The AirTAC GR30010LC2G AirTAC Air Pressure Regulator G3/8 Low Pressure 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 GR30010LC2G is an AirTAC GR-series air pressure regulator in size 300 with a G3/8 (BSPP) port. This is the low-pressure type, so it regulates outlet pressure up to 0.4 MPa, and it is built for compressed-air lines where the working pressure sits below the standard regulator band. A round pressure gauge with a psi scale is fitted so the set pressure can be read directly at the unit, and the mounting bracket is included; GR regulators of this series can also be panel-mounted. 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.
This is a genuine AirTAC part. The GR line spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and options include standard or low-pressure regulation, embedded square or external round gauges with MPa, psi or bar scales, a reverse/check valve, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | GR30010LC2G AirTAC Air Pressure Regulator G3/8 Low Pressure |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT3/8" (G (BSPP) 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 | 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. |
|---|---|
| 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. |
| G | G (BSPP) 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 · 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 light-duty press or jig where the clamping cylinders must never see full line pressure, this low-pressure regulator holds a gentle, repeatable setpoint below 0.4 MPa, with the round psi gauge letting the operator verify the setting at a glance.
On a cartoning or wrapping line, actuator speed and seal pressure depend on a stable air supply. This size 300 regulator in a 3/8-inch G-threaded drop keeps the machine circuit at a fixed pressure, isolated from swings in the shop-air main.
For a coating, purging or test bench that specifies a controlled air pressure well under 0.4 MPa, the low-pressure GR type gives a narrower, finer working band than a standard regulator, with the psi-scaled gauge for direct setup and checks.
Start with the port step: this unit is size 300 with a G3/8 port, and the GR series steps through 200/300/400/600 with ports from 1/8 to 1 inch, so match the size to the line bore and the flow your circuit needs. Choose the regulator type next: this is the L low-pressure type, regulating up to 0.4 MPa; if your setpoint runs higher, the standard GR type covers up to 0.9 MPa. Gauge options are an embedded square gauge or this external round gauge, with MPa, psi or bar scales - this unit carries the round psi gauge. Thread is G (BSPP) here, with PT as the standard and G/NPT as orderable options, and the bracket is included (GR is also panel-mountable).
One honest note on sizing: regulator flow is published as curves, not a single rated figure, so we cannot quote a number here. Send us your line pressure, set pressure and expected air demand, and we will confirm the correct size against the datasheet curves before you order.
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.
AirTAC publishes regulator flow as curves, not as a single rated figure, so we do not quote a number. Tell us your inlet pressure, set pressure and air demand, and we will confirm the sizing from the datasheet curves on request before you order.
The L in the code marks the low-pressure type, which regulates outlet pressure up to 0.4 MPa. If you need to set higher pressures, the standard GR type (without the L) regulates up to 0.9 MPa; both share the same 1.0 MPa (145 psi) maximum inlet pressure.
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.