The AirTAC GFR30008LJF2WT AirTAC Filter Regulator 1/4 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 PT1/4" 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 GFR30008LJF2WT is a GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is built on the GFR300 size with a 1/4 in NPT port, a 5 um filter element (code W, against the 40 um standard), a differential-pressure drain, and the low-pressure regulator type. A square pressure gauge with a psi scale is fitted, and the unit is ordered without a mounting bracket.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options for drain type, filter grade, gauge style and scale, thread (PT standard; G and NPT to order), bracket and reverse/check valve. 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 datasheet figures for your application.
| Model | GFR30008LJF2WT AirTAC Filter Regulator 1/4 NPT |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (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, 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. |
|---|---|
| 08 | Port size PT1/4". 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. |
| 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. |
| 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 · PT1/4" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Bench and fixture clamps that run on low-pressure air cylinders get filtered, regulated supply from this unit, with the 5 um element protecting the clamp valves from particulate and condensed water.
Small form-fill-seal and cartoning machines with low-pressure pneumatic actuators take their air through this filter regulator, keeping the machine's valve island supplied with clean air at a stable reduced setting.
Low-pressure pneumatic controls and indicators on a pilot line or test rig are fed from this unit, where the 5 um grade and fitted psi gauge suit circuits that run well below standard shop-air settings.
Pick the GFR300 size when your demand sits at the 1/4 in port step; sizes 200 to 600 step up in port and flow capacity, so match the port to your supply line and verify the flow curve before ordering. Drain options are differential-pressure (this unit, standard), automatic (A) or manual (M). Filter grade is 5 um here (code W) versus the 40 um standard - choose 5 um where downstream valves or instruments need finer air. The square gauge is fitted with a psi scale; MPa and bar scales, and an external round gauge, are alternatives. Thread is NPT on this unit; PT is the standard and G (BSPP) is also an order option. The bracket is excluded (code J) but can be ordered. Because flow is published as curves, not a single rating, ask us to confirm sizing against your application.
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 GFR series as curves, not a single rated figure, so we do not quote a number here. Send us your line pressure, port size and air demand, and we will confirm the flow from the datasheet for this exact configuration before you order.
The L code selects the low-pressure regulator type, intended for circuits that run well below standard pressure settings. The exact adjustment range for the low-pressure type is not published in the catalogue, so ask us to confirm it against your setpoint before ordering.
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.