The AirTAC GR30010LC2K AirTAC Regulator PT3/8 Low-Pressure, psi Gauge is a genuine G-series air pressure regulator. It holds a stable downstream pressure over the range 0.05 - 0.4 MPa (7 - 58 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 GR30010LC2K is a genuine AirTAC GR-series air pressure regulator: it does one job, holding downstream pressure steady, and carries no filter, bowl or lubricator. This 300-size unit is built around a PT3/8 port and is the low-pressure (L) type, so its regulation range tops out at 0.4 MPa - the right choice when the circuit must never see full-line pressure. It is supplied with an external round gauge scaled in psi, and a reverse/check valve (K) is fitted so downstream pressure is held if the upstream supply drops.
As a genuine AirTAC part, the GR300 series spans sizes 200 to 600 with port options from 1/8" to 1", and threads in PT (standard), G or NPT to order. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -20 to 70 C, wider than the rest of the G family. Flow is published as curves rather than a single rating, so we confirm the datasheet figures for your application on request.
| Model | GR30010LC2K AirTAC Regulator PT3/8 Low-Pressure, psi Gauge |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT3/8" (PT thread) |
| Regulating range | 0.05 - 0.4 MPa (7 - 58 psi) |
| Pressure type | Low-pressure 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, psi 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". |
| L | Low-pressure type — 0.05 - 0.4 MPa (7 - 58 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. |
| 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. |
| 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 - 0.4 MPa (7 - 58 psi) |
|---|---|
| One size down | GR200 |
| One size up | GR400 |
| Line order | Filter first, then regulator, then lubricator |
On a carton-sealing or wrapping machine where delicate actuation must never exceed 0.4 MPa, the low-pressure L type sets a safe ceiling, the psi gauge gives the operator a direct readout, and the check valve holds the setting through brief supply dips.
Feeding positioners or pilot-operated process valves that need a stable, limited pilot pressure: the regulator holds the setpoint steady, the psi gauge allows verification at the panel, and the 3/8" port suits a dedicated pilot line.
On a factory distribution loop serving several workstations, a 300-size GR drops the branch to a controlled pressure downstream of the main filter set, with the check valve preventing back-feed between branches when one section is isolated.
Sizing a GR comes down to the port step against the air demand of the circuit - step up from 300 to 400 when the line feeds more cylinders or valves - and to the pressure ceiling: choose the low-pressure L type only when settings must stay at or below 0.4 MPa, otherwise the standard GR covers 0.05-0.9 MPa. On this model the psi-scaled round gauge is already selected; MPa or bar scales and the embedded square gauge are the other catalogue choices. The fitted K reverse/check valve is worth keeping on circuits where a supply failure must not dump the downstream pressure.
Thread is PT as standard; G (BSPP) and NPT are order options, so match the port thread to your existing fittings before ordering. A mounting bracket is included, and GR also panel-mounts. Because flow is published only as curves and not as a single rated figure, ask us to confirm sizing against your application 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 publishes GR flow as curves, not as a single rated number, so we do not quote a figure that is not in the datasheet. Tell us your line pressure, set pressure and the air demand of the circuit, and we will confirm the flow and sizing from the datasheet on request before you order.
The L in GR30010LC2K marks the low-pressure type, whose adjustment range tops out at 0.4 MPa instead of the standard GR range - use it only where the setpoint must stay low. The K means a reverse (check) valve is fitted, so downstream pressure is retained if the upstream supply is lost. The C2 code is the external round gauge scaled in psi.
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.