The AirTAC GFR30010LF1WTK AirTAC Filter Regulator NPT3/8 Low-Pressure 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 GFR30010LF1WTK is a GFR-series filter regulator: one body that removes water and particulate from compressed air and holds a regulated downstream pressure. This 300-size unit is threaded NPT3/8 (3/8 in), carries the W-code 5 um filter element for finer filtration than the standard 40 um grade, and drains its PC (polycarbonate) bowl by differential pressure. It is the L-code low-pressure regulator type, a square pressure gauge on the MPa scale is fitted, a reverse/check valve is fitted, and the mounting bracket is included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, a choice of PT, G or NPT thread, manual, automatic or differential-pressure drains, 40 um or 5 um elements, and gauge or no-gauge builds. AirTAC publishes flow for this family as curves rather than a single rated figure, so ask us to confirm the flow and datasheet figures for your application before ordering.
| Model | GFR30010LF1WTK AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| 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 — square, MPa 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. |
| 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. |
| 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 spray guns and air-assisted applicators on a finishing line, where the 5 um element helps keep water and fine particulate out of the finish and the regulator holds a steady set pressure at each drop.
Supplying the pneumatic clamps, tool-change cylinders and air-blast nozzles on a machining centre, with the check valve helping hold the downstream circuit and the MPa gauge giving a clear set-point reading.
Running the diverters, pushers and sealing jaws on a packaging conveyor, where a single filter-regulator at the line drop keeps the actuators on clean, regulated air without a separate lubricator.
Size and port step up together across the 200/300/400/600 range, so choose the port that matches your line - here NPT3/8 on the 300 size. The 5 um (W) element suits points where finer filtration matters; the family standard is 40 um. This is the low-pressure (L) regulator type, so confirm the set range you need with us before ordering. Drain is differential-pressure (the family default); automatic and manual drains are orderable options. Thread is NPT on this unit, with PT as the standard and G (BSPP) also available to order. The bracket is included, and gauge scale choices of MPa, psi or bar exist across the family. 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 GFR family as curves, not as a single rated number, so we do not quote a rated flow, Cv or SCFM figure. Tell us your application and we will confirm the flow figures from the datasheet for you before you order.
L marks the low-pressure regulator type, suited to lower set pressures than the standard build - confirm the set range you need with us. K means a reverse/check valve is fitted. The W code is the 5 um filter element (40 um is the standard grade), and the F1 code is the fitted square gauge on the MPa scale.
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.