The AirTAC GFR30010AJF3TK AirTAC Filter Regulator NPT3/8 Auto Drain 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 PT3/8" 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 GFR30010AJF3TK is a size-300 GFR filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has NPT3/8 ports, an automatic drain that expels collected condensate without manual attention, a 40 um standard filter element, an embedded square gauge reading in bar, and a reverse/check valve fitted. The standard regulator adjusts from 0.15-0.9 MPa (20-130 psi), and the polycarbonate bowl suits the 300 size. Maximum inlet pressure is 1.0 MPa (145 psi), with an operating temperature of -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port options from 1/8 in to 1 in, a choice of automatic, manual or differential-pressure drain, an optional 5 um (code W) element, square or round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so contact us and we will confirm the datasheet figures for your application on request.
| Model | GFR30010AJF3TK AirTAC Filter Regulator NPT3/8 Auto Drain |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (NPT 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, bar 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. |
|---|---|
| 10 | Port size PT3/8". 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. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 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" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Feeds clean, pressure-regulated air to the tool-change clamps and pneumatic actuators on a CNC machining centre, with the automatic drain keeping condensate out of the valve stack during long unattended runs.
Installed at the drop of a packaging conveyor line to condition and regulate air for carton-forming and sealing cylinders, with the 40 um element protecting the directional valves from particulate carryover.
Mounted at the drop feeding a robotic pick-and-place cell, holding a stable set pressure for gripper and clamp circuits while the reverse/check valve holds downstream pressure if the upstream supply dips.
Size this unit on the port step against your air demand: the GFR300 with 3/8 in NPT ports sits in the middle of the 200/300/400/600 range, and moving up a size buys more flow capacity at the cost of space. Choose the drain to match the installation: automatic (this unit) suits unattended duty, manual suits periodic checks, and differential-pressure drain is the catalogue default. The 40 um element is standard; specify the 5 um W grade where downstream equipment needs finer filtration. Gauge scale (MPa, psi or bar) and thread (PT standard, G or NPT to order) are selected at ordering, and a bracket is optional - this code omits it.
Because rated flow is published only as curves and not as a single number, ask us to confirm sizing against your application before ordering; we will supply the datasheet figures on request.
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 GFR300 series as curves rather than a single rated figure, so we do not quote one number here. Contact us with your air demand and we will confirm the datasheet flow figures against your application on request, before you order.
The A position selects an automatic drain, which expels collected condensate from the bowl without manual intervention - useful on lines that run unattended. The trailing K indicates a reverse/check valve is fitted, and the J earlier in the code means no mounting bracket is included.
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.