The AirTAC GR40010LF2G AirTAC Low-Pressure Regulator G3/8 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 GR40010LF2G is an AirTAC GR400 air pressure regulator in the 400 size with a G3/8 (3/8 in) G-thread port. It is the low-pressure (L) type, so its adjustment range tops out at 0.4 MPa, and it carries an embedded square gauge scaled in psi. As a pure regulator it does one job only: holding a steady downstream pressure from your compressed-air supply. Maximum inlet pressure is 1.0 MPa (145 psi), and the unit operates from -20 to 70 C - the widest temperature window in the G series.
This is a genuine AirTAC part. The GR family spans 200, 300, 400 and 600 sizes with ports from 1/8 to 1 inch, standard or low-pressure regulation, an embedded square gauge or an optional external round gauge in MPa, psi or bar scales, an optional reverse/check valve (K), and bracket or panel mounting. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures against your application.
| Model | GR40010LF2G AirTAC Low-Pressure Regulator G3/8 |
|---|---|
| Series | GR400 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 — 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. |
| (blank) | Fixing bracket included. |
| (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. |
| 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 | 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 |
Regulating low-pressure air fed to spray guns in a paint finishing booth, where the L-type 0.4 MPa ceiling keeps the set point inside the low-pressure band the gun maker calls for, read directly off the square psi gauge.
Supplying steady low-pressure air to pneumatic sealing and tucking heads on a packaging conveyor, where operators watch the embedded psi gauge to hold the sealing set point through the shift.
Feeding low-pressure pilot air to directional valve stacks on a process skid; the included bracket and the panel-mountable GR body make it straightforward to build into the control panel.
Within GR400 the real choices are the port step (here 3/8 in G thread; the 06 to 25 codes run from 1/8 to 1 inch) matched to your line size and expected flow; the regulator type - this L code is the low-pressure variant adjusting up to 0.4 MPa, while the standard GR covers 0.05-0.9 MPa; the gauge (an embedded square gauge in psi is fitted here, with an external round gauge optional in MPa, psi or bar); the thread (PT is the standard, with G and NPT as order options); and the bracket, which is included on this code, with panel mounting also possible on GR. Flow is published as curves, not a single rating, so ask us to confirm sizing against your application before ordering.
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 GR400 flow as curves rather than a single rated figure, so there is no one l/min or SCFM number we can quote honestly. Send us your inlet pressure, set pressure and expected air consumption, and we will confirm the datasheet curve figures for your application before you order.
It marks the low-pressure regulator type: adjustment up to 0.4 MPa instead of the standard GR range of 0.05-0.9 MPa. Choose it when your process set point sits in the lower band; the maximum inlet pressure is still 1.0 MPa (145 psi), and the unit runs from -20 to 70 C.
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.