The AirTAC GR30010LJC2K AirTAC Low-Pressure Air 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 GR30010LJC2K is an AirTAC GR-series air pressure regulator in the 300 size with a PT3/8 port. This is the low-pressure type (code L), so the outlet pressure is adjusted within a range of up to 0.4 MPa, suiting compressed-air circuits that only need moderate setting pressures. A round pressure gauge scaled in psi is fitted (code C2), and a reverse/check valve (code K) is included. No mounting bracket is supplied with this code (J); the GR body can also be panel-mounted.
This is a genuine AirTAC part. The GR family is offered in 200, 300, 400 and 600 sizes covering ports from 1/8 to 1 inch, with standard or low-pressure regulation, gauge or no gauge, an optional reverse valve, and PT, G or NPT threads 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 ask us to confirm the datasheet figures for your application.
| Model | GR30010LJC2K AirTAC Low-Pressure Air 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 | 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. |
| 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. |
| 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 |
Set a gentle, stable supply pressure for paint guns and air-assisted applicators that are rated below normal shop line pressure, helping protect finish quality on the paint line.
Regulate air to low-pressure clamp and hold-down cylinders on a carton-sealing or wrapping conveyor so delicate packs are held securely without being crushed.
Trim the pressure feeding low-pressure jet, blowing and cleaning functions on weaving or spinning machinery, with the fitted check valve holding the setting against line backflow.
Choose the GR size (200/300/400/600) and port to match the line and the flow your circuit needs - flow is published as curves, not a single rating, so ask us to confirm sizing before ordering. Pick standard or low-pressure (L) regulation: this unit is the low-pressure type, adjusting up to 0.4 MPa. Decide whether a gauge is needed and in which scale (MPa, psi or bar) - this configuration carries a round psi gauge - and whether a reverse/check valve (K) is required. Thread is PT as standard; G and NPT are order options. A bracket is optional (this code has none) and the GR can also be panel-mounted.
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 regulator flow as curves rather than a single rated figure, so we do not quote a number here. Ask us and we will confirm the datasheet flow curve for your inlet pressure and set pressure before you order.
C2 means a round pressure gauge scaled in psi is fitted, and K means a reverse/check valve is included. If you would prefer a square gauge or an MPa or bar scale, that is a different GR300 code - send us your requirements and we will decode the right part.
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.