AirTAC GR400-15 Pressure Regulator (GR40015F1K)
The AirTAC AirTAC GR400-15 Pressure Regulator (GR40015F1K) 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 (GR40015F1K)
GR40015F1K is a genuine AirTAC G-series air pressure regulator in size 400 with a 1/2 in PT port, for compressed air only. It regulates downstream pressure over 0.05-0.9 MPa (7-130 psi) with a maximum inlet pressure of 1.0 MPa (145 psi), and the K option adds a built-in reverse (check) valve so downstream pressure is held rather than venting back through the unit if upstream supply drops. A square gauge on the MPa scale shows the set pressure. It is a regulator only - no filter, bowl or lubricator.
The G series spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in; GR options include G (BSPP) or NPT threads, psi or bar 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 appears in the catalogue as curves, so we confirm datasheet figures and sizing on request.
AirTAC GR400-15 Pressure Regulator (GR40015F1K) Technical Specifications
| Model | AirTAC GR400-15 Pressure Regulator (GR40015F1K) |
|---|---|
| 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, MPa 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 (GR40015F1K)
| 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. |
| 1 | Gauge scale: MPa. 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 (GR40015F1K) Is Used
Clamp circuits that must hold on supply loss
Keep clamp cylinders at set pressure if the upstream air supply is interrupted, using the built-in check valve to block back-flow through the regulator.
Stopper and lift units on conveyor lines
Regulate the air feeding stoppers, lifts and diverters on a conveyor system, with the check valve holding position-related pressure between cycles.
Press fixture counterbalance supply
Set working pressure for counterbalance and support cylinders on a press fixture where back-flow through the supply line must be prevented.
Is the AirTAC GR400-15 Pressure Regulator (GR40015F1K) the Right Regulator?
This is the same size 400, 1/2 in PT regulator as GR40015F1 but with the K suffix specifying the reverse (check) valve - choose it for circuits where downstream pressure must be retained on supply loss. Gauge alternatives are F2 (psi) or F3 (bar), thread alternatives are G (BSPP) or NPT, and J removes the bracket. Because AirTAC publishes flow as curves rather than a single rating, ask us to confirm the curve for this size 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.
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 (GR40015F1K) FAQ
We do not state a rated flow figure because AirTAC publishes regulator performance as curves, not as a single rating. The flow curves and datasheet for this size 400, 1/2 in PT unit are confirmed on request - share your downstream demand and we will verify the sizing with you before you order.
K specifies a built-in reverse (check) valve. It lets downstream pressure hold instead of escaping back through the regulator when upstream supply is removed, which suits clamp, hold and counterbalance circuits. The otherwise identical unit without the valve is ordered as GR40015F1.
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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.