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Primary CO2 regulators.

The primary CO2 gas regulator is designed to decrease the gas cylinder’s high pressure to a lower, usable pressure for dispensing. This draft regulator can be used in a single pressure, single keg application or for servicing several secondary regulators downstream.



Low Pressure Gauge

Reads the amount of applied pressure to the keg. This gauge is located at the 12 o’clock position on the regulator body.

High Pressure Gauge

Reads the amount of pressure in the cylinder. This gauge is located at the 9 o’clock position on the draft regulator body. For CO2 cylinders, once pointer is in the red, liquid gas is depleted and cylinder should be changed. For Nitrogen or blends, pointer will zero out, thus indicating empty cylinder.

Adjustment Screw

Set the output pressure by turning the screw clockwise for greater pressure. To reduce pressure, turn screw counter-clockwise completely, vent and readjust clockwise to correct pressure.


Located at the 6 o’clock position on the regulator body is the output source. The shutoff allows the gas to be turned off at the regulator if the coupler has been removed.

Tank Connector and Nut

Attaches the regulator to the gas cylinder. These fittings are located at the 3 o’clock position on the regulator body. Due to high pressures in the cylinders and this connection is a common location for leaks; it is critical to securely fasten the connector nut using the correct washer. Some draft regulator models have built-in connector seals while other models require a fiber or plastic washer to be installed with each tank change. Nitrogen connectors either have no washer or a built-in seal. Always tighten the tank nut a sturdy wrench, tank mount wrench, or regulator wrench.

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