The AirTAC GR30008C2G AirTAC Air Pressure Regulator G1/4, psi gauge 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 GR30008C2G is an AirTAC GR-series air pressure regulator: it does one job, holding a steady downstream pressure from a compressed-air supply. This 300-size unit is decoded with a G1/4 (BSPP) port, a standard adjustment range of 0.05-0.9 MPa (7-130 psi), and a round pressure gauge on a psi scale fitted so the setpoint can be read directly at the unit. It is a regulation-only device - there is no filter, no drain bowl and no lubricator in a GR - and it carries a maximum inlet pressure of 1.0 MPa (145 psi) with an operating temperature range of -20 to 70 C, wider than the rest of the G family.
This is a genuine AirTAC part. The GR line is published in four sizes (200, 300, 400, 600) with port sizes stepping from 1/8 in up to 1 in, plus options including a low-pressure type (adjustment up to 0.4 MPa), a reverse/check valve, gauge scales in MPa, psi or bar, and G or NPT thread variants. Flow for this series is published as curves rather than a single rated figure, so we confirm the datasheet and sizing figures on request before you order.
| Model | GR30008C2G AirTAC Air Pressure Regulator G1/4, psi gauge |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT1/4" (G (BSPP) 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 — 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". |
| (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). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| G | G (BSPP) 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 a stable downstream pressure feeding a compact air cylinder on a small assembly press, so the forming or staking force stays repeatable from cycle to cycle.
Regulate the branch line that feeds sealing jaws and clamp actuators on a packaging line, keeping actuator settings consistent as the main header pressure wanders.
Drop the regulator into the valve-manifold panel of a pick-and-place cell to hold the supply pressure the gripper and ejector circuit were designed around.
Start with the port step: GR comes in 200, 300, 400 and 600 sizes with ports from 1/8 in to 1 in, so match the size to the air demand of the circuit rather than only to the existing pipe thread. Set the adjustment range you need - this standard type covers 0.05-0.9 MPa (7-130 psi), while the low-pressure L type covers up to 0.4 MPa. Choose the gauge to suit the operator: this unit has a round psi-scale gauge fitted, and square embedded gauges or MPa/bar scales are the other catalogue combinations. Thread is a decodable choice: PT is the standard, with G (BSPP) and NPT as order options - this unit is the G variant. A mounting bracket is included with the GR, which is also panel-mountable. Because flow is published as curves and not a single rating, 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-series flow as curves, not as a single rated number, so there is no one flow figure we can quote for this 1/4 in regulator. Send us your line pressure, set pressure and air demand and we will confirm the sizing from the datasheet on request before you order.
The GR30008C2G is the variant with a round gauge on a psi scale fitted, so the setpoint is readable at the unit; square embedded gauges and MPa or bar scales are the other catalogue combinations. The port is G (BSPP) thread on this code - PT is the AirTAC standard and NPT is available as an order option.
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.