The AirTAC GR30008LJF2GK AirTAC Low-Pressure Air Regulator G1/4 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 GR30008LJF2GK is an AirTAC GR-series pressure regulator for compressed air: it reduces and holds a steady downstream pressure, and nothing else - there is no filter and no bowl in this family. This is the low-pressure type (code L), so its adjustment range goes up to 0.4 MPa, suited to circuits that must never see full-line pressure. It is built in size 300 with a G1/4 (1/4 in) BSPP port, thread G, and comes with an embedded square gauge reading in psi. A reverse/check valve (code K) is fitted, so downstream pressure is held if the upstream supply drops. No mounting bracket is included (code J); the GR body is also panel-mountable.
This is a genuine AirTAC part from the GR series, which spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, standard or low-pressure types, and gauge, thread and bracket options. Flow is published in the catalogue as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GR30008LJF2GK AirTAC Low-Pressure Air Regulator G1/4 |
|---|---|
| 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 | Supplied without bracket |
| 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 | 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. |
|---|---|
| 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. |
| J | Supplied without bracket. |
| (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. |
| 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 · 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 |
A carton-sealing or bagging line where pneumatic clamps must press gently so product and film are not crushed. The low-pressure type holds the clamp circuit at a reduced setting, and the check valve keeps the clamps gripped if the main air supply dips.
A benchtop mill or assembly fixture using light pneumatic hold-downs on thin or soft parts. The regulator sets a low, repeatable downstream pressure, the square psi gauge gives a direct reading in the shop's units, and panel mounting tidies the control cabinet.
A conveyor-mounted blow-off or drying station where product surfaces must be cleared without blasting. The regulator trims the air knife circuit to a gentle setting, and the G1/4 port suits the compact manifold plumbing typical of these stations.
Pick the size by the flow your line needs: GR comes in sizes 200, 300, 400 and 600, each stepping up in port and capacity - this unit is size 300 with a G1/4 port. Choose standard or low-pressure (L) regulation: this one is the low-pressure type, adjusting up to 0.4 MPa; the standard type adjusts up to 0.9 MPa. Decide whether you want the reverse/check valve (K) to hold downstream pressure, which gauge scale you need (MPa, psi or bar - this unit carries a square psi gauge), and the thread: PT is the standard, with G (BSPP) and NPT available as order options. Brackets are optional on GR, which is also panel-mountable; this configuration ships without a bracket (J).
One honest note before you order: catalogue flow is published as curves, not a single rated number, so send us your application's flow and pressure requirements and we will confirm the right size from the datasheet before you commit.
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 regulator flow as curves in the catalogue, not as a single rated figure, so we will not quote you a number that is not in the datasheet. Send us your application's flow and pressure requirements and we will confirm the sizing from the datasheet curves on request.
The L in the code marks the low-pressure type: its adjustment range goes up to 0.4 MPa instead of the standard type's higher range. It is for circuits that must be held at reduced pressure. Maximum inlet pressure is still 1.0 MPa (145 psi), and the operating temperature range for GR is -20 to 70 C.
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.