The AirTAC Airtac GFR Filter Regulators GFR30010LJF1WTK 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 GFR30010LJF1WTK 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 built for low-pressure duty, carries a 5 um filter element (code W) for finer filtration than the standard 40 um grade, and uses a differential-pressure drain that bleeds condensate automatically whenever the pressure differential across the element is high enough. It is fitted with an embedded square gauge scaled in MPa, a reverse/check valve to hold downstream pressure, and ships without a mounting bracket (code J). The port is 3/8 in NPT thread, and the polycarbonate bowl is rated for the family's -5 to 70 C (non-freezing) operating range with a maximum inlet pressure of 1.0 MPa (145 psi).
This is a genuine AirTAC part from the GFR300 series, one of four sizes (200, 300, 400, 600) in the G-series line with port options from 1/8 in to 1 in, a choice of PT, G or NPT thread, manual, automatic or differential-pressure drains, 40 um or 5 um filtration, and gauge or no-gauge variants. Because AirTAC publishes flow only as curves rather than a single rated figure, we confirm flow and other datasheet figures for your application on request before you order.
| Model | Airtac GFR Filter Regulators GFR30010LJF1WTK |
|---|---|
| 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. |
| J | Supplied without bracket. |
| (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) |
On a carton-forming or wrapping machine, this unit filters the shop air to 5 um before it reaches the directional valves and small actuators, and holds the low working pressure those actuators are designed for. The check valve keeps the circuit pressurised during brief supply dips so a half-finished cycle does not collapse.
Fill-level sensors, air-purge probes and pneumatic signal devices on a bottling line need clean, steady, low-pressure air. The 5 um element protects the fine orifices in these devices from water and particulate, while the MPa gauge gives operators a visible set point at the panel.
Pneumatic hold-downs and pushers along a woodworking conveyor run at modest pressure and are unforgiving of dirty air. This filter regulator sits at the conveyor's air drop, delivering filtered low-pressure air to the clamps, with the differential-pressure drain handling condensate without a daily manual blow-down.
Choose the 300 size with its 3/8 in port when your line sits in the middle of the G-series flow band; step up to 400 or 600 for larger demand, or down to 200 for compact points of use. This unit is the low-pressure (L) type, so if your set point is modest rather than full line pressure it is the right variant - ask us to confirm the exact adjustment band for this configuration, since the low-pressure range is not published as a single figure. The 5 um element (code W) suits downstream valves, cylinders and instruments that need finer air than the standard 40 um grade; the differential-pressure drain suits duty where a manual drain routine is impractical but a fully automatic float drain is not required. The fitted square MPa gauge reads the regulated output directly, and the reverse/check valve holds downstream pressure if upstream supply is lost. NPT thread is specified here; PT is the catalogue standard and G (BSPP) is also orderable, so match the thread to your piping. No bracket is included with this code, so plan your panel or manifold fixing accordingly. Flow is published as curves, not a single rating - send us your flow and pressure requirements 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR series as performance curves rather than a single rated figure, so we do not quote a l/min or SCFM number. Send us your required flow and upstream/downstream pressures and we will confirm the sizing from the datasheet on request before you order.
W specifies the 5 um filter element instead of the standard 40 um grade, giving finer removal of water and particulate for sensitive valves and instruments. The L code marks the low-pressure regulator type, intended for reduced set points rather than full line pressure; its exact adjustment range is not published as a single figure, so ask us to confirm it against the datasheet for your set point.
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.