The AirTAC GR30010JC2GK AirTAC Air Pressure Regulator G3/8 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 PT3/8" 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 GR30010JC2GK is an AirTAC GR-series air pressure regulator for compressed air, built purely for pressure regulation: it holds your downstream circuit at a set pressure and carries no filter element, no bowl and no drain. This configuration is the 300 size with a G3/8 (BSPP) port, the standard regulator type with an adjustment range of 0.05-0.9 MPa (7-130 psi), a round external pressure gauge scaled in psi, and a reverse/check valve (code K) fitted so downstream pressure is held if the upstream supply drops. It comes without a mounting bracket, and the GR body is also panel-mountable.
This is a genuine AirTAC part from the GR family, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8" to 1", thread options PT (standard), G and NPT, an optional low-pressure type (L, up to 0.4 MPa), gauge scale choices of MPa, psi or bar, and an optional reverse/check valve. Max inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -20 to 70 C, wider than the rest of the G-series. Rated flow is published only as curves, not a single figure, so ask us and we will confirm the datasheet numbers for your application on request.
| Model | GR30010JC2GK AirTAC Air Pressure Regulator G3/8 |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT3/8" (G (BSPP) 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, 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. |
|---|---|
| 10 | Port size PT3/8". 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. |
| 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. |
| 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 · PT3/8" · 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 holding pressure for air-actuated clamps on a stamping or welding press, with the check valve keeping the clamp circuit pressurised if the main supply dips mid-cycle.
Feed carton-sealing and case-packing cylinders from a regulated branch off the shop-air header, with the psi gauge letting operators verify the setpoint at the machine.
Regulate the supply to pneumatic grippers and pick-and-place actuators on a robotic assembly cell, holding a repeatable setpoint independent of header-pressure swings.
Pick the GR size by the port and flow step your line needs: 200, 300, 400 or 600, with ports from 1/8" to 1" - larger sizes carry more flow, which we confirm against the published curves before you order. Choose the gauge scale that suits your shop floor: MPa, psi (this unit) or bar, on the embedded square gauge or the optional external round gauge fitted here. Set the thread to match your plumbing: PT is the standard, with G (BSPP, this unit) and NPT as catalogue options to order. Decide whether you need the reverse/check valve (K) to hold downstream pressure, whether the standard 0.05-0.9 MPa range covers your setpoint or you need the low-pressure L type (up to 0.4 MPa), and whether to add the optional bracket - the GR is also panel-mountable, and this unit is supplied without one. Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application before ordering.
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 GR-series flow only as characteristic curves, not as a single rated number, so we do not quote a rated flow, Cv or SCFM figure. Send us your application details and we will confirm the datasheet flow figures for the 300 size at your conditions on request.
The C2 code on GR30010JC2GK specifies the optional external round pressure gauge scaled in psi. The embedded square gauge is the standard fitting, and gauge scales of MPa, psi or bar can be ordered - just tell us which scale you want when ordering.
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.