The AirTAC GFR600-20ALJF1TK AirTAC Filter Regulator NPT3/4 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 GFR600 series is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This GFR600-20ALJF1TK is the size-600 unit with a 3/4 in NPT port, automatic drain, the standard 40 um filter element and the low-pressure regulator type. It carries an embedded square MPa gauge and a reverse/check valve, and is supplied without a mounting bracket. The bowl on this size is aluminium alloy.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of automatic, manual or differential-pressure drain, a 5 um (code W) filter element option, gauge scale choices and G/NPT thread options. Flow figures are published as curves rather than a single rating, so ask us to confirm sizing or any datasheet figure for your application before ordering.
| Model | GFR600-20ALJF1TK AirTAC Filter Regulator NPT3/4 |
|---|---|
| Series | GFR600 filter regulator |
| Port size | PT3/4" (NPT thread) |
| Filtering grade | 40 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 | 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. 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.
| 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)). |
| 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. |
| 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. |
| 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 | GFR600 · PT3/4" · 40 µm |
|---|---|
| One size down | GFR400 |
| Add lubrication | GFC600-20 (two-unit set) |
Point-of-use conditioning and pressure control for pneumatic clamp and fixture circuits on machining lines that run actuators at reduced pressure, with condensate removed automatically at the drop.
Filtered, regulated air for wrapper and case-sealer actuator circuits, where the automatic drain keeps condensate out of valves and cylinders between shift checks.
Supply conditioning for stopper, lift and divert cylinders on conveyor systems, where the reverse/check valve holds the downstream circuit and the gauge gives a local pressure readout.
Start with the port step: size 600 with a 3/4 in NPT port is the largest frame in the GFR range, so step up from a smaller size when the line diameter and expected air demand call for it. Choose the drain to suit attendance: automatic drain (this unit) handles condensate without manual intervention, manual drain suits periodically attended installations, and differential-pressure drain is the catalogue default. Filter grade is 40 um standard; specify the W code for the 5 um element where downstream equipment needs finer filtration. This is the low-pressure regulator type, so confirm the control range suits your circuit. Gauge scale options are MPa, psi or bar, and thread can be ordered as PT (standard), G (BSPP) or NPT. A bracket is optional on this family; this code is the no-bracket variant.
Because flow is published only as curves and not as a single rated figure, send us your application details and we will confirm sizing against the datasheet before you order.
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.
AirTAC publishes flow for this series as curves rather than a single rated figure, so we do not quote a rated flow number. Send us your line size and air demand and we will confirm the sizing against the datasheet on request before you order.
This code carries the L (low-pressure) regulator type, and the exact adjustment range for that variant is not published in the data we hold. If your circuit runs at reduced pressure, ask us to confirm the range on request; the standard-type GFR range and its published ranges are also available.
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.