The AirTAC GR30008JF2T 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 GR30008JF2T is an AirTAC GR-series air pressure regulator: it does one job, holding a stable downstream pressure from a compressed-air supply, and it contains no filter, bowl or lubricator. This 300-size unit is fitted with 1/4 in NPT ports and carries the trailing T thread code, so it is ordered in the NPT option rather than the PT standard. The embedded square pressure gauge is included, reading in psi, and an external round gauge is available as an option. The J code means no mounting bracket is supplied; GR regulators are also panel-mountable.
This is a genuine AirTAC part. The GR family spans the 200, 300, 400 and 600 sizes with port options from 1/8 in to 1 in, gauge scales in MPa, psi or bar, a low-pressure type variant and an optional reverse/check valve. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulation range is 0.05-0.9 MPa (7-130 psi), and the operating temperature is -20 to 70 C. Flow figures are published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application.
| Model | GR30008JF2T 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 | Supplied without bracket |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -20 to +70 °C |
| Pressure gauge | Fitted — square, 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". |
| (blank) | Standard type — 0.05 - 0.9 MPa (7 - 130 psi). Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. 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 - 0.9 MPa (7 - 130 psi) |
|---|---|
| One size down | GR200 |
| One size up | GR400 |
| Line order | Filter first, then regulator, then lubricator |
Set and hold the supply pressure to pneumatic clamping cylinders on a robotic workholding fixture, so parts are gripped at a consistent, repeatable setting shift after shift.
Regulate the air feeding pilot-operated control valves and actuators on a filling or capping line, keeping the downstream pressure steady as upstream demand fluctuates.
Drop the shop-air pressure to a safe, adjustable level for impact drivers, riveters and other handheld pneumatic tools at a maintenance or repair bench.
Start with the port step: the 300 size takes 1/4 in ports, and moving up to 400 or 600 increases both the port and the flow capacity, so match the size to the air demand of the circuit rather than to the pipe alone. Set the regulation window you need: this standard GR300 covers 0.05-0.9 MPa (7-130 psi), while a low-pressure (L) variant caps at 0.4 MPa. Choose the gauge scale (MPa, psi or bar) and the gauge style (embedded square standard, external round optional). Thread is the other decodable choice: PT is the catalogue standard, with G (BSPP) and NPT as order options - this unit is the NPT version. A J code drops the bracket, and K adds a reverse/check valve. Flow is published as curves, not a single rated figure, so send us your flow and pressure requirements and we will confirm sizing 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 GR regulator flow as performance curves rather than a single rated figure, so there is no one l/min or SCFM number we can quote. Tell us your working pressure and air demand and we will confirm the flow from the datasheet curves for this exact model before you order.
The trailing T in the code selects the NPT thread option. PT is the catalogue standard for the GR series, and G (BSPP) is also available as an order option, so pick the thread that matches your pipework - this unit is specified with 1/4 in NPT ports.
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.