The AirTAC GFR30008AJF2K AirTAC Filter Regulator 1/4 in PT is a genuine G-series filter regulator: water separation, 40 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 GFR30008AJF2K is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This 300-size unit is tapped PT1/4 (1/4 in), carries a 40 um standard filter element, and is fitted with an automatic drain, so collected condensate is expelled without manual attention. The square embedded gauge is scaled in psi, and a reverse (check) valve is fitted so downstream pressure is held if the upstream supply drops. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulator adjusts from 0.15-0.9 MPa (20-130 psi), and the operating temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl suits this size class.
This is a genuine AirTAC part. The GFR filter-regulator line spans sizes 200, 300, 400 and 600 with port options from 1/8 in to 1 in, thread options PT (standard), G and NPT, drain choices (differential-pressure, automatic or manual), a 5 um element option, gauge scale choices and optional brackets. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing figures on request.
| Model | GFR30008AJF2K AirTAC Filter Regulator 1/4 in PT |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (PT thread) |
| Filtering grade | 40 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, 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. 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. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 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 · PT1/4" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Point-of-use conditioning for a machining centre's pneumatic actuators and tool-clamp circuit: clean, dry air at a set pressure, with the check valve holding clamp pressure if the shop supply dips.
Feeding cylinders and air cylinders on a packaging conveyor: the 40 um element stops pipe-scale reaching valve spools, the automatic drain clears condensate, and the psi gauge lets operators verify set pressure at a glance.
A dedicated regulated drop for a robotic assembly cell's grippers and clamps: one body filters and regulates, the automatic drain suits an unattended cell, and the check valve protects the circuit during upstream shutdowns.
Size and port step up with required flow: this 300-size unit at PT1/4 (1/4 in) sits mid-range in the GFR line, with 200 for smaller lines and 400/600 above it. Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application before ordering. Other decodable choices: drain type (this unit is automatic; differential-pressure and manual are also available), filter grade (40 um standard, 5 um with code W for finer filtration), gauge scale (this unit reads psi; MPa and bar scales exist), thread (PT standard here, G and NPT orderable), and bracket (this configuration has none). The fitted check valve suits circuits where held downstream pressure matters during supply loss.
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 GFR flow as curves, not as a single rated figure, so we do not quote a number here. Contact us and we will confirm the datasheet curve and check the sizing against your application before you order.
The A in the code means an automatic drain: condensate collected in the polycarbonate bowl is expelled without anyone opening it, which suits unattended or hard-to-reach installations. Differential-pressure (default) and manual drains are also available in the GFR line if you prefer a different arrangement.
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.