The AirTAC GR400-15JC3T AirTAC Air Pressure Regulator NPT1/2 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 PT1/2" 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 GR400-15JC3T is an AirTAC GR400 series air pressure regulator for compressed air, built around pressure regulation only - no filter, no bowl and no lubrication. This 400-size unit is decoded with 1/2 in NPT ports (PT is the standard thread; G and NPT are order options), the standard regulator type, and a maximum inlet pressure of 1.0 MPa (145 psi). The set pressure is adjusted anywhere in the 0.05-0.9 MPa (7-130 psi) range, and the code confirms an external round gauge with bar scale is fitted. The J code means no mounting bracket is supplied, though the GR series is also panel-mountable. Operating temperature is -20 to 70 C, wider than the rest of the G family.
This is a genuine AirTAC part. The GR series spans sizes 200, 300, 400 and 600, with port options from 1/8 in to 1 in, a low-pressure type (L) limited to 0.4 MPa, an optional reverse/check valve (K), gauge scales in MPa, psi or bar, and bracket or no-bracket variants. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and flow figures for your application on request.
| Model | GR400-15JC3T AirTAC Air Pressure Regulator NPT1/2 |
|---|---|
| Series | GR400 pressure regulator |
| Port size | PT1/2" (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 — round, bar 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. |
|---|---|
| 15 | Port size PT1/2". 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. |
| 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. |
| (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 · PT1/2" · 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 bench or C-frame pneumatic press, the GR400-15JC3T sits in the 1/2 in supply line and holds the clamping pressure steady in the 0.05-0.9 MPa window so the workpiece is held consistently cycle after cycle.
On a cartoning or case-packing line, this regulator feeds the cylinder and gripper circuits at a fixed set pressure, keeping seal arms and pushers from slamming at full line pressure.
At a 1/2 in plant air drop serving an assembly cell, the GR400-15JC3T lets each cell set its own downstream pressure independently of the main header, with the round bar gauge giving operators a local reading.
Size and port are the first real choice: the GR series steps through 200, 300, 400 and 600 with larger ports carrying more flow, so match the size to the air demand of the circuit rather than to the pipe alone. This unit arrives with a round gauge scaled in bar; if you prefer MPa or psi, or an embedded square gauge instead, those are catalogue options. Thread is the next decision - PT is the AirTAC standard, with G (BSPP) and NPT available to order as suffixes. You can also specify the low-pressure type (L, up to 0.4 MPa), a reverse/check valve (K), and bracket or no-bracket (J) mounting; GR also panel-mounts. We do not quote a single rated flow number because the catalogue publishes flow as curves only - send us your application details and we will confirm sizing against the datasheet before you order.
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 GR-series flow as curves in the catalogue, not as a single rated number, so we do not quote a flow, Cv or SCFM figure. Tell us your application and we will confirm the flow figures from the datasheet on request before you order.
This unit is fitted with an external round gauge scaled in bar; embedded square gauges and MPa or psi scales are catalogue options. The ports here are 1/2 in NPT - PT is the AirTAC standard thread and G (BSPP) is also available as an order suffix.
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.