The AirTAC GFR30008AJF1WT AirTAC Filter Regulator NPT1/4 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 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 GFR30008AJF1WT is a GFR300 filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This configuration has a 1/4 in NPT port, a 5 um filter element (code W), an automatic drain that ejects collected condensate without operator attention, and an embedded square gauge reading in MPa. The regulator is the standard type with a 0.15-0.9 MPa (20-130 psi) adjustment range, and the bowl is polycarbonate (PC), as used on the 200/300/400 sizes. Maximum inlet pressure is 1.0 MPa (145 psi), the operating temperature range is -5 to 70 C (non-freezing), and this code carries no mounting bracket.
This is a genuine AirTAC part. The GFR family spans four sizes (200, 300, 400 and 600) with ports from 1/8 to 1 in, and options that include manual or differential-pressure drains, the 40 um standard element, alternative gauge scales (psi or bar), an external round gauge, G (BSPP) or NPT threads in place of the PT standard, and a mounting bracket. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR30008AJF1WT AirTAC Filter Regulator NPT1/4 |
|---|---|
| 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 | Standard 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, MPa 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. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). 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". |
| A | Drain: Automatic drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| (blank) | Standard 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. |
| (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) |
Point-of-use conditioning for a CNC cell: the 5 um element and regulation protect tool-clamp and chip-blowing circuits from water and dirt carried in the shop air line.
Feeding cylinders and grippers on a packaging conveyor: one body filters the air and holds a steady set pressure so pick-and-place motions stay consistent through the shift.
Conditioning air for lab automation benches and small test rigs, where the automatic drain keeps condensate off the instruments and the MPa gauge gives a clear set-point readout.
Choose the size by port and flow: 300 sits mid-range, and here it carries a 1/4 in NPT port; larger sizes take larger ports and more flow. Drain type is a real choice: automatic (this code) empties the bowl on its own, manual needs operator attention, and differential-pressure drains only when the pressure drop across the element is high enough. Filter grade: 40 um is the standard element; the 5 um element (W) fitted here gives finer protection. Gauge: the embedded square gauge is standard and this code reads MPa; psi or bar scales and an external round gauge are alternatives. Thread: PT is the AirTAC standard, with G (BSPP) and NPT as order options - this code is NPT. Bracket: J means no bracket is supplied. 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 the GFR300 as curves rather than a single rated figure, so we do not quote a number here. Send us your flow and pressure requirements and we will confirm the datasheet figures for this exact model before you order.
The A in this code means the bowl drains itself: collected condensate is ejected automatically, which suits unmanned cells or awkward mounting positions. The same GFR300 body is available with a manual drain or with the differential-pressure drain as the default, and with a 40 um element instead of the 5 um fitted here.
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.