
The AirTAC B52-GR Copper-Free Air Source Treatment Unit B52-GR30015JC2 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 PT1/2" 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 GR30015JC2 is an AirTAC G-series air pressure regulator: it reduces and holds downstream pressure only - no filtration, no lubrication and no drain bowl. The 300 size carries PT 1/2 in ports, and this configuration is a standard type without a mounting bracket (code J) and with a round external gauge reading in psi (code C2), suited to US shops working in imperial units. Adjustment range is 0.05-0.9 MPa with a maximum working pressure of 1.0 MPa (145 psi), for compressed air only.
This is a genuine AirTAC part. The G-series regulator family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and can be ordered with G or NPT threads, a bracket, a square embedded gauge or a round external gauge in MPa, psi or bar scales, a low-pressure type, or a reverse/check valve. We confirm flow and datasheet figures on request.
| Model | Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30015JC2 |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT1/2" (PT thread) |
| Regulating range | 0.05 - 0.9 MPa (7 - 130 psi) |
| Pressure type | Standard type |
| Bracket | Supplied without bracket |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -20 to +70 °C |
| Pressure gauge | Fitted — round, psi 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. |
|---|---|
| 15 | Port size PT1/2". 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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 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 · PT1/2" · 0.05 - 0.9 MPa (7 - 130 psi) |
|---|---|
| One size down | GR200 |
| One size up | GR400 |
| Line order | Filter first, then regulator, then lubricator |
Holds the set atomizing pressure on a spray-booth gun supply branch where the shop already filters air upstream and only needs regulation at the point of use.
Regulates air to divert and stopper gate cylinders along a package conveyor line, with operators reading setpoints directly in psi.
Sets controlled pressure for core-pull and ejector cylinders on an injection mold served by a 1/2-in pneumatic drop.
Pick the C2 code when your technicians set pressure in psi: the round external gauge is scaled 2 (psi), while MPa (1) and bar (3) scales and the square embedded gauge are the other gauge choices. The 300 size with PT 1/2 in ports suits 1/2-in plumbing; step to 400 or 600 for larger ports and flow capability. The standalone GR adjusts 0.05-0.9 MPa. PT is the standard thread, with G (BSPP) and NPT available to order, and J here means no bracket is included. Flow for the G series is published as curves, not a single rating, so ask us to confirm sizing before ordering.
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.
There is no single rated flow figure: AirTAC publishes G-series performance as flow curves. We will confirm the datasheet and curve for the GR300 size against your application on request before you order.
C2 means a round external gauge with a psi scale. C1 is the same round gauge in MPa, C3 in bar, F gives the square gauge, and N specifies no gauge. Pick the scale your team works in.
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.