The AirTAC GR30008F3T AirTAC Air Pressure Regulator NPT1/4 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.
The GR300-08T is an AirTAC GR-series air pressure regulator, a genuine AirTAC part dedicated to one job: holding a stable, adjustable downstream pressure from your compressed-air supply. This is the 300 size with a 1/4 in NPT thread, the standard regulator type 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 F3 code in this model means an embedded square pressure gauge is fitted, reading in bar; an external round gauge is available as an option, and gauge scales can be ordered in MPa, psi or bar. A mounting bracket is included, and the GR body is also panel-mountable.
GR regulators are offered across the 200, 300, 400 and 600 sizes, so you can step port size up or down as your line requires. Thread options are PT (the standard), G (BSPP) and NPT, and a low-pressure type (L) limited to 0.4 MPa can be ordered where the circuit calls for it. GR units carry no filter, no bowl and no lubricator - regulation only. Because AirTAC publishes flow for this series as curves rather than a single rated figure, we confirm the datasheet and flow figures for your application on request.
| Model | GR30008F3T AirTAC Air Pressure Regulator NPT1/4 |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT1/4" (NPT 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 | 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.
| 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. |
| 3 | Gauge scale: bar. 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 | 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 |
Set and hold the working pressure feeding a bench pneumatic press or clamping fixture, so the operator's setpoint stays put shift after shift. The 1/4 in NPT port suits compact drop lines off a main header, and the included bracket fixes the unit to the machine frame.
Regulate the supply to cylinders and actuators on a cartoning or case-packing line, where a stable downstream pressure keeps cycle behaviour consistent. The embedded square bar gauge gives the line technician a direct read of the set pressure at the machine.
Trim the pressure feeding air tools and small actuators at an assembly or rework bench. Panel-mounting the GR body puts the adjustment and gauge where the operator can reach it, and the 0.05-0.9 MPa range covers typical tool supply settings.
Choose the GR size by port step against the air demand of the circuit: 200, 300, 400 or 600, with ports from 1/8 in up to 1 in. This model is the 300 size with a 1/4 in NPT port. Decide the gauge you want: the embedded square gauge fitted here reads in bar, and MPa or psi scales, or an external round gauge, can be specified instead. Thread is the other real choice - PT is the catalogue standard, with G (BSPP) and NPT as orderable options, which is what the T in this code selects. A mounting bracket is included; GR also panel-mounts. If your line never exceeds 0.4 MPa, ask about the low-pressure L type. One honest note on sizing: flow for the GR series is published as curves, not a single rated number, so send us your application details and we will confirm the right size against the datasheet 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 flow for the GR series as performance curves rather than a single rated figure, so we do not quote a rated flow number for this model. Tell us your inlet pressure, set pressure and the air demand of the circuit, and we will confirm the sizing against the datasheet on request before you order.
F means the embedded square gauge is fitted, and the 3 sets its scale to bar. If you prefer MPa or psi, or an external round gauge instead of the embedded square one, those are orderable options in the GR range - just specify the scale when you enquire. The gauge reads downstream (regulated) pressure only.
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.