The AirTAC GR30008JC1T 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 GR30008JC1T is an AirTAC GR-series air pressure regulator: it does one job, holding a stable downstream pressure from a compressed-air supply. This configuration is the 300 size with a 1/4 in NPT port, the standard regulator type with an adjustment range of 0.05-0.9 MPa (7-130 psi), and a round pressure gauge fitted on the MPa scale so the set point can be read directly at the unit. The trailing J means no mounting bracket is supplied, and as a GR unit it is also panel-mountable. There is no filter, no bowl and no drain on this family - regulation only.
This is a genuine AirTAC part. The GR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, gauge scales in MPa, psi or bar, a low-pressure type option (up to 0.4 MPa), and G(BSPP), NPT or PT threads. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing figures on request.
| Model | GR30008JC1T 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 — round, 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.
| 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). |
| C | Gauge shape: Round. C is round, F is square. |
| 1 | Gauge scale: MPa. 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 a repeatable clamping pressure for workholding cylinders on a CNC fixture, with the fitted MPa gauge letting the setter read the set point at the unit.
Regulate the supply to a robot gripper circuit so pick-and-place jaws close at a consistent pressure, protecting delicate parts from over-gripping.
Feed a stable, reduced pressure to the actuator circuit on a packaging machine, keeping seal-arm and pusher cylinders operating at the pressure the line was set up for.
Start with the port step: the 300 size takes 1/4 in ports, and the larger the size the greater the flow path, so match the size to the air demand of the circuit rather than to the pipe alone. Choose the thread to suit your installation - this unit is NPT, while PT (standard) and G(BSPP) are catalogue options to order. Pick the gauge scale (MPa, psi or bar) to match how your team reads pressure; this configuration carries the round gauge on MPa. Decide whether a mounting bracket is needed - this code omits it, and the GR is also panel-mountable. If the circuit must run below the standard range, the GR low-pressure type (L) covers settings up to 0.4 MPa. Flow is published as curves, not a single rating, so ask us to confirm sizing against your application before ordering.
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 flow as curves, not as a single rated number, so there is no one flow figure we can quote for this 300-size, 1/4 in NPT regulator. Tell us your application and we will confirm the flow and sizing figures from the datasheet on request.
C means a round external gauge is fitted and 1 means it is on the MPa scale. The catalogue also offers psi (2) and bar (3) scales, and the embedded square gauge is the standard alternative - order the code with the scale you want.
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.