
The AirTAC Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30015C1K 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.
GR30015C1K is an AirTAC G-series air pressure regulator: regulation only, with no filter bowl and no lubricator. This size 300 unit carries a 1/2 in G(BSPP) female thread, the C1 suffix specifies an external round pressure gauge with MPa scale, and the K suffix means a built-in reverse (check) valve is fitted. The standard-type regulator adjusts outlet pressure across 0.05-0.9 MPa (7-130 psi) against a maximum inlet pressure of 1.0 MPa (145 psi), on compressed air only, with an operating temperature of -20 to 70 C (non-freezing).
This is a genuine AirTAC part. The G-series regulator range runs from size 200 to size 600 with ports from 1/8 in to 1 in, and options include PT (standard), G or NPT threads, embedded square or external round gauges with MPa, psi or bar scales, a low-pressure type rated up to 0.4 MPa, and the K reverse (check) valve shown here. A bracket is included. Flow data is published as curves rather than a single rating, so ask us to confirm flow and datasheet figures for your application on request.
| Model | Airtac B52-GR Copper-Free Air Source Treatment Unit B52-GR30015C1K |
|---|---|
| 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 | 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. |
|---|---|
| 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. |
| (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 · 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 |
Regulating the air to a small pneumatic press or clamping fixture, where the fitted reverse valve backs up the circuit against downstream back-flow.
Feeding instrument and control cabinets that use air-actuated components, with the round MPa gauge giving a clear local set-pressure reading.
Supplying air-powered tail-lift and dock equipment built to BSPP fittings, holding a steady working pressure from the vehicle's supply line.
Match the size code (200/300/400/600) to the port and flow your circuit needs; size 300 with its 1/2 in port is the mid-range step. Choose the gauge: embedded square or this external round type, with MPa (1), psi (2) or bar (3) scales. PT thread is the standard build; G(BSPP) and NPT are catalogue options to order. Decide on the K suffix: this unit carries the reverse (check) valve, while the same code without K leaves it out. Flow is published as curves, not a single rating, so send us your flow and pressure conditions and we will confirm sizing against the datasheet 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.
Flow for this series is published as curves, not as a single rated figure, so we do not state a number here. Share your inlet pressure, set pressure and demand, and we will confirm the sizing from the datasheet on request.
K specifies that a built-in reverse (check) valve is fitted. The same regulator without the K suffix (a blank in that position) is supplied without the valve - choose the K version only if your circuit calls for it.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 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.