The AirTAC GR30010LJC2T AirTAC Low-Pressure Regulator, NPT3/8 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 GR30010LJC2T is an AirTAC GR300 air pressure regulator for compressed air, built purely for regulation: it reduces and holds a steady downstream pressure with no filtering and no lubrication. This is the low-pressure (L) type, so its adjustable range tops out at 0.4 MPa, making it the right pick for circuits that must run well below full line pressure. The 3/8 in port is NPT thread, and a round pressure gauge scaled in psi is fitted so the set point can be read directly. As coded with the J suffix, no mounting bracket is supplied, but the GR body is also panel-mountable.
This is a genuine AirTAC part. The GR line spans four sizes (200, 300, 400 and 600) with ports from 1/8 to 1 inch, standard or low-pressure regulation, gauge choices and scale options, and PT, G or NPT threads. 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 rated figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GR30010LJC2T AirTAC Low-Pressure Regulator, NPT3/8 |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT3/8" (NPT 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. |
| T | NPT 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 fixture or jig that clamps delicate parts, the GR30010LJC2T holds a reduced, stable supply pressure to the clamp cylinders so soft-grip force stays repeatable while the main line runs higher.
On a carton or bag packaging line, this regulator feeds the low-pressure actuators that fold, tuck and press, keeping their set point steady even as other stations on the same compressor draw air.
On a laboratory rig or test bench where instruments and pneumatic controls need a gentle, closely held supply, the low-pressure GR30010LJC2T steps the bench air down to the working range the equipment expects.
Pick the GR size by the port and flow step you need: 200 through 600 cover 1/8 to 1 inch, and the 300 size here gives a 3/8 in port. Choose the low-pressure (L) type only when your set point stays at or below 0.4 MPa; the standard type covers the full 0.05-0.9 MPa range. Gauge options are an embedded square gauge or an external round gauge, in MPa, psi or bar scales - this unit carries a round psi gauge. Thread is PT as standard, with G (BSPP) and NPT as orderable options; this code specifies NPT. The J suffix means no mounting bracket is supplied, and a reverse/check valve can be specified as the K option. Flow for GR regulators is published as curves, not a single rating, so send us your flow and pressure requirements and we will confirm sizing against the datasheet 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 regulator flow as curves rather than a single rated figure, so there is no one rated flow number we can quote. Send us your line pressure, set pressure and required flow, and we will confirm the sizing from the datasheet on request before you order.
L marks the low-pressure type: its adjustable range tops out at 0.4 MPa instead of the standard GR range of 0.05-0.9 MPa. It is the right choice when the downstream circuit must run well below full line pressure. Maximum inlet pressure is still 1.0 MPa (145 psi), and this unit is fitted with a 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.