The AirTAC GR400-10T AirTAC Air Pressure Regulator 3/8 in NPT is a genuine G-series air pressure regulator. It holds a stable downstream pressure over the range 0.05 - 0.9 MPa (7 - 130 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 AirTAC GR400-10T is a genuine AirTAC air pressure regulator for compressed air, built on the 400 size body with a 3/8 in NPT port. This configuration is the standard type with a regulation range of 0.05-0.9 MPa (7-130 psi) and a maximum inlet pressure of 1.0 MPa (145 psi). It ships as coded with an embedded square gauge scaled in bar, a reverse (check) valve fitted to hold downstream pressure, and a mounting bracket included; the GR body is also panel-mountable. Operating temperature is -20 to 70 C, wider than the rest of the G family, so it suits colder installations. As a regulator it performs pressure control only - there is no filter, no bowl and no lubrication function on this unit.
This is a genuine AirTAC part from the GR series, which spans the 200, 300, 400 and 600 sizes with 1/8 in to 1 in ports, optional G (BSPP) or NPT threads in place of the PT standard, a low-pressure type limited to 0.4 MPa, and gauge or check-valve options. Flow is published in the catalogue as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GR400-10T AirTAC Air Pressure Regulator 3/8 in NPT |
|---|---|
| Series | GR400 pressure regulator |
| Port size | PT3/8" (NPT thread) |
| Regulating range | 0.05 - 0.9 MPa (7 - 130 psi) |
| Pressure type | Standard 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 — square, 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". |
| (blank) | Standard type — 0.05 - 0.9 MPa (7 - 130 psi). Blank is standard, L is the low-pressure type. |
| (blank) | Fixing bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. 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 - 0.9 MPa (7 - 130 psi) |
|---|---|
| One size down | GR300 |
| One size up | GR600 |
| Line order | Filter first, then regulator, then lubricator |
Set a stable working pressure for a bench-mounted pneumatic press or clamping fixture: the regulator holds the downstream setting while the check valve keeps the circuit from bleeding down if the upstream supply drops.
Feed a carton-sealing or wrapping machine's actuator circuit at a controlled pressure, with the bar-scaled square gauge giving operators a local setpoint readout at the machine.
Regulate the air to conveyor stop gates and diverters so cylinder speed and seating force stay consistent across shifts, with the bracket allowing clean mounting beside the valve manifold.
Step up or down the GR size ladder (200/300/400/600) to match the port and the flow your line needs - larger sizes carry larger ports and more flow, and the 400 size here takes a 3/8 in port. Choose the thread: PT is the standard, with G (BSPP) and NPT as orderable options, so order the T suffix only when NPT is what your pipework uses. Decide on the gauge: the embedded square gauge is standard and can be scaled in MPa, psi or bar (this unit is bar); an external round gauge is optional. Add K if you want the reverse/check valve fitted, choose the standard type or the L low-pressure type (up to 0.4 MPa), and note that a bracket is included unless you order the J no-bracket version. Flow is published as curves, not a single rating, so send us your application details 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 in the catalogue rather than a single rated figure, so no one number is quoted here. Tell us your inlet pressure, set pressure and expected air demand, and we will confirm the datasheet curve figures for this unit on request before you order.
K means a reverse (check) valve is fitted, so downstream pressure is held if the upstream supply is lost. F3 means the embedded square gauge is fitted and scaled in bar; MPa and psi scales are available as order options, and an external round gauge is optional.
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.