The AirTAC GR40010LC3TK AirTAC Air Pressure Regulator NPT3/8 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 GR40010LC3TK is an AirTAC GR400 series air pressure regulator for compressed air, built for applications that need a controlled set pressure below the standard range: this is the low-pressure (L) type, with an adjustment range up to 0.4 MPa. It carries 3/8 inch NPT ports, a maximum inlet pressure of 1.0 MPa (145 psi), and an operating temperature range of -20 to 70 C, which is wider than the rest of the G-series family. This configuration is ordered with an external round pressure gauge scaled in bar, a reverse/check valve (K) fitted to hold the downstream setting, and the mounting bracket included; the GR body is also panel-mountable. As a pure regulator it performs one job - reducing and holding downstream pressure - with no filter bowl and no lubricator in the unit.
This is a genuine AirTAC part. The GR family is offered in sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, in PT (standard), G (BSPP) or NPT thread, with standard or low-pressure regulation, embedded square or external round gauges in MPa, psi or bar scales, an optional reverse/check valve, and bracket or no-bracket ordering. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GR40010LC3TK AirTAC Air Pressure Regulator NPT3/8 |
|---|---|
| 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 | Fixing bracket included |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -20 to +70 °C |
| Pressure gauge | Fitted — round, bar 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. |
| 3 | Gauge scale: bar. 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 |
Clamp and hold cylinders on carton-sealing or tray-forming lines often need a gentle, repeatable set pressure well below the main header level. This low-pressure GR regulator lets the operator dial the clamping force in from the machine frame, with the round bar gauge giving a clear local reading, while the check valve holds the setting if header pressure dips mid-cycle.
Spray-gun atomising and air-bearing circuits on finishing lines run at low, carefully held pressures. Placed at the booth take-off, this 3/8 inch regulator keeps the downstream pressure stable and independent of shop-air swings, and the bar-scaled gauge lets the line operator verify the set point at a glance during changeover.
Diverter gates, stoppers and pusher cylinders on sorting conveyors frequently run best at reduced pressure to avoid product damage. This GR400 regulator supplies those actuators from the main header at a controlled low setting, and the fitted reverse/check valve prevents backflow from upsetting the adjusted pressure when the upstream supply fluctuates.
Start with the port step: this unit is size 400 with 3/8 inch NPT ports, one step up from the 300 series - pick the size whose flow curve covers your air demand with margin, and we will confirm the curve for your target set pressure on request. Choose the regulator type to match your set point: the standard GR adjusts from 0.05 to 0.9 MPa, while this low-pressure (L) version covers settings up to 0.4 MPa, so it suits circuits that run well below the standard range. The K code adds a reverse/check valve, useful where upstream pressure can drop and you want the downstream setting held. Decide on the gauge: this code carries an external round gauge scaled in bar; square embedded gauges in MPa, psi or bar scales are also available in the family. Thread is NPT here; PT is the catalogue standard and G (BSPP) is also orderable. The bracket is included, and GR can alternatively be panel-mounted. Because flow is published as curves rather than a single rating, ask us to confirm sizing 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.
AirTAC publishes GR regulator flow as performance curves rather than a single rated figure, so we do not quote a rated flow number. Tell us your inlet pressure, set pressure and air demand, and we will confirm the datasheet curve and check the sizing for your application on request before you order.
K means a reverse/check valve is fitted, which holds the downstream setting when upstream pressure falls away. L marks the low-pressure regulator type, with an adjustment range up to 0.4 MPa instead of the standard GR range. The C3 in the code adds an external round gauge scaled in bar, and the trailing T specifies NPT threads; PT is the catalogue standard and G (BSPP) is also orderable.
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.