank-blanketing back-pressure regulator.

Together, these components not only help protect the contents of the tank, they help protect the tank itself by preventing corrosion and extending useful life. By maintaining a constant pressure inside the tank, they help prevent rupture or collapse.

Sanitary Pressure Regulators

Swagelok sanitary pressure regulators include the PRS series, a pressure-reducing regulator, and the TBRS series, a tank blanketing regulator. These sanitary regulators are designed for pressures up to 232 psig (16.0 bar) and are available with sanitary clamp end connections. The PRS series pressure regulator features a handle knob for pressure adjustment; the TBRS series tank blanketing regulator has an adjusting screw for pressure adjustment. Both series are compliant with FDA/USP Class VI and feature 316L stainless steel metal components and EPDM seals.

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