Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30010NK
The AirTAC Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30010NK 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, ordered without a 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 gaugeNot fitted
- Reflux valveFitted
- ThreadPT
- BracketFixing bracket included
About the Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30010NK
The AirTAC GR30010NK is a standard-type air pressure regulator, size 300, with a 3/8 in PT thread as the standard connection, fitted with a reverse (check) valve under the K code. It regulates downstream pressure over 0.05-0.9 MPa (7-130 psi) and the built-in check valve prevents reverse flow back through the unit. It is a regulator only - no filtration, no bowl and no lubrication function. Maximum working (inlet) pressure is 1.0 MPa (145 psi).
This is a genuine AirTAC part, supplied with a mounting bracket as standard; the N code means no gauge is fitted. The GR series spans sizes 200, 300, 400 and 600 with PT, G (BSPP) and NPT thread options in the catalogue. Flow is published as curves rather than a single rating, so we confirm exact flow and datasheet figures on request.
Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30010NK Technical Specifications
| Model | Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30010NK |
|---|---|
| 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 | Not fitted |
| Reflux valve | Fitted (reverse flow permitted) |
| 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.
Model Code: Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30010NK
| 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. |
| N | No pressure gauge (N). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | PT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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 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 |
Where the Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30010NK Is Used
Vertical clamping slide
On a bottling line's vertical clamp cylinders, the check valve holds the regulated pressure on the downstream side when the upstream supply dips, so raised loads do not sink between cycles.
Trailer air tool drops
In a truck-service bay, the GR30010NK on the 3/8 in reel drop lets impact wrenches and ratchets run at a fixed pressure while the check valve blocks backflow when the shop compressor unloads.
Press-to-fit assembly station
On an assembly press where two regulators share a common header, the check valve prevents one branch pressurizing back through the other, keeping each station's set pressure independent.
Is the Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30010NK the Right Regulator?
The K code is the decisive choice here: the built-in reverse check valve suits circuits where backflow through the regulator must be blocked, for example when upstream pressure can momentarily drop below the regulated side. Beyond that, choose size and port - this is size 300 with a 3/8 in PT port, with sizes 200, 400 and 600 and other ports available for higher or lower flow demand. The N code omits the gauge (square embedded or round external gauges are catalogue options in MPa, psi or bar), and a mounting bracket is included. PT is the standard thread; G and NPT are orderable options.
Flow is published as curves, not a single rated number, 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
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.
The reflux valve lets air flow back through the regulator, which is useful when downstream volume must vent quickly. A regulator does not remove water or particulate; that is the filter's job.
Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30010NK FAQ
AirTAC publishes GR-series flow as characteristic curves rather than a single rated figure, so there is no one number to quote. Send us your supply pressure, set pressure and air consumption and we will confirm the sizing from the datasheet curves on request.
K indicates that a reverse (check) valve is fitted inside the regulator, so air cannot flow backwards through it when upstream pressure falls below the regulated side. The plain GR30010N without K has no check valve.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Request a Quote for Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30010NK
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.