The AirTAC GR30010LF2G AirTAC Air Pressure Regulator G3/8 Low-Pressure is a genuine G-series air pressure regulator. It holds a stable downstream pressure over the range 0.05 - 0.4 MPa (7 - 58 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 GR30010LF2G is an AirTAC GR-series air pressure regulator: it does one job, holding a stable downstream pressure from a compressed-air supply. This is the low-pressure (L) type, so the setting range is up to 0.4 MPa - suited to circuits that must not see full line pressure. It carries a 3/8 inch port with G (BSPP) thread, an embedded square gauge reading in psi, and a mounting bracket is included; the GR body is also panel-mountable. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -20 to 70 C. As a pure regulator it contains no filter, no bowl and no drain, so it should sit downstream of filtration where clean air is needed.
This is a genuine AirTAC part. The GR300 is the 300 size within the GR range, which spans 200, 300, 400 and 600 sizes with ports from 1/8 to 1 inch. Catalogue options include the standard regulator in place of this low-pressure type, a reverse/check valve, gauge scales in MPa, psi or bar, an external round gauge, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GR30010LF2G AirTAC Air Pressure Regulator G3/8 Low-Pressure |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT3/8" (G (BSPP) thread) |
| Regulating range | 0.05 - 0.4 MPa (7 - 58 psi) |
| Pressure type | Low-pressure 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 — 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. |
|---|---|
| 10 | Port size PT3/8". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| L | Low-pressure type — 0.05 - 0.4 MPa (7 - 58 psi). Blank is standard, L is the low-pressure type. |
| (blank) | Fixing bracket included. |
| (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. |
| 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 · PT3/8" · 0.05 - 0.4 MPa (7 - 58 psi) |
|---|---|
| One size down | GR200 |
| One size up | GR400 |
| Line order | Filter first, then regulator, then lubricator |
Weld-cell clamping fixtures often run at reduced pressure to avoid distorting thin sheet. A low-pressure GR300 regulator at the cell drop holds the clamp circuit below 0.4 MPa while the shop main runs higher.
On a bottling or canning conveyor, hold-down and gating cylinders work best at gentle pressures so containers are not crushed. This regulator lets the line set a fixed low setting for those actuators independently of the plant main.
A lab test bench that pressurises sample vessels or pneumatic fixtures needs a repeatable, limited supply pressure. The psi-scaled square gauge gives the operator a direct reading while the low-pressure type caps the bench at 0.4 MPa.
Choose the size by the port step and the flow your line needs: GR300 sits at 3/8 inch in the 200/300/400/600 ladder, so step up or down if your piping or air demand differs. Pick the low-pressure (L) type only when your circuit must be limited to 0.4 MPa; otherwise the standard GR covers settings up to 0.9 MPa. Select the gauge scale you want (this unit reads psi; MPa and bar are catalogue options) and match the thread to your pipework - PT is the standard, with G and NPT as orderable options. A bracket is included, and the GR can also be panel-mounted. Flow is published as curves, not a single rating, so send us your application details 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 regulator flow as curves, not as a single rated number, so we do not quote a l/min or SCFM figure. Tell us your application and we will confirm the flow curve and correct sizing from the datasheet on request.
The L in the code marks the low-pressure type: its setting range is up to 0.4 MPa instead of the standard GR range. Choose it for circuits that must be capped low; for general duty up to 0.9 MPa, order the standard GR300 version instead.
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Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business 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.