AirTAC GR300-08 Pressure Regulator (GR30008F1)
The AirTAC AirTAC GR300-08 Pressure Regulator (GR30008F1) 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 PT1/4" 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 sizePT1/4"
- Regulating range0.05 - 0.9 MPa (7 - 130 psi)
- Pressure typeStandard type
- Pressure gaugeFitted
- Reflux valveNot fitted
- ThreadPT
- BracketFixing bracket included
About the AirTAC GR300-08 Pressure Regulator (GR30008F1)
The AirTAC GR30008F1 is a genuine AirTAC G-series air pressure regulator that reduces and holds a stable downstream pressure from your compressed air supply, with no filtering or lubrication function. This size 300 unit has a PT1/4 port, and the F1 in the code means the embedded square pressure gauge on an MPa scale is fitted. Regulation range is 0.05-0.9 MPa (7-130 psi) with a maximum inlet pressure of 1.0 MPa (145 psi), and the operating temperature range is -20 to 70 C.
This is a genuine AirTAC part in the GR family, which spans sizes 200, 300, 400 and 600 with 1/8" to 1" ports, optional G (BSPP) or NPT threads, round or square gauges in MPa, psi or bar scales, a low-pressure type, and a bracket for mounting. Flow figures for this series are published as curves rather than a single rating, so ask us to confirm the datasheet and sizing for your application on request.
AirTAC GR300-08 Pressure Regulator (GR30008F1) Technical Specifications
| Model | AirTAC GR300-08 Pressure Regulator (GR30008F1) |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT1/4" (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 | 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 GR300-08 Pressure Regulator (GR30008F1)
| GR300 | G-series pressure regulator, 300 body — sets the port range. |
|---|---|
| 08 | Port size PT1/4". This body offers 08 = PT1/4", 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. |
| (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 | GR300 · PT1/4" · 0.05 - 0.9 MPa (7 - 130 psi) |
|---|---|
| One size down | GR200 |
| One size up | GR400 |
| Line order | Filter first, then regulator, then lubricator |
Where the AirTAC GR300-08 Pressure Regulator (GR30008F1) Is Used
Machine air supply on a bottling filler
Drops plant air to the working pressure needed by the filler's cylinder-driven fill valves and capping heads, with the compact square gauge sitting neatly on the machine's valve panel.
Air knife supply on a drying station
Sets the supply pressure to air-knife nozzles that strip wash water from parts on a wash-and-dry station, giving operators a fixed, repeatable setting for consistent drying.
Trailer air system test bench
Provides a controlled, adjustable air supply on a workshop test bench for checking trailer and truck pneumatic components, with the MPa gauge matching the bench's other instruments.
Is the AirTAC GR300-08 Pressure Regulator (GR30008F1) the Right Regulator?
Step the GR size (200/300/400/600) up or down to match your port and the flow your circuit needs - larger sizes mean larger ports and more flow. The PT thread is the standard here; G (BSPP) and NPT versions are catalogue options to order. On gauges, this code takes the embedded square gauge in MPa, while external round gauges in MPa, psi or bar scales are separate codes - choose whichever suits your panel layout and reading units. Flow in this series is published as curves, not a single rated figure, so ask us to confirm sizing against your application before ordering.
Quick checklist
- ✓ Body size for your peak flow (PT1/4" 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 GR300-08 Pressure Regulator (GR30008F1) FAQ
AirTAC publishes regulator flow as performance curves rather than a single rated number, so we do not quote a fixed figure. Ask us to confirm the flow curves and datasheet for the GR30008F1 on request, and we will help you check it against your application before you order.
The F code here means the embedded square gauge built into the unit, reading in MPa; the C codes fit an external round gauge instead, available in MPa, psi or bar scales. Both show the downstream pressure - pick the style and scale that suit your panel and your site's units.
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