The AirTAC GR40010JC2GK AirTAC Air Pressure Regulator, G3/8 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 GR40010JC2GK is an AirTAC GR400 air pressure regulator: a regulation-only unit with no filter element and no bowl, built to hold a steady downstream pressure from a compressed-air supply. This configuration is the 400 size with a G3/8 (BSPP) port, the standard 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 operating temperature of -20 to 70 C. The code specifies an external round pressure gauge with a psi scale, a built-in reverse (check) valve that lets downstream air back-flow past the regulator, and no mounting bracket - the GR body is also panel-mountable where a fixed installation is preferred.
This is a genuine AirTAC part. The GR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and can be ordered with different gauge scales (MPa, psi or bar), a low-pressure type (up to 0.4 MPa), a bracket, and PT, G or NPT threads. Because flow is published as curves rather than a single rated figure, we confirm the datasheet and flow figures for your application on request.
| Model | GR40010JC2GK AirTAC Air Pressure Regulator, G3/8 |
|---|---|
| Series | GR400 pressure regulator |
| Port size | PT3/8" (G (BSPP) 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 — round, psi 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). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| G | G (BSPP) 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, repeatable downstream pressure for a bench pneumatic press or clamping fixture, with the round psi gauge giving the operator a direct readout at the machine.
Feed packaging and case-erector cylinders from a regulated branch so gripper and pusher strokes stay consistent across shifts, with the check valve protecting the setting from back-flow.
Drop the header pressure to a safe working level at a 3/8 in point-of-use takeoff on a production floor, panel-mounted or bracket-free as the installation allows.
Choose the GR size by the port and flow step your line needs: 200 up to 1/4 in, 300 up to 3/8 in, 400 up to 1/2 in, 600 up to 1 in - this unit is the 400 size with a G3/8 port. Pick the gauge scale to match your plant standard (MPa, psi or bar); this code carries a round psi gauge. Decide on the reverse (check) valve: fitted here (code K), it allows downstream back-flow, which matters on circuits with cylinders or reservoirs that must vent or hold independently of the setting. Thread is G (BSPP) on this code; PT is the catalogue standard and NPT is available to order. A bracket is omitted on this code, and the GR can be panel-mounted instead. Flow is published as curves, not a single rating, so 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 regulator flow as curves, not as a single rated number, so we do not quote a flow figure here. Tell us your application and we will confirm the flow and datasheet figures for this exact model on request.
K means a reverse (check) valve is fitted, allowing downstream air to back-flow past the regulator. C2 means an external round gauge with a psi scale; MPa and bar scales are available to order, and a square embedded gauge is the alternative style.
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.