The AirTAC GR40010LC2G AirTAC Air Pressure Regulator G3/8 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 GR40010LC2G is an AirTAC GR-series air pressure regulator: it does one job, holding a stable downstream pressure from a compressed-air supply, and it carries no filter element, no bowl and no lubricator. This unit is the 400 size with a G3/8 (3/8 in) female port, G (BSPP) thread, and the low-pressure type, so its setpoint range tops out at 0.4 MPa. It is built for circuits where you need fine control at reduced pressure rather than full-line settings. A round external gauge scaled in psi is fitted so the setpoint can be read directly, and a mounting bracket is included; the GR body is also panel-mountable.
This is a genuine AirTAC part from the GR range, which spans the 200, 300, 400 and 600 sizes with port options from 1/8 in to 1 in and thread choices of PT (standard), G or NPT. 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 | GR40010LC2G AirTAC Air Pressure Regulator G3/8 Low-Pressure |
|---|---|
| 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 — 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. |
| 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 |
On a CNC fixture line, this GR40010LC2G sits upstream of pneumatic clamps that must be held at a reduced, repeatable pressure rather than full header pressure. The low-pressure type limits the setpoint to 0.4 MPa, and the round psi gauge lets the setter read and lock the holding pressure in familiar units.
In a laboratory or pilot-scale air circuit, instruments and small actuators often need a gentle, stable supply well below plant pressure. This 400-size regulator with a 3/8 in G port drops the line to the required low setting, and the included bracket lets it be mounted beside the bench or panel.
On a packaging machine's air preparation panel, this regulator feeds a low-pressure branch - for example, hold-down or forming stations - while the main line runs at full pressure. The psi-scaled round gauge gives operators a direct readout, and panel mounting keeps the unit integrated with the other G-series components.
Start with the port step: the 400 size here takes a 3/8 in connection, and larger sizes carry more flow, so match the size to the air demand of the circuit rather than to the pipe alone. The low-pressure (L) type is the decodable choice that matters on this unit: it regulates up to 0.4 MPa, so it suits circuits held well below standard line pressure; if you need settings up to 0.9 MPa, choose a standard GR instead. Gauge options are the embedded square gauge (standard) or an external round gauge, with MPa, psi or bar scales - this configuration carries a round psi gauge. Thread is G (BSPP) here; PT is the standard offering and NPT is an order option. A mounting bracket is included, and the GR can also be panel-mounted.
One honest note on sizing: AirTAC publishes regulator flow as curves, not as a single rated number, so we do not quote a flow figure. Send us your application's air demand and we will confirm the correct size 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 regulator flow as performance curves, not as a single rated figure, so we do not state a flow number for this unit. Send us your application's air demand and we will confirm the sizing against the datasheet on request before you order.
The L in the code marks the low-pressure type: its setting range tops out at 0.4 MPa, which suits circuits held well below standard line pressure. The C2 marks an external round gauge with a psi scale, so the setpoint is read directly in psi; MPa and bar scales are the other catalogue options.
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Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business 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.