The AirTAC GFR30010LJC1WT AirTAC Low-Pressure Filter Regulator 3/8 NPT is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT3/8" ports, a differential-pressure drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR300 series combines water and particulate filtration with pressure regulation in a single body. This unit is the 300 size with 3/8 in NPT ports, the 5 um filter element (the finer of the two published grades), a differential-pressure drain that discharges condensate automatically during operation, an external round pressure gauge reading in MPa, and the low-pressure regulator type for circuits that need gentle downstream settings. The polycarbonate bowl lets you see the condensate level at a glance, and no mounting bracket is fitted.
This is a genuine AirTAC part, covered by the published G-series datasheet. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um elements, square or round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow figures are published as curves rather than a single rating, so ask us to confirm sizing against your application; we can supply the datasheet on request.
| Model | GFR30010LJC1WT AirTAC Low-Pressure Filter Regulator 3/8 NPT |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Low-pressure type |
| Adjusting mechanism | Balanced type |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Drain type | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, MPa scale |
| Reflux valve | Not fitted |
Specifications follow the official AirTAC G-series air-preparation data. The regulating band is set by the drain type: automatic and differential-pressure drains regulate 0.15 - 0.9 MPa, a manual drain regulates 0.05 - 0.9 MPa. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. Air must not freeze in the unit. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GFR300 | G-series filter 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) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| L | Low-pressure type. 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. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| (blank) | No reverse-flow valve (the default). |
Field order is size, port, drain, type, bracket, gauge, shape, scale, grade, thread, reflux — a blank position takes the default. Example: GFR300-08 is a 300 body, PT1/4", differential drain, standard type, bracket included, gauge fitted, 40 µm, PT thread, no 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. The GFR600 uses an aluminium-alloy bowl; the 200, 300 and 400 bodies use PC.
| This model | GFR300 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Feeding filtered, gently regulated air to the low-pressure circuit of a carton-sealing or wrapping machine, where the 5 um element protects downstream valves and the round MPa gauge gives operators a clear setting reference.
Supplying clean, regulated pilot air to diaphragm-control valves on a water-treatment or dosing skid, where the differential-pressure drain keeps condensate out of the pilot line without manual attention.
Regulating filtered air at an electronics assembly bench where low-pressure settings are needed for delicate work and the 5 um element helps keep moisture and fine particles away from the product.
Start with the port step: this unit is the 300 size with 3/8 in NPT ports; the 400 and 600 sizes step up in port and flow capacity and the 200 size steps down. The 5 um element (code W) suits air feeding sensitive components, while the standard 40 um element is the choice for general shop air. Drain options are differential-pressure (fitted here), automatic (code A) or manual (code M). Gauges can be the embedded square type or an external round gauge like this one, with MPa, psi or bar scales. Threads come as PT (standard), G (BSPP) or NPT, and a mounting bracket is optional (code J deletes it). Because flow is published as curves rather than a single rated figure, send us your application details and we will confirm sizing against the datasheet before you order.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR300 series as curves rather than a single rated figure, so there is no one number we can quote honestly. Send us your application - line pressure, downstream equipment and duty - and we will confirm the flow from the datasheet on request before you order.
L marks the low-pressure regulator type. This unit still filters and regulates in one body, but its low-pressure adjustment range is not published as a single figure in the catalogue, so we confirm the exact setting limits from the datasheet on request. If you need the standard published adjustment range instead, ask about the GFR300 variants without the L code.
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.