
The AirTAC AirTAC GFR600-20 Filter Regulator (GFR60020AJF1K) 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 PT3/4" 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 GFR series is a filter regulator in one body: water and particulate are removed through the drain bowl and element, and downstream pressure is set by the built-in regulator. This GFR60020AJF1K is the 600 size on a PT3/4 port (PT is the standard thread; G and NPT are catalogue options) and adds the K option, a reverse (check) valve fitted in the unit, so downstream pressure is held if the supply side drops. It carries an automatic drain, the standard 40 um element, and an embedded square gauge in MPa. Medium is compressed air only; maximum working pressure is 1.0 MPa (145 psi) and the automatic-drain adjustment range is 0.15-0.9 MPa (20-130 psi). Operating temperature is -5 to 70 C, non-freezing.
This is a genuine AirTAC part from a distributor. The G series spans sizes 200-600 with manual or differential-pressure drain options, a 5 um fine element, round or square gauges in MPa/psi/bar, G or NPT threads and a bracket option. Flow is published as curves rather than a single rating, so we confirm flow and datasheet figures on request.
| Model | AirTAC GFR600-20 Filter Regulator (GFR60020AJF1K) |
|---|---|
| Series | GFR600 filter regulator |
| Port size | PT3/4" (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 | Aluminium alloy |
| 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. 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.
| GFR600 | G-series filter regulator, 600 body — sets the port range. |
|---|---|
| 20 | Port size PT3/4". This body offers 20 = PT3/4", 25 = PT1". |
| 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. |
| (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 | GFR600 · PT3/4" · 40 µm |
|---|---|
| One size down | GFR400 |
| Add lubrication | GFC600-20 (two-unit set) |
Supply a pneumatic clamping circuit on an assembly press where an upstream air loss must not dump the clamp line: the K reverse valve holds downstream pressure while the filter regulator maintains the set MPa supply during normal operation.
Condition the 3/4-in air feed to dock levellers and trailer restraint systems: filtered and regulated air feeds the actuation circuits, the automatic drain copes with condensate in a damp yard environment, and the check valve guards against backfeed.
Fit into a rebuilt machine tool's 3/4-in air drop where a single body must filter, regulate and hold pressure: the square MPa gauge matches the original panel readout, and the automatic drain removes collected water unattended.
Choose this code when your 3/4-in line needs the 600 size and the K reverse valve: the check function holds downstream pressure against supply-side loss, useful on circuits that must not vent back. Drain, grade and gauge decode as automatic drain, 40 um standard element and embedded square MPa gauge; manual drain, 5 um filtration and other gauge scales are orderable in the same series. This unit ends in J (no bracket) with the PT thread; G (BSPP) and NPT are catalogue alternatives.
Because flow is given only as datasheet curves and not a single rated value, ask us to confirm sizing against your application before ordering.
Quick checklist
The aluminium-alloy bowl on the GFR600 suits harsher environments than a PC bowl. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
Yes, on request. AirTAC publishes flow for the G series as performance curves rather than one rated figure, so we do not quote a number here. Send us your demand and delivery pressure and we will confirm the flow and datasheet figures for this 3/4-in unit before you order.
K indicates a reverse (check) valve fitted in the unit, so air cannot flow back from the downstream side to the supply side. It is a build option on the GFR series; the same unit without it carries the identical code minus the K, and is the right choice where backfeed is not a concern.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business 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.