The AirTAC GR40010LC2K AirTAC Air 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 GR40010LC2K is an AirTAC GR-series air pressure regulator: it does one job, holding a stable downstream pressure from a compressed-air supply, and it contains no filter, no bowl and no lubricator. This unit is the 400 size with a PT3/8 (3/8 in) port, built as the low-pressure type with an adjustment range up to 0.4 MPa, so it suits circuits that need gentle, accurate settings rather than full-line pressure. It carries a round pressure gauge reading in psi, a reverse/check valve is fitted, and the mounting bracket is included; the GR body is also panel-mountable. 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.
This is a genuine AirTAC part. The GR line spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, in standard and low-pressure types, with gauge, thread and valve options to order. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | GR40010LC2K AirTAC Air 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 | Fitted (reverse flow permitted) |
| 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. |
| K | Reverse-flow (reflux) valve fitted. |
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 |
Holds a gentle, repeatable air setting for clamp or hold-down cylinders on a carton or tray line, where full line pressure would crush the product and the psi gauge lets operators verify the setpoint.
Sits in the 3/8 in supply branch feeding a soft-press or forming fixture, keeping the low working pressure the tooling was set up for, with the check valve holding the setting against supply dips.
Regulates the low-pressure air feed to spray or coating equipment on a production line, where a stable reduced pressure keeps application consistent and the psi gauge gives a clear visual reference.
Start with the port step: the 400 size takes a 3/8 in port, and larger sizes carry larger ports and more flow, so match the size to the air demand of the circuit rather than only the existing pipework. This unit is the low-pressure type (code L), limited to 0.4 MPa, so choose the standard GR if your setpoint must go higher. The fitted round gauge reads in psi; square embedded gauges and MPa or bar scales are the other catalogue choices. Thread is PT as standard, with G (BSPP) and NPT available as order options, and the bracket is included. We do not quote a single rated flow number because AirTAC publishes flow as curves only - send us your demand and we will confirm sizing against the datasheet before you order.
Quick checklist
The reflux valve lets air flow back through the regulator, which is useful when downstream volume must vent quickly. A regulator does not remove water or particulate; that is the filter's job.
AirTAC publishes GR flow as curves, not as a single rated number, so we do not quote a figure here. Tell us your port size and air demand and we will confirm the sizing from the datasheet on request before you order.
The L in the code marks the low-pressure type, which adjusts up to 0.4 MPa instead of the standard GR range. It is chosen for circuits that only ever need a reduced setting. Note this is a regulator only: it has no filter, bowl or drain, so pair it with a GF filter if the line needs water and particulate removal.
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.