The AirTAC GR400-15T 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, ordered without a 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 GR400-15T is an AirTAC GR-series air pressure regulator for compressed air only. It does one job: it holds a stable downstream working pressure from the 0.05-0.9 MPa (7-130 psi) adjustment range while tolerating up to 1.0 MPa (145 psi) at the inlet. This 400-size unit is specified with a 1/2 in NPT port (PT is the standard thread; G and NPT are order options), the standard regulator type, no fitted gauge, no reverse/check valve, and no mounting bracket. As a regulator it contains no filter, no bowl and no drain, and it operates across -20 to 70 C - a wider temperature window than the rest of the G-series families.
This is a genuine AirTAC part. The GR line spans sizes 200, 300, 400 and 600 so you can step port size and flow capacity up or down as your line demands, with options including a low-pressure type (L, up to 0.4 MPa), an embedded square gauge or external round gauge in MPa, psi or bar scales, a reverse/check valve (K), a mounting bracket, and panel mounting. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and flow figures for your application on request.
| Model | GR400-15T 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 | Not fitted |
| 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. |
| N | No pressure gauge (N). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 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 |
Set and hold the working pressure feeding a pneumatic press or clamping cylinder, so the forming or clinching force stays repeatable shift after shift. The 1/2 in NPT port suits the main supply run to the press station.
Regulate the air feeding a cartoning or wrapping machine's cylinders and actuators, keeping seal and jaw pressures consistent as the factory header pressure wanders through the day.
Feed a robotic end-of-arm gripper at a fixed, gentle pressure so delicate parts are held without crushing, with the regulator mounted at the gripper valve manifold on the cell's air drop.
Start with the port and size step: GR comes in 200, 300, 400 and 600, and the right step is set by the pipe size and the flow your circuit needs - this unit is 400 size with a 1/2 in NPT port. Then decide the options that change the part number: a fitted gauge (square embedded or round external, scaled in MPa, psi or bar) or none; a reverse/check valve (K) if the downstream circuit needs one; a mounting bracket (J deletes it) or panel mounting; and the thread - PT is the standard, with G (BSPP) and NPT as order options. If your working pressure never exceeds 0.4 MPa, the low-pressure L type is the dedicated choice.
On sizing, be honest with yourself about flow: AirTAC publishes GR flow as curves, not a single rated number, so there is no one flow figure to quote here. Send us your line pressure, set pressure and expected air demand, and we will confirm the correct size against the datasheet curves 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 performance curves rather than a single rated figure, so there is no one flow number we can honestly quote. Tell us your inlet pressure, set pressure and air demand, and we will confirm the sizing against the datasheet curves on request before you order.
Yes. GR units can be ordered with an embedded square gauge or an external round gauge, scaled in MPa, psi or bar; the N in this code simply means none is fitted. On thread, PT is the standard, while G (BSPP) and NPT are catalogue order options - this unit is specified with the NPT option on a 1/2 in port.
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.