The AirTAC GR40010JF3TK 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 - 0.9 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 GR40010JF3TK is an AirTAC GR-series air pressure regulator: it does one job, holding downstream pressure steady at the value you set, and it contains no filter, no bowl and no lubricator. This 400-size unit is decodes to a 3/8 in NPT port, a standard-type regulator with an adjustment range of 0.05-0.9 MPa (7-130 psi), an embedded square gauge scaled in bar, and a built-in reverse (check) valve that lets downstream air bleed back past the regulator when the supply is vented. No mounting bracket is fitted, and the GR body is also panel-mountable.
This is a genuine AirTAC part. The GR family spans 200, 300, 400 and 600 sizes with ports from 1/8 to 1 in, gauge scales in MPa, psi or bar, optional low-pressure regulation up to 0.4 MPa, and G or NPT thread variants to order. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the GR temperature range is -20 to 70 C. We confirm flow and datasheet figures on request - ask us before ordering.
| Model | GR40010JF3TK AirTAC Air Pressure Regulator NPT3/8 |
|---|---|
| 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 | Supplied without bracket |
| 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. |
| J | Supplied without bracket. |
| (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 |
A regulator set to the clamp pressure holds gripping force steady on a robotic welding fixture, with the check valve letting the clamp circuit vent downstream when the supply is shut off.
Feeding pusher and divertor cylinders on a packaging conveyor, the regulator keeps actuator pressure consistent so stroke speed and gentle product handling stay repeatable through the shift.
On a CNC machining centre, the regulator sets the supply pressure for tool-clamp and part-clamp circuits independently of the shop air main, with the bar gauge giving a readable setpoint.
Size the GR by port and required flow: 200, 300, 400 and 600 step up in both port size and flow capacity, so a 400 with a 3/8 in NPT port suits mid-range cylinder and actuator circuits. Set the working pressure with the adjustment range of 0.05-0.9 MPa (7-130 psi); if your circuit runs below that, the GR low-pressure type (code L) regulates up to 0.4 MPa. Choose the gauge scale - MPa, psi or bar - to match the rest of your panel; this unit carries the embedded square gauge in bar, and an external round gauge is optional. Thread is a decodable choice: PT is the catalogue standard, with G (BSPP) and NPT as order options - this unit is NPT. The J code means no mounting bracket is fitted; order a bracket variant if you need one, or use the panel-mount option. The K code adds a reverse (check) valve, useful where you want downstream air to vent back through the regulator.
One honest note on sizing: AirTAC publishes GR flow as curves, not a single rated figure, so we do not quote a flow number. Ask us to confirm the curve 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-series flow as performance curves rather than a single rated number, so we do not state a flow figure, Cv or SCFM value. Send us your application details and we will confirm the flow curve and sizing from the datasheet on request before you order.
The F in the code means an embedded square gauge is fitted, scaled in bar (scale 3); MPa and psi scales and an external round gauge are the other catalogue options. The K means a reverse (check) valve is built in, allowing downstream air to flow back through the regulator when the upstream supply is vented.
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.