The AirTAC GR40010LJC1TK AirTAC Regulator NPT 3/8 in 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 GR40010LJC1TK is a genuine AirTAC GR400 air pressure regulator for compressed air, built purely for regulation - it contains no filter, no bowl and no drain. This configuration is the 400 size with a 3/8 in NPT thread, set up as the low-pressure type with an adjustment range up to 0.4 MPa. It comes with an external round gauge on the MPa scale, a reverse (check) valve fitted, and no mounting bracket - the GR series is also panel-mountable, so it can be secured to a control panel or machine frame without one.
GR regulators are available in sizes 200, 300, 400 and 600, with port sizes from 1/8 in to 1 in, PT as the standard thread and G (BSPP) or NPT as order options. You can specify a low-pressure or standard type, an embedded square gauge or an external round gauge on MPa, psi or bar scales, and a reverse valve where backflow protection is needed. Flow is published as curves rather than a single rated figure, so we confirm the datasheet numbers for your application on request.
| Model | GR40010LJC1TK AirTAC Regulator NPT 3/8 in 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 — round, MPa 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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| T | NPT 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 |
Bottle-capping and tray-clamping cylinders on packaging lines often run at reduced pressure to avoid crushing product. This low-pressure GR400 regulator holds the set pressure downstream, with the fitted check valve helping hold the circuit if upstream supply dips.
Spray and atomizing setups in a finishing booth need a steady, moderate supply pressure rather than full line pressure. A dedicated 3/8 in regulator at the station lets the operator set and read the working pressure on the round MPa gauge.
Hold-down jets and product-guiding air blasts on bottling and conveyor lines work best at low, stable pressure. This regulator supplies that branch from the main header, and the check valve prevents backflow into the branch when the line is vented.
Start with the port step: this unit is the 400 size at 3/8 in NPT, and the GR series steps through 200/300/400/600 with ports from 1/8 in to 1 in, so pick the size whose flow curve covers your demand rather than matching pipe size alone. Because this is the low-pressure (L) type, its regulation range tops out at 0.4 MPa - choose the standard GR if you need to regulate up to 0.9 MPa. Decide the gauge: this unit carries an external round gauge on the MPa scale, and psi or bar scales are available as options. Thread is NPT here; PT is the standard and G (BSPP) can be ordered. This unit has no bracket (J), which suits panel or in-line mounting where the GR's panel-mount capability applies.
One honest note on sizing: AirTAC publishes regulator flow as curves, not a single rated number, so we do not quote a flow figure here. Ask us to confirm the datasheet curve for this exact model against your application before ordering.
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.
We do not quote a single rated flow figure, because AirTAC publishes regulator flow as performance curves rather than one number. Send us your application details and we will confirm the datasheet curve for this exact 400-size, 3/8 in model on request, so you can size it with confidence before ordering.
In this code, C1 specifies an external round gauge on the MPa scale and K specifies a factory-fitted reverse (check) valve. Both are real order options on the GR series: you can choose an embedded square gauge instead, select psi or bar scales, or order without the check valve. The L in the code also marks this as the low-pressure type, regulating up to 0.4 MPa rather than the standard range.
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.