AirTAC GR400-15 Pressure Regulator (GR40015N)
The AirTAC AirTAC GR400-15 Pressure Regulator (GR40015N) 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.
- TypePressure regulator
- Port sizePT1/2"
- Regulating range0.05 - 0.9 MPa (7 - 130 psi)
- Pressure typeStandard type
- Pressure gaugeNot fitted
- Reflux valveNot fitted
- ThreadPT
- BracketFixing bracket included
About the AirTAC GR400-15 Pressure Regulator (GR40015N)
The AirTAC GR40015N is a genuine AirTAC G-series air pressure regulator: it reduces and holds downstream pressure only - no filter, no bowl, no lubricator. This is the standard type, adjustable from 0.05 to 0.9 MPa (7-130 psi), covering the normal working band of most plant air circuits. The 400 size provides a PT1/2 port as the standard thread (PT, BS 21 taper), a mounting bracket is included, and no pressure gauge is fitted (N).
It is a genuine AirTAC part in the GR400 size family, which steps up in port size and flow capacity. Gauged variants (embedded square gauge in MPa, psi or bar scale, or an external round gauge) and G/NPT thread options are available. AirTAC publishes regulator flow as curves rather than a single rated figure, so we confirm flow and datasheet figures against your application on request.
AirTAC GR400-15 Pressure Regulator (GR40015N) Technical Specifications
| Model | AirTAC GR400-15 Pressure Regulator (GR40015N) |
|---|---|
| Series | GR400 pressure regulator |
| Port size | PT1/2" (PT 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 | 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.
Model Code: AirTAC GR400-15 Pressure Regulator (GR40015N)
| 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. |
| (blank) | Fixing bracket included. |
| 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. |
| (blank) | PT 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.
Size Class
- GR200PT1/8" - PT1/4"
- GR300PT1/4" - PT1/2"
- GR400PT3/8" - PT1/2"
- GR600PT3/4" - PT1"
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 |
Where the AirTAC GR400-15 Pressure Regulator (GR40015N) Is Used
Pneumatic press cylinders
A bench or gantry press driven by air cylinders needs a set pressing force. This half-inch regulator on the cylinder supply line fixes the working pressure so every stroke applies the same force, part after part.
Impact tool air ring main
Impact wrenches and nutrunners on a vehicle assembly bay deliver best torque control from a regulated feed. Mounted on the drop from the half-inch ring main, this unit gives each tool station its correct working pressure.
Carton-sealer clamp cylinders
Case-sealing and taping machines use small cylinders to hold and index cartons. Regulating the machine's air feed with this unit keeps the clamps firm but not crushing, even as plant pressure drifts during the day.
Is the AirTAC GR400-15 Pressure Regulator (GR40015N) the Right Regulator?
Select the 400 size / PT1/2 port for half-inch headers; the GR400 family also steps down and up in port for different flow needs. The standard adjustment range of 0.05-0.9 MPa (7-130 psi) suits most shop-air circuits; the low-pressure L type caps at 0.4 MPa if that is all you need. Gauge is deleted here (N) - choose a gauged GR400 code if you want a set-point readout, in MPa, psi or bar scale. Bracket included; thread is PT standard with G (BSPP) and NPT as order options.
Flow is published as curves, not a single rated number, so ask us to confirm sizing against your application before ordering.
Quick checklist
- ✓ Body size for your peak flow (PT1/2" here)
- ✓ Standard 0.9 MPa or low-pressure 0.4 MPa
- ✓ Gauge fitted, or order N without
- ✓ Gauge shape C round / F square
- ✓ Scale MPa (1), psi (2) or bar (3)
- ✓ Reflux valve needed, order K
Installation & Maintenance Notes
- check Install downstream of the filter, following the airflow arrow.
- check Keep inlet pressure at or below 1.0 MPa (145 psi).
- check Set pressure while air is flowing, then lock the knob.
- check Adjust within 0.05 - 0.9 MPa (7 - 130 psi) only.
- check Operating range -20 to +70 °C.
- check Panel-mount or use the fixing bracket; do not hang it on tubing.
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 GR400-15 Pressure Regulator (GR40015N) FAQ
AirTAC publishes GR regulator flow as curves rather than a single rated figure, so there is no single flow number we can state. Share your inlet pressure, set pressure and air consumption, and we will confirm the sizing from the datasheet curves before you order.
The N in the code means no pressure gauge is fitted; the unit regulates exactly the same. Many builders read pressure on their own downstream gauge or prefer no dial at all. If you want an integral readout, other GR400 codes include the embedded square gauge in MPa, psi or bar scale, or accept an external round gauge.
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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.