AirTAC GR400-15 Pressure Regulator (GR40015F3K)
The AirTAC AirTAC GR400-15 Pressure Regulator (GR40015F3K) 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.
- TypePressure regulator
- Port sizePT1/2"
- Regulating range0.05 - 0.9 MPa (7 - 130 psi)
- Pressure typeStandard type
- Pressure gaugeFitted
- Reflux valveFitted
- ThreadPT
- BracketFixing bracket included
About the AirTAC GR400-15 Pressure Regulator (GR40015F3K)
GR40015F3K is a genuine AirTAC G-series air pressure regulator in size 400 with a 1/2 in PT port, for compressed air only. It holds downstream pressure with an adjustment range of 0.05-0.9 MPa (7-130 psi) and a maximum inlet pressure of 1.0 MPa (145 psi). The K suffix adds a built-in reverse (check) valve, keeping downstream pressure in place if the upstream supply is removed, and a square gauge on the bar scale displays the set point. It provides regulation only - no filter, bowl or lubricator.
G-series regulators come in sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, plus G (BSPP) or NPT threads, MPa or psi gauge scales, a low-pressure type and panel mounting with optional bracket. Operating temperature is -20 to 70 C (non-freezing) and GR pressure loss is low by catalogue. Flow is published as curves rather than a single rating, so we confirm datasheet figures and sizing on request.
AirTAC GR400-15 Pressure Regulator (GR40015F3K) Technical Specifications
| Model | AirTAC GR400-15 Pressure Regulator (GR40015F3K) |
|---|---|
| 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 | Fitted — square, bar 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.
Model Code: AirTAC GR400-15 Pressure Regulator (GR40015F3K)
| 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. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | PT 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.
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 (GR40015F3K) Is Used
Safety-related hold circuits on process lines
Maintain set pressure on actuated gates and hold cylinders in a process line, with the check valve preventing back-flow when supply pressure drops.
Cylinder speed circuits on automation lines
Regulate feed pressure to speed-control and cushion circuits on an automated line, holding the set point through supply fluctuations.
Maintenance-shop test benches
Supply a controlled bar-scale pressure for servicing and function-testing pneumatic cylinders, valves and tools at the maintenance bench.
Is the AirTAC GR400-15 Pressure Regulator (GR40015F3K) the Right Regulator?
Pick this code when you need the size 400, 1/2 in PT regulator with both a bar-scale square gauge (F3) and a reverse check valve (K) for circuits that must hold pressure on supply loss. Otherwise identical versions are GR40015F1 (MPa gauge), GR40015F2 (psi) and the non-valve GR40015F3. Threads are also orderable in G (BSPP) or NPT, and J deletes the bracket. Ask us to confirm the flow curve for this size against your application before ordering, since AirTAC does not publish a single rated figure.
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.
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 GR400-15 Pressure Regulator (GR40015F3K) FAQ
Yes - on request. AirTAC publishes regulator flow as performance curves rather than a single rated number, so this page states no capacity figure. Contact us with your application's downstream demand and we will confirm the datasheet and curves for this size 400, 1/2 in PT unit before you order.
Drop the K suffix: GR40015F3 is the same size 400, 1/2 in PT regulator with the same bar-scale square gauge but no reverse valve. Use the K version when the downstream circuit must hold its pressure if upstream air is removed, and the plain version where back-flow is not a concern.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for AirTAC GR400-15 Pressure Regulator (GR40015F3K)
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.