The AirTAC GR400-10C2G 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 AirTAC GR400-10C2G is a size 400 air pressure regulator for compressed air, fitted with 3/8 inch G (BSPP) female ports. It holds a stable downstream pressure across an adjustment range of 0.05-0.9 MPa (7-130 psi) and carries a maximum inlet pressure of 1.0 MPa (145 psi). This configuration includes an external round pressure gauge reading in psi, and the standard type covers normal-duty regulation. As a pure regulator, the GR does exactly one job - it regulates pressure; it does not filter water or particles and it does not lubricate the air, and it contains no bowl or drain.
This is a genuine AirTAC part from the GR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, optional low-pressure type, an embedded square gauge or external round gauge with MPa, psi or bar scales, a reverse/check valve option, and PT, G or NPT threads. GR units are bracket-mounted as standard and are also panel-mountable. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application on request.
| Model | GR400-10C2G 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 | Fixing bracket included |
| 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 | Not fitted |
| 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). |
| 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. |
| (blank) | No reverse-flow valve (the default). |
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 feeding clamping cylinders and pneumatic presses on a machining cell, so workholding force stays consistent from cycle to cycle. The round psi gauge lets the operator verify the setting at a glance.
Regulate the air feeding sealing bars, grippers and diverters on a packaging line, protecting actuators from header-pressure swings. The 3/8 inch G ports suit the drop lines commonly run to individual machine stations.
Hold the atomizing and trigger air pressure steady at the booth manifold for spray guns and coating applicators, where a drifting supply pressure shows up directly in finish quality. The psi gauge matches typical US spray equipment markings.
Start with the size and port: the 400 size with 3/8 inch ports sits in the middle-upper part of the GR range, so match it against the flow your line actually needs - flow is published as curves, not a single rating, so ask us to confirm sizing against your application before ordering. Choose the gauge to suit your operators: this unit ships with a round external gauge in psi; square embedded gauges and MPa or bar scales are available in the series. Set the thread to match your plumbing: PT is the AirTAC standard, while G (BSPP) and NPT are catalogue options to order - this unit is the G version. Decide whether you need the reverse/check valve option or the low-pressure type (up to 0.4 MPa); this unit is the standard type without the check valve. A mounting bracket is included, and GR can also be panel-mounted. Temperature range is -20 to 70 C, wider than the rest of the G family, which matters if the regulator sees cold intake air.
Quick checklist
Without a reflux valve, air cannot flow back through the regulator — order the K option if reverse flow is required. 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 figure, so we do not quote a Cv, l/min or SCFM number. Tell us your line pressure, set pressure and the air demand of the equipment downstream, and we will confirm the correct size against the datasheet curves on request before you order.
The C2 in the code means this unit is fitted with an external round gauge reading in psi, which suits US-market equipment. Across the GR series you can instead choose the embedded square gauge, or round gauges scaled in MPa or bar - the trailing gauge code on the model number selects the option, and this unit is the standard type with a 0.05-0.9 MPa (7-130 psi) adjustment range.
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.