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BG1/2-3/8

BG1/2-3/8
BG1/2-3/8

BG1/2-3/8 - 1/2 in to 3/8 in Nickel-Plated Brass Reducing Union

The Pneuforce BG1/2-3/8 is an all-metal nickel-plated brass reducing push-to-connect union that joins 1/2 in tubing to 3/8 in tubing in compressed-air or vacuum circuits. It adapts tube outside diameters; it is not a pressure regulator or flow-control valve.

The fitting includes a positive Click-Click grip collar release feature, providing audible and tactile feedback when the collar is depressed during tube removal.

1/2 inTube OD (side 1)
3/8 inTube OD (side 2)
BrassNickel-Plated Body
Air + VacuumService

Technical Specifications

SpecificationDetails
Product TypeReducing Straight Union; push-to-connect fitting
Part NumberBG1/2-3/8
Tube Size1/2 in to 3/8 in
Body MaterialAll-metal nickel-plated brass
Tube ReleasePositive Click-Click grip collar feedback during tube disengagement
MediaCompressed air and vacuum
Operating PressureFull vacuum (29inHg) to 12 bar (176 PSI)
Operating Temperature-40°C to +120°C / -40°F to +248°F
HS / HTS CodeHS Code 7412.20 & HTS Code 7412.20.0035

Industrial Nickel-Plated Brass Fitting

This B-Series all-metal fitting is intended for applications where plastic-bodied fittings may not be preferred. Nickel-plated brass provides excellent mechanical strength, corrosion resistance and long service life in demanding pneumatic and vacuum installations.

29inHgVacuum Rated
176 PSIMax Pressure
120°CMax Temperature
Click-ClickTube Release

Typical Applications

  • Transitioning between different tube outside diameters
  • Adapting older pneumatic tubing to a new device line
  • Matching vacuum hose connections while checking line flow
  • Machine retrofits where a line size changes

Fitting Function

This reducing union connects 1/2 in tubing to 3/8 in tubing in a straight run. The reduction changes the tubing connection size; pressure and flow remain determined by the wider circuit.

Installation Note: Cut tubing squarely and push the tube fully into the fitting before pressurizing or applying vacuum. To remove tubing, depress the grip collar; the Click-Click release feedback helps confirm the collar has been disengaged for tube removal. Always confirm tubing compatibility for pressure, temperature and media.

Selecting and Installing This Fitting

For BG1/2-3/8, verify the 1/2 in and 3/8 in tube outside diameters independently; a reduction can affect line flow and pressure drop. Cut the tubing squarely, insert it fully and leave access to the release collar. Check actual tubing pressure and temperature limits, which may be lower than the metal fitting limits.

Frequently Asked Questions

Which two tube diameters does this reducing union join?

BG1/2-3/8 joins 1/2 in tubing to 3/8 in tubing using two different push-to-connect openings.

Does a reducing union control pressure?

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.

Which end takes the larger tube?

The end designated 1/2 in accepts that outside diameter and the other end accepts 3/8 in. Check the actual markings and the size of each tubing run before insertion.

What must be checked when reducing a pneumatic tube run?

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.

Is this fitting suitable for compressed air and vacuum?

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.

What are the pressure and temperature limits?

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.


Link to Pneuforce Data Sheets
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Suitable for Compressed Air, Vacuum & NON Potable Water Applications