The AirTAC GR30008LC2G AirTAC Air Pressure Regulator G1/4 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 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 GR30008LC2G is an AirTAC GR-series air pressure regulator: it does one job, holding a stable downstream pressure from your compressed-air supply. This is the low-pressure type, set up for circuits that must run below the standard regulator range, with regulation up to 0.4 MPa. It is built on the GR300 size with a G1/4 (BSPP) port, handles a maximum inlet pressure of 1.0 MPa (145 psi), and works from -20 to 70 C - a wider temperature window than the rest of the G family. A round pressure gauge scaled in psi is fitted so the setpoint can be read directly, and a mounting bracket is included; the GR300 can also be panel-mounted. As a pure regulator it contains no filter and no bowl, so it should sit downstream of filtration where clean air is needed.
This is a genuine AirTAC part. The GR line spans sizes 200, 300, 400 and 600, with port options by size, standard or low-pressure regulation, gauge choices (embedded square gauge as standard, external round gauge optional, in MPa, psi or bar scales), an optional reverse/check valve, 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 | GR30008LC2G AirTAC Air Pressure Regulator G1/4 Low-Pressure |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT1/4" (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 — 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". |
| 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). |
| 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 - 0.4 MPa (7 - 58 psi) |
|---|---|
| One size down | GR200 |
| One size up | GR400 |
| Line order | Filter first, then regulator, then lubricator |
Packaging machines often use gentle clamping or hold-down cylinders that crush product if fed full line pressure. This low-pressure GR300 regulator, set below 0.4 MPa with its psi gauge read directly at the machine, holds the delicate setpoint on a G1/4 drop from the main air header.
Bench-top process equipment and pilot-scale rigs frequently need a stable, low-pressure air feed that must not drift as the compressor cycles. The GR30008LC2G regulates the feed to the rig, tolerates a -20 to 70 C environment, and its round psi gauge lets an operator verify the setpoint at a glance.
Pushers, diverters and hold-down rollers on conveyor lines are typically small cylinders that run at modest pressures. Fed from a G1/4 branch line, this GR300 regulator keeps their operating pressure steady through the shift, with the included bracket allowing tidy mounting beside the valve manifold.
Start with the port step: GR sizes run 200 / 300 / 400 / 600 with 1/8 in to 1 in ports, and the size you pick should follow the air demand of the circuit, not just the existing pipe thread. This unit is the low-pressure (L) type, regulating up to 0.4 MPa - choose the standard type instead if your setpoint sits higher. Gauge options are the embedded square gauge (standard) or an external round gauge, in MPa, psi or bar scales; this configuration carries a round gauge in psi. Thread is G (BSPP) here, with PT as the catalogue standard and NPT available to order. A mounting bracket is included, and the GR300 is also panel-mountable.
One honest note on sizing: AirTAC publishes GR flow as curves, not as a single rated number, so we cannot quote you a flow figure here. Send us your application details and we will confirm the datasheet and check the GR300 against your required flow 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 GR regulator flow as performance curves rather than a single rated figure, so we do not quote a flow number for this unit. If you share your application - supply pressure, setpoint and the air demand of the equipment - we will confirm the datasheet and check that the GR300 size and its G1/4 port suit your required flow before you order.
The L in the code marks the low-pressure type: it regulates downstream pressure up to 0.4 MPa, which suits circuits that must run gently or precisely below normal working pressures. The standard GR300 covers the full 0.05-0.9 MPa adjustment range instead. Both share the same 1.0 MPa (145 psi) maximum inlet pressure, so the choice is about your setpoint, not the supply.
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.