The AirTAC GR300-08LC2T 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 - 0.4 MPa (7 - 58 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 GR300-08LC2T is an AirTAC GR-series air pressure regulator: it does one job, holding a stable downstream pressure from your compressed-air supply. This 300-size unit is configured in the low-pressure type (L), so its setting range goes up to 0.4 MPa, and it carries an external round pressure gauge on the psi scale (C2). The 08 port is NPT1/4; PT is the standard thread for this series and G or NPT are the catalogue options to order, so specify the thread you need when ordering. A mounting bracket is included, and the GR body is also panel-mountable.
This is a genuine AirTAC part. The GR family spans sizes 200, 300, 400 and 600 with ports from 1/8" to 1", standard and low-pressure types, gauge and no-gauge builds, and an optional reverse/check valve. Flow for this series is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures against your application before you order.
| Model | GR300-08LC2T AirTAC Air Pressure Regulator NPT1/4 |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT1/4" (NPT thread) |
| Regulating range | 0.05 - 0.4 MPa (7 - 58 psi) |
| Pressure type | Low-pressure 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 — round, psi 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". |
| L | Low-pressure type — 0.05 - 0.4 MPa (7 - 58 psi). Blank is standard, L is the low-pressure type. |
| (blank) | Fixing bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 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 - 0.4 MPa (7 - 58 psi) |
|---|---|
| One size down | GR200 |
| One size up | GR400 |
| Line order | Filter first, then regulator, then lubricator |
Set a steady, low supply pressure to spray guns and air-assisted applicators on a finishing line, where the coating process calls for pressures within the low-pressure range rather than full line pressure.
Regulate instrument air to bench-top test rigs, pneumatic lab fixtures and calibration stations that require a gentle, repeatable low-pressure supply from the shop air system.
Feed low-pressure actuators, clamps and vacuum-generator supplies on packaging and labelling machines, keeping the delicate circuit isolated from the higher main-line pressure.
Choose the GR size by the port and flow step you need: 200, 300, 400 or 600, with ports stepping from 1/8" up to 1". This unit is the low-pressure type, correct where the working pressure must stay at or below 0.4 MPa; the standard GR covers 0.05-0.9 MPa if your setting is higher. Pick the gauge you want: the embedded square gauge is standard, an external round gauge is optional, and scales are available in MPa, psi or bar - this build has the round psi gauge. Thread is PT as standard with G and NPT as orderable options; a bracket is included and the body can also be panel-mounted. Flow for the GR series is published as curves, not a single rating, so send us your application details and we will confirm sizing from 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 GR-series flow as curves in the catalogue, not as a single rated figure, so we do not quote a number. Tell us your application and we will confirm the flow and sizing from the datasheet on request before you order.
The L in the code marks the low-pressure type of the GR series, whose setting range goes up to 0.4 MPa. If your application needs a higher setting, the standard GR type covers 0.05-0.9 MPa - ask us and we will point you to the right build.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business 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.