BG12-10 joins 12 mm tubing to 10 mm tubing using two different push-to-connect openings.

No. Its purpose is to connect different tube outside diameters, not to regulate pressure or meter flow. Reduction in line size may change pressure drop and flow capacity.

The end designated 12 mm accepts that outside diameter and the other end accepts 10 mm. Check the actual markings and the size of each tubing run before insertion.

Confirm both outside diameters, the required air or vacuum flow, tubing bend radius and the smallest effective bore. Undersizing a line can reduce cylinder speed or vacuum response.

The published all-metal B-Series range is specified for compressed air and vacuum service, subject to compatible tubing, proper sealing and the limits of the assembled system. Other fluids need separate compatibility confirmation.

The published fitting-family limits extend from full vacuum to 176 psi (12 bar, as listed for the fitting family), with a fitting temperature range of -40 to +248 °F (-40 to +120 °C). Actual system limits also depend on tubing, seals and installation; do not treat these as fluid-compatibility certifications.