The AirTAC GR30008JF2K AirTAC Air Pressure Regulator PT1/4 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 GR30008JF2K is an AirTAC GR-series air pressure regulator: it does one job, holding your downstream pressure steady at the setting you choose. This GR300 configuration is the 300 size with a PT1/4 (1/4 in) port, standard pressure type, and a regulation range of 0.05-0.9 MPa (7-130 psi) against a maximum inlet pressure of 1.0 MPa (145 psi). It comes with an embedded square pressure gauge reading in psi, and the K in the code means a reverse (check) valve is fitted, so downstream pressure is held if the upstream supply drops. The J code means no mounting bracket is supplied; the GR body is also panel-mountable. Operating temperature is -20 to 70 C, wider than the rest of the G family, and the medium is compressed air only.
This is a genuine AirTAC part. The GR line spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and can be ordered with G (BSPP) or NPT threads instead of PT, with or without a gauge in MPa, psi or bar scales, with a low-pressure type (up to 0.4 MPa), with or without the reverse valve, and with or without a bracket. Flow for this regulator is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GR30008JF2K AirTAC Air Pressure Regulator PT1/4 |
|---|---|
| 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 | 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 | 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.
| 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. |
| (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.
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 |
On a bench-top pneumatic press or clamping fixture, the GR30008JF2K holds the cylinder working pressure steady at the setpoint the operator chooses, with the check valve keeping the circuit pressurised if the main supply dips mid-cycle.
On a cartoning or case-packing line, this regulator feeds the sealing and ejector cylinders from the plant air ring main, letting a technician set a repeatable 1/4-in branch pressure and read it at a glance on the psi gauge.
On a test bench or laboratory rig where instruments and small actuators need a stable, adjustable air supply, the wide -20 to 70 C operating range and fine 0.05-0.9 MPa adjustment make this GR300 a dependable set-and-read regulator.
Start with the port step: GR comes in sizes 200, 300, 400 and 600, with ports from 1/8 in up to 1 in, and the larger the size the larger the port and the greater the flow capacity. This unit is the 300 size at PT1/4. Set your downstream working pressure inside the 0.05-0.9 MPa (7-130 psi) standard range; if your circuit runs below that, the L low-pressure type (up to 0.4 MPa) is the decodable alternative. Choose the gauge scale you want - MPa, psi or bar - and square (embedded) or round (external) style; this unit ships with the square psi gauge. Decide whether you want the K reverse/check valve (fitted here) to hold downstream pressure on supply loss, and whether to add the mounting bracket (not fitted here; the GR can also be panel-mounted). Thread is PT as standard, with G (BSPP) and NPT as order options. One honest note before you order: flow is published as curves, not a single rating, so send us your flow and pressure requirements and we will confirm sizing against the datasheet before you commit.
Quick checklist
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 publishes regulator flow as characteristic curves rather than a single rated figure, so we do not quote a rated l/min, m3/h or SCFM number for this unit. Tell us your upstream pressure, set pressure and required flow, and we will confirm the sizing from the GR300 datasheet curves on request before you order.
In this code, F is the square gauge style and 2 is the psi scale, so the unit arrives with an embedded square gauge reading in psi (MPa and bar scales are order options). The trailing K means a reverse (check) valve is fitted, which holds downstream pressure if the upstream supply is lost. J means no mounting bracket is included, though the GR body is also panel-mountable, and the thread is PT as standard with G (BSPP) and NPT available to order.
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.