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AirTAC GR300 · Air Pressure Regulator

Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30010C3

The AirTAC B52-GR Copper-Free Air Source Treatment Unit B52-GR30010C3 is a genuine G-series air pressure regulator. It holds a stable downstream pressure over the range 0.05 - 0.9 MPa (7 - 130 psi) with PT3/8" ports, and ships with a pressure gauge. A regulator does not filter the air — put a GF filter upstream, or use a GFR filter regulator, when water and particulate must also be removed.

  • TypePressure regulator
  • Port sizePT3/8"
  • Regulating range0.05 - 0.9 MPa (7 - 130 psi)
  • Pressure typeStandard type
  • Pressure gaugeFitted
  • Reflux valveNot fitted
  • ThreadPT
  • BracketFixing bracket included
$53.63 $58.64Save 8% Standard model — ready in 3-5 business days to process and dispatch
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  • No minimum order. A single piece can be ordered.
  • Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
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About the Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30010C3

The GR30010C3 is an AirTAC G-series air pressure regulator: regulation only, with no filter element, no drain bowl and no lubricator. This 300-size unit has a 3/8 in. PT port as standard, a standard pressure type (0.05-0.9 MPa / 7-130 psi adjustment range), and the C3 suffix specifies an external round pressure gauge with a bar scale.

This is a genuine AirTAC part. The GR series is available in sizes 200, 300, 400 and 600 with matching port sizes, handles a maximum inlet pressure of 1.0 MPa (145 psi) and a medium temperature range of -20 to 70 C. GR units are panel-mountable and can take an optional bracket. Flow is published as curves rather than a single rated figure, so we confirm datasheet and sizing figures on request.

Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30010C3 Technical Specifications

ModelAirtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30010C3
SeriesGR300 pressure regulator
Port sizePT3/8" (PT thread)
Regulating range0.05 - 0.9 MPa (7 - 130 psi)
Pressure typeStandard type
BracketFixing bracket included
FluidCompressed air
Max. working pressure1.0 MPa (145 psi)
Temperature range-20 to +70 °C
Pressure gaugeFitted — round, bar scale
Reflux valveNot fitted
MountingPanel mounting; optional fixing bracket

Specifications follow the official AirTAC G-series air-preparation data. Note the GR temperature range is -20 to +70 °C, wider than the other G-series units. A regulator has no bowl and no filter element, so there is no filtering grade. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.

Model Code: Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30010C3

GR300G-series pressure regulator, 300 body — sets the port range.
10Port size PT3/8". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2".
(blank)Standard type — 0.05 - 0.9 MPa (7 - 130 psi). Blank is standard, L is the low-pressure type.
(blank)Fixing bracket included.
(blank)Pressure gauge fitted (blank).
CGauge shape: Round. C is round, F is square.
3Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar.
(blank)PT thread. PT is the default; G is BSPP and T is NPT.
(blank)No reverse-flow valve (the default).

Field order is size, port, type, bracket, gauge, gauge shape, scale, thread, reflux — a blank position takes the default. Example: GR300-08LNK is a 300 body, PT1/4", low-pressure type, no gauge, with reflux valve.

Size Class

  • GR200PT1/8" - PT1/4"
  • GR300PT1/4" - PT1/2"
  • GR400PT3/8" - PT1/2"
  • GR600PT3/4" - PT1"

A larger body carries a larger port and holds set pressure better as flow rises. AirTAC publishes flow only as curves, so size the body from your peak demand with headroom rather than from a single rated figure.

This modelGR300 · PT3/8" · 0.05 - 0.9 MPa (7 - 130 psi)
One size downGR200
One size upGR400
Line orderFilter first, then regulator, then lubricator

Where the Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30010C3 Is Used

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Machine tool air inlet regulation

Trim plant supply down to the pressure a machine tool's pneumatic circuits were specified for, with the bar-scale gauge matching European-style machine documentation.

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Laboratory bench air supply

Set a stable, repeatable bench pressure for lab pneumatic apparatus and test rigs, with the local round gauge allowing verification without extra instrumentation.

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Maintenance shop drop regulation

Regulate pressure at workshop air drops feeding hand-held pneumatic tools and test fixtures, using the included bracket for tidy wall or bench mounting.

Is the Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30010C3 the Right Regulator?

Size 300 with a 3/8 in. PT port is the mid-range step in the GR family; step down to 200 or up to 400/600 as your piping and flow demand changes. The C3 gauge suffix gives a round external gauge reading in bar - choose C2 if your maintenance team works in psi. Thread is PT as standard; G (BSPP) and NPT versions are catalogue options. A bracket is included and the unit is panel-mountable.

Because GR flow is published as curves rather than a single rating, send us your application conditions and we will confirm sizing against the datasheet before you order.

Quick checklist

  • ✓ Body size for your peak flow (PT3/8" here)
  • ✓ Standard 0.9 MPa or low-pressure 0.4 MPa
  • ✓ Gauge fitted, or order N without
  • ✓ Gauge shape C round / F square
  • ✓ Scale MPa (1), psi (2) or bar (3)
  • ✓ Reflux valve needed, order K
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Installation & Maintenance Notes

  • check Install downstream of the filter, following the airflow arrow.
  • check Keep inlet pressure at or below 1.0 MPa (145 psi).
  • check Set pressure while air is flowing, then lock the knob.
  • check Adjust within 0.05 - 0.9 MPa (7 - 130 psi) only.
  • check Operating range -20 to +70 °C.
  • check Panel-mount or use the fixing bracket; do not hang it on tubing.

Without a reflux valve, air cannot flow back through the regulator — order the K option if reverse flow is required. A regulator does not remove water or particulate; that is the filter's job.

Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30010C3 FAQ

No single rated figure exists in the published data - AirTAC publishes GR flow as curves only. Send us your application pressures and flow target and we will confirm the datasheet figure and sizing on request before you place the order.

Only the gauge scale. C3 carries a round external gauge reading in bar; C2 carries the same round gauge with a psi scale. The regulator itself is unchanged: 300 size, 3/8 in. PT port, 0.05-0.9 MPa (7-130 psi) adjustment range and -20 to 70 C temperature range.

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Request a Quote for Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30010C3

Send us the quantity, thread type (PT / G / NPT), gauge scale and destination. We confirm price, availability and lead time — usually within 7-8 hours.

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