The AirTAC GFR30010LF2WK AirTAC Low-Pressure Filter Regulator PT3/8 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 GFR30010LF2WK is a GFR-series filter regulator: it removes water and particulate from compressed air and holds a steady downstream pressure in one body. This 300-size unit is built with a 3/8 in PT port, a 5 um filter element (the finer W grade, against the 40 um standard), a differential-pressure drain, and the low-pressure regulator type. It comes with an embedded square gauge reading in psi, a reverse/check valve fitted, and a mounting bracket included; the polycarbonate bowl lets you see collected condensate at a glance.
This is a genuine AirTAC part. The GFR family spans 200, 300, 400 and 600 sizes with ports from 1/8 to 1 in, drain choices (differential-pressure, automatic or manual), 40 um or 5 um filtration, 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 is published as curves rather than a single rating, so ask us to confirm the figures for your application; the datasheet is available on request.
| Model | GFR30010LF2WK AirTAC Low-Pressure Filter Regulator PT3/8 |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (PT 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 — square, psi scale |
| Reflux valve | Fitted (reverse flow permitted) |
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. |
| (blank) | Mounting 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. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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 clean, regulated air to directional control valve banks on packaging and assembly lines, where the 5 um element protects spool surfaces and the check valve holds downstream pressure if the supply dips.
Conditioning the compressed air that serves tool clamps, tool-change cylinders and chip-blow nozzles on machining centres, with the low-pressure regulator type suited to circuits that run below standard line pressure.
Supplying filtered and regulated air to stopper cylinders, pushers and diverters on assembly conveyors, where the PT3/8 port matches typical manifold piping and the psi gauge keeps setpoints easy to read on the US floor.
The real choices in this family are the size and port step, the drain, the filter grade, the gauge and the thread. Size 300 with a PT3/8 port suits circuits plumbed at 3/8 in; step up to 400 or 600 where larger flow is needed, or down to 200 for compact lines - match the port to your piping and let us confirm the flow curve against your demand. The drain here is differential-pressure (the default); automatic (A) and manual (M) versions exist if you prefer. The 5 um W element is the finer option over the 40 um standard. The square gauge reads psi; MPa and bar scales, and an external round gauge, are alternatives. PT is the standard thread, with G (BSPP) and NPT as order options, and the bracket is included (code J deletes it). This unit is the low-pressure type (L) with a reverse/check valve (K) fitted.
Because flow is published as curves, not a single rating, 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR300 as curves rather than a single rated figure, so we do not quote a number here. Send us your air demand and line details and we will confirm the flow from the datasheet before you order.
K means a reverse (check) valve is fitted, which holds downstream pressure if the upstream supply drops. Other decodable choices on this unit: 5 um filtration (W), a square gauge reading psi (F2), the low-pressure regulator type (L), a PT3/8 port, a differential-pressure drain, and a mounting bracket included.
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.