
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.
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.
| Model | Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30010C3 |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT3/8" (PT thread) |
| Regulating range | 0.05 - 0.9 MPa (7 - 130 psi) |
| Pressure type | Standard type |
| Bracket | Fixing bracket included |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -20 to +70 °C |
| Pressure gauge | Fitted — round, bar scale |
| Reflux valve | Not fitted |
| Mounting | Panel 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.
| GR300 | G-series pressure regulator, 300 body — sets the port range. |
|---|---|
| 10 | Port 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). |
| C | Gauge shape: Round. C is round, F is square. |
| 3 | Gauge 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.
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 model | GR300 · PT3/8" · 0.05 - 0.9 MPa (7 - 130 psi) |
|---|---|
| One size down | GR200 |
| One size up | GR400 |
| Line order | Filter first, then regulator, then lubricator |
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.
Set a stable, repeatable bench pressure for lab pneumatic apparatus and test rigs, with the local round gauge allowing verification without extra instrumentation.
Regulate pressure at workshop air drops feeding hand-held pneumatic tools and test fixtures, using the included bracket for tidy wall or bench mounting.
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
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.
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.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
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.