The AirTAC GR40010LJF2T AirTAC Air Regulator NPT3/8 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 GR40010LJF2T is an AirTAC GR400 series air pressure regulator: it does one job, holding your downstream line pressure steady at the set point. This is the low-pressure (L) type, so its adjustment range tops out at 0.4 MPa, and it carries a fitted square gauge scaled in psi so the setting is visible at the panel. The 3/8 in NPT port suits mid-size supply lines, and maximum inlet pressure is 1.0 MPa (145 psi).
This is a genuine AirTAC part. The GR series spans sizes 200 to 600 with port options from 1/8 in to 1 in, gauge scales in MPa, psi or bar, an optional reverse/check valve, and bracketed or unbracketed mounting (GR is also panel-mountable). GR is the widest-temperature unit in the G family at -20 to 70 C. We confirm flow and datasheet figures on request, since flow is published as curves rather than a single rating.
| Model | GR40010LJF2T AirTAC Air Regulator NPT3/8 Low-Pressure |
|---|---|
| Series | GR400 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 — square, 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.
| GR400 | G-series pressure regulator, 400 body — sets the port range. |
|---|---|
| 10 | Port size PT3/8". This body offers 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). |
| F | Gauge shape: Square. 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 | GR400 · PT3/8" · 0.05 - 0.4 MPa (7 - 58 psi) |
|---|---|
| One size down | GR300 |
| One size up | GR600 |
| Line order | Filter first, then regulator, then lubricator |
Set a steady, low supply pressure for a spray-booth atomising manifold where the process calls for gentle, consistent air rather than full line pressure.
Regulate a bench-mounted pneumatic test rig or sample fixture that operates below 0.4 MPa, with the psi gauge giving a direct readout of the set point.
Feed light-duty cylinders and air bearings on a packaging conveyor that are rated below 0.4 MPa, protecting them from full header pressure.
Pick the GR series size by the flow your line needs - the 400 size with its 3/8 in port is a step up from the 300 for higher-demand circuits - and confirm the exact sizing with us, because flow is published as curves, not a single rating. This low-pressure (L) version regulates up to 0.4 MPa; if your set point is higher, the standard GR type adjusts from 0.05 to 0.9 MPa. Choose the gauge scale (MPa, psi or bar) and whether you want the embedded square gauge or the optional external round gauge. Thread: PT is the standard, with G (BSPP) and NPT as order options - this unit is NPT. The J suffix means no mounting bracket; add a bracket code if you need one.
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 line size and demand and we will confirm the flow from the datasheet for this exact model on request before you order.
The L in the code marks the low-pressure type, whose adjustment range tops out at 0.4 MPa. If you need to set higher pressures, choose a standard GR unit, which adjusts from 0.05 to 0.9 MPa - the same size and port are available in that version.
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.