The AirTAC GR40010JF1TK 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 GR40010JF1TK is an AirTAC GR400 series air pressure regulator for compressed air, built around one job only: holding a stable downstream pressure. This configuration decodes to a 3/8 in NPT port, the standard (non low-pressure) regulator type with an adjustment range of 0.05-0.9 MPa (7-130 psi), a maximum inlet pressure of 1.0 MPa (145 psi), and an embedded square pressure gauge scaled in MPa (psi and bar scales are order options). The trailing K in the code means a reverse/check valve is fitted, and the J means no mounting bracket is included - the GR body is also panel-mountable. As a pure regulator it has no filter bowl and no drain, and it operates from -20 to 70 C, a wider temperature window than the rest of the G family.
This is a genuine AirTAC part from the GR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in and PT, G and NPT thread options. Flow is published as curves rather than a single rated figure, so we confirm the exact flow and datasheet figures for your application on request.
| Model | GR40010JF1TK 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, 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". |
| (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. |
| 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 - 0.9 MPa (7 - 130 psi) |
|---|---|
| One size down | GR300 |
| One size up | GR600 |
| Line order | Filter first, then regulator, then lubricator |
On a workshop press fed from a shop-air header, the GR40010JF1TK holds the downstream pressure the cylinder circuit was designed around, with the check valve holding the setting against momentary supply dips.
On a carton-sealing or wrapping machine with multiple valve islands, this 3/8 in NPT regulator gives each machine a stable, adjustable supply pressure set from its embedded MPa gauge.
Where a main distribution line runs at full header pressure, the GR40010JF1TK at each assembly cell lets operators set and read a lower working pressure for hand tools and clamping fixtures.
Start with the port step: size 400 with a 3/8 in port sits above the 1/4 in GR300 and below the 1/2 in GR400-15, so step up or down a size to match the line and the flow your circuit needs. Because published flow is a set of curves rather than one rated number, ask us to confirm sizing against your application before ordering. Then settle the decodable options: gauge scale (MPa standard here, psi or bar to order), thread (PT is the AirTAC standard, G and NPT are order options - this unit is NPT), the low-pressure L variant (up to 0.4 MPa) if your setpoint sits low, the reverse/check valve (fitted on this unit) where backflow protection matters, and bracket (omitted here; the GR is also panel-mountable).
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 curves, not as a single rated figure, so we do not quote a number here. Tell us your line size and the flow your application needs and we will confirm the correct size from the datasheet on request before you order.
K means a reverse/check valve is fitted, so backflow at the inlet is blocked. F1 means the regulator carries the embedded square pressure gauge scaled in MPa; psi or bar scales, and an external round gauge, are order options.
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.