The AirTAC GR30010LJC2 AirTAC Low-Pressure Regulator, PT3/8 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 GR30010LJC2 is an AirTAC GR-series air pressure regulator: it does one job, holding a stable downstream pressure from a compressed-air supply, and it carries no filter, bowl or lubricator. This is the low-pressure (L) type in the 300 size, so its adjustment range tops out at 0.4 MPa, making it the right choice for circuits that must never see full line pressure. It is built with a PT3/8 port, ships with a round external gauge reading in psi, and has no mounting bracket; the GR body is also panel-mountable.
This is a genuine AirTAC part. The GR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, standard or low-pressure adjustment, gauge or no gauge, G/NPT thread options and bracket choices, so a matching unit exists for most line sizes. Max inlet pressure is 1.0 MPa (145 psi) and the GR works from -20 to 70 C, a wider temperature window than the rest of the G family. Flow is published as curves rather than a single rating, so ask us and we will confirm the figures against your application.
| Model | GR30010LJC2 AirTAC Low-Pressure Regulator, PT3/8 |
|---|---|
| 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 | 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. |
|---|---|
| 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. |
| 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 · 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 spray booth or finishing line, spray guns need a low, steady supply pressure well below full shop air. This low-pressure regulator holds the set point under 0.4 MPa so atomising air stays consistent from the first panel to the last.
Packaging sealers and tapers run short-stroke cylinders that crush or fold flaps. Feeding them through this PT3/8 low-pressure regulator keeps actuator force gentle and repeatable, protecting cartons from over-compression.
A lab air bench serving instruments and small pneumatic fixtures benefits from a dedicated low-pressure zone. This regulator lets technicians set a safe, fixed supply below 0.4 MPa, with the round psi gauge giving a clear local readout.
Start with the port step: this unit is 3/8 (PT10) in the 300 size, so size up or down if your line or expected air demand sits at another port. Because this is the L (low-pressure) type, its set pressure is limited to 0.4 MPa; if your process needs up to 0.9 MPa, choose a standard GR instead. The fitted gauge here is a round external gauge on a psi scale; MPa and bar scales and an embedded square gauge are the other catalogue choices. Thread is PT as standard, with G (BSPP) and NPT available to order, and the J code means no bracket is fitted, though the body can be panel-mounted. Flow is published as curves, not a single rated figure, so send us your application details and we will confirm sizing 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 GR-series flow as curves, not as a single rated figure, so we do not quote a number here. Tell us your line pressure, set pressure and the equipment you are feeding, and we will confirm the flow from the datasheet for your exact condition before you order.
L marks the low-pressure type: its adjustment range tops out at 0.4 MPa instead of the standard GR range, which suits circuits that must stay below full line pressure. The C2 ending means a round external gauge is fitted on a psi scale; MPa and bar scales are also available, and a unit with no gauge can be ordered.
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.