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AirTAC GR400 · Air Pressure Regulator

Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR40010LC1

The AirTAC Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR40010LC1 is a genuine G-series air pressure regulator. It holds a stable downstream pressure over the range 0.05 - 0.4 MPa (7 - 58 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 - 0.4 MPa (7 - 58 psi)
  • Pressure typeLow-pressure type
  • Pressure gaugeFitted
  • Reflux valveNot fitted
  • ThreadPT
  • BracketFixing bracket included
$67.25 $72.60Save 7% Standard model — usually ships in 3-4 days
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About the Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR40010LC1

The AirTAC GR series is a pure air pressure regulator: it regulates downstream pressure only, with no filter, no bowl and no lubricator. This GR400-10 configuration is the 400 size with 3/8 in. PT ports in the L low-pressure type, which regulates up to 0.4 MPa instead of the standard range, and it carries an external round gauge with an MPa scale (C1). The mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -20 to 70 C.

GR400-10LC1 is a genuine AirTAC part. The G-series regulator family runs from size 200 to 600 with PT (standard), G (BSPP) and NPT thread options, square or round gauges in MPa, psi or bar scales, and a reverse/check valve option; GR pressure loss is low. Flow is published as curves rather than a single rating, so we confirm the datasheet figures for your application on request.

Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR40010LC1 Technical Specifications

ModelAirtac B52-GR Copper-Free Air Source Treatment Unit B52-GR40010LC1
SeriesGR400 pressure regulator
Port sizePT3/8" (PT thread)
Regulating range0.05 - 0.4 MPa (7 - 58 psi)
Pressure typeLow-pressure 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-GR40010LC1

GR400G-series pressure regulator, 400 body — sets the port range.
10Port size PT3/8". This body offers 10 = PT3/8", 15 = PT1/2".
LLow-pressure type — 0.05 - 0.4 MPa (7 - 58 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 modelGR400 · PT3/8" · 0.05 - 0.4 MPa (7 - 58 psi)
One size downGR300
One size upGR600
Line orderFilter first, then regulator, then lubricator

Where the Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR40010LC1 Is Used

air

Spray booth gun supply

Set a low, steady working pressure at the booth drop feeding spray guns, where low-pressure regulation is the whole job of the unit.

science

Laboratory air bench

Feed low-pressure regulated air to benchtop test rigs and lab apparatus that run at gentle setpoints rather than full line pressure.

tune

Low-setpoint process trim

Trim pressure on a low-pressure process circuit, reading the setpoint directly off the round MPa gauge mounted on the regulator.

Is the Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR40010LC1 the Right Regulator?

Pick the L low-pressure type when your setpoint sits below 0.4 MPa and you want finer control in that band; the standard GR400-10 covers 0.05-0.9 MPa if you need higher settings. This unit has a 3/8 in. PT port and comes with the bracket and a round MPa-scale gauge; psi or bar scales and a square gauge are alternative order codes. AirTAC publishes flow as curves, not a single rating, so ask us to confirm sizing against your application before ordering.

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 - 0.4 MPa (7 - 58 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-GR40010LC1 FAQ

AirTAC publishes GR400 flow as curves rather than a single rated figure, so we do not quote one number here. Tell us your inlet pressure and downstream demand and we will confirm the datasheet flow for this size on request.

L is the low-pressure type: it regulates up to 0.4 MPa, while the standard version adjusts over 0.05-0.9 MPa. The C1 suffix adds an external round gauge with an MPa scale, and this code includes the mounting bracket.

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