The AirTAC GR40010LC2 AirTAC Pressure Regulator PT3/8 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 GR40010LC2 is an AirTAC GR-series air pressure regulator in the 400 size with PT3/8 (3/8 in) ports. It is the low-pressure (L) type, so its setting range is up to 0.4 MPa, and it carries a round pressure gauge scaled in psi. As a pure regulator it does one job only: it holds a stable downstream pressure from a compressed-air supply. There is no filter, no bowl and no drain on this unit, and no reverse/check valve is fitted. Maximum inlet pressure is 1.0 MPa (145 psi), and the operating temperature range is -20 to 70 C, wider than the rest of the G family. A mounting bracket is included, and the GR can also be panel-mounted.
This is a genuine AirTAC part. The GR line spans the 200, 300, 400 and 600 sizes with ports from 1/8 to 1 inch, in PT (standard), G or NPT thread, with embedded square or external round gauges in MPa, psi or bar scales, and a low-pressure type option. Flow is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for this exact model before you order.
| Model | GR40010LC2 AirTAC Pressure Regulator PT3/8 Low-Pressure |
|---|---|
| Series | GR400 pressure regulator |
| Port size | PT3/8" (PT 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 — 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.
| 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). |
| 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 | 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 |
On a fixture or jig where clamps must close gently and hold at a low set point, this low-pressure GR regulator sets and holds the downstream pressure on the clamp line, with the psi gauge giving the operator a direct local readout.
On a test bench or lab rig that needs a controlled low-pressure air feed to instruments or a small process, the regulator holds the set point steady while the round psi gauge lets the technician verify the setting at a glance.
Built into a machine's pneumatic panel as a dedicated trim station, this 3/8 in regulator lets maintenance staff dial in and hold a low operating pressure for one downstream branch independently of the main line, with bracket or panel mounting to suit the cabinet.
Pick the size by the port and flow step you need: this 400 unit carries 3/8 in PT ports, and moving up or down a size moves both the port and the flow capacity. Because this is the L (low-pressure) type, it is the right choice only where your set point stays within the up-to-0.4 MPa range; for higher set points choose a standard GR. The C2 code gives you an external round gauge scaled in psi; square embedded gauges and MPa or bar scales are the alternatives. PT is the standard thread, with G (BSPP) and NPT available to order. A bracket is included and panel mounting is possible. Flow for this series is published as curves, not a single rating, so send us your application 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 flow for the GR series as curves, not as a single rated number, so we do not quote a flow figure here. Tell us your line pressure, set point and air demand, and we will confirm the datasheet flow curve for this exact 400-size, 3/8 in model before you order.
The L in the code marks the low-pressure type: its setting range is up to 0.4 MPa, suited to circuits that must run below the standard regulator range. C2 means an external round pressure gauge scaled in psi is fitted; embedded square gauges and MPa or bar scales are available on other GR variants.
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.