
The AirTAC B52-GR Copper-Free Air Source Treatment Unit B52-GR30010C1K 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.
GR30010C1K is a genuine AirTAC G-series air pressure regulator with a reverse (check) valve fitted: regulation only - no filter, no bowl, no lubrication. The 300-size body carries 3/8 inch PT threads, a standard adjusting range of 0.05-0.9 MPa (7-130 psi), and handles up to 1.0 MPa (145 psi) inlet at -20 to 70 C. The C1 code adds an external round gauge on an MPa scale; the K code adds the check valve that holds downstream pressure when the upstream supply is lost.
This is a genuine AirTAC part from the 200 / 300 / 400 / 600 family, available with G (BSPP) or NPT threads and panel-mount capability. Flow performance appears in the AirTAC catalogue as curves rather than a single rated figure, so we confirm the relevant datasheet values for your application on request.
| Model | Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30010C1K |
|---|---|
| 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, MPa scale |
| 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.
| 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. |
| 1 | Gauge 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. |
| 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.
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 |
Feed lift and levelling circuits on commercial-vehicle service equipment where the set pressure must stay in the circuit if the shop supply is shut off between jobs.
Supply diverting and gating cylinders on a sorting conveyor, with the check valve retaining the regulated pressure during brief upstream supply interruptions.
Retrofit a regulated, pressure-retaining supply to clamping fixtures and small pneumatic presses, with the MPa gauge making the set point visible for tool setters.
Select this model when you need both a readable pressure set point and pressure retention: the C1 round MPa gauge shows the setting, and the K check valve keeps the downstream circuit charged through supply dips. If you do not need the check valve, the same unit is GR30010C1; without the gauge it is GR30008NK. PT is the standard thread with G (BSPP) and NPT as orderable options, and a bracket is included as standard (J deletes it).
For sizing, remember GR300 flow is published as curves, not a single rating - give us your demand and we will confirm the datasheet figures before you order.
Quick checklist
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 gives GR300 flow capacity as characteristic curves, not as one rated number, so we will not quote an invented figure. Tell us your port size, line pressure and demand, and we will confirm the applicable flow values from the datasheet on request.
The K code adds a reverse (check) valve: if the upstream supply fails or is shut off, downstream pressure is held instead of bleeding back. Choose GR30010C1K when the circuit must stay charged, and GR30010C1 where back-flow is not a concern.
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.