The AirTAC GFR30010ALJF2T AirTAC Filter Regulator NPT3/8 Low-Pressure is a genuine G-series filter regulator: water separation, 40 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT3/8" ports, a automatic 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 GFR30010ALJF2T is a 300-size filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is the low-pressure type with an automatic drain that ejects collected condensate without manual attention, a 40 um standard filter element, a 3/8 in NPT port, and an embedded square gauge scaled in psi. No mounting bracket is fitted.
This is a genuine AirTAC part from the GFR series, which spans 200, 300, 400 and 600 sizes with port options from 1/8 in to 1 in, manual or automatic drain, a 5 um element option, and gauge choices. Flow is published as curves rather than a single rating, so we confirm the datasheet figures for your application on request.
| Model | GFR30010ALJF2T AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 40 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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, psi 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". |
| A | Drain: Automatic 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). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 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" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Feeds a spray-gun manifold where coating equipment calls for a gentle regulated supply; the filter strips water and pipe scale that would otherwise blemish the finish, and the automatic drain keeps the bowl clear through a shift.
Sits ahead of clamping cylinders on a CNC fixture line, filtering the shop air and holding the low holding pressure the clamps are set to, with the psi gauge giving the operator a direct reading at the cell.
Conditions the air feeding laboratory handling and dosing stations that run at reduced pressure; the low-pressure type matches the modest setpoints and the automatic drain suits equipment left running unattended.
Start with size and port: the 300 size with its 3/8 in NPT port suits mid-range supply lines, and larger sizes carry more flow. The 40 um element is the standard grade; choose the W option for 5 um where finer filtration is needed. This unit is the low-pressure (L) type, so confirm its regulation range against your setpoint before ordering; the exact published range is not stated here and we confirm it on request. The automatic drain suits unattended installations, while manual and differential-pressure drains are alternatives in the family. The square gauge is scaled in psi; MPa and bar scales and an external round gauge are options. Thread is NPT here; PT is the standard and G (BSPP) is also an order option. Flow is published as curves, not a single rating, so ask us to confirm sizing against your application before ordering.
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 this series as curves, not as a single rated figure, so no rated flow number is stated here. Send us your line pressure, setpoint and downstream demand and we will confirm the sizing from the datasheet on request.
The L in the code marks the low-pressure regulator type, intended for circuits regulated well below standard line pressure; its exact regulation range is not published in our sheet, so we confirm it on request. The A marks an automatic drain, which ejects condensate from the PC bowl on its own instead of waiting for a manual drain, and the F2 marks the embedded square gauge scaled in psi.
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.