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AirTAC GR300 · Air Pressure Regulator

Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30008C1

The AirTAC Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30008C1 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 PT1/4" 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 sizePT1/4"
  • 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 — usually ships in 3-4 days
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About the Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30008C1

The GR30008C1 is a genuine AirTAC G-series air pressure regulator for compressed air only. It reduces and holds a steady downstream pressure across the standard adjustment range of 0.05-0.9 MPa (7-130 psi). The C suffix specifies an external round pressure gauge and the scale code 1 means the gauge reads in MPa. It decodes to size 300 with PT1/4 (1/4 inch PT) ports and, with no bracket code, a mounting bracket is included; the GR series is also panel-mountable. Maximum inlet pressure is 1.0 MPa (145 psi), the working temperature range is -20 to 70 C, and pressure loss through the regulator is low.

This is a genuine AirTAC part, not a copy or a substitute. The GR series is available in sizes 200, 300, 400 and 600 with ports from 1/8 inch to 1 inch and PT, G (BSPP) or NPT threads, with square embedded or external round gauges in MPa, psi or bar scales and an optional reverse valve. AirTAC publishes regulator flow as curves rather than a single rated figure, so we confirm flow and datasheet figures on request before you order.

Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30008C1 Technical Specifications

ModelAirtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30008C1
SeriesGR300 pressure regulator
Port sizePT1/4" (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, MPa 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-GR30008C1

GR300G-series pressure regulator, 300 body — sets the port range.
08Port size PT1/4". 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.
1Gauge scale: MPa. 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 · PT1/4" · 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-GR30008C1 Is Used

precision_manufacturing

CNC machining cell air supply

Regulates the machine air feed on a CNC machining cell, with the round MPa gauge giving operators a clear visual check of the working pressure at the machine.

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Electronics assembly line

Supplies regulated air to pick-and-place and screwdriver stations along an electronics assembly line, where the external gauge supports quick line-side checks.

factory

Injection molding auxiliary air

Feeds auxiliary pneumatic functions on an injection molding machine, such as core pulls and ejector assist, with a stable, visibly monitored setpoint.

Is the Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30008C1 the Right Regulator?

GR300 is the next size step above the GR200: same 1/4 inch port code in this model, but the larger 300 body gives more capacity when your demand outgrows a size 200 unit. Note the port remains 1/4 inch here, so check your pipe size against both the body size and the port before ordering. The standard type adjusts from 0.05 to 0.9 MPa; the L low-pressure type covers up to 0.4 MPa if your setpoint sits below that. The C1 gauge choice gives you an external round gauge with an MPa scale; if your team reads in psi or bar, scale codes 2 and 3 are available, and an embedded square gauge is the alternative style. If upstream pressure dips could disturb your setting, the K version with a reverse valve is available.

Thread is PT as the standard; G (BSPP) and NPT are catalogue options. AirTAC publishes flow for the GR series as curves, not a single rated number, so ask us to confirm sizing against the application before ordering.

Quick checklist

  • ✓ Body size for your peak flow (PT1/4" 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-GR30008C1 FAQ

AirTAC publishes regulator flow as performance curves across inlet pressures and setpoints, not as a single rated figure, so we do not quote one number. Tell us your inlet pressure, setpoint and air demand, and we will confirm the flow figures from the datasheet on request so you can verify the size 300 unit is right.

C specifies an external round pressure gauge, and the scale code 1 means that gauge reads in MPa. If your team prefers psi or bar, scale codes 2 and 3 are available, and an embedded square gauge is the other style. Without a gauge code the regulator still adjusts from 0.05 to 0.9 MPa; you simply lose the visual reference.

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Request a Quote for Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30008C1

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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