The AirTAC GFR600-20LJF1T AirTAC Filter Regulator NPT3/4 Low-Pressure 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 differential-pressure 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 GFR600-20LJF1T is an AirTAC GFR600 filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This size 600 unit carries a 3/4 in NPT port, is the low-pressure regulator type, and comes with the standard 40 um filter element and a differential-pressure drain that bleeds collected condensate automatically as flow passes through. The aluminium alloy bowl suits this larger frame, and the embedded square gauge, scaled in MPa, lets you read outlet pressure at a glance. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). No mounting bracket is fitted on this variant.
This is a genuine AirTAC part. The GFR series spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and can be ordered with manual or automatic drains, a 5 um element (code W), psi or bar gauge scales, an external round gauge, G or NPT threads, and a bracket. Flow is published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR600-20LJF1T AirTAC Filter Regulator NPT3/4 Low-Pressure |
|---|---|
| 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 | Differential-pressure drain |
| Bowl material | Aluminium alloy |
| 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. 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". |
| (blank) | Drain: Differential-pressure 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. |
| (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 | GFR600 · PT3/4" · 40 µm |
|---|---|
| One size down | GFR400 |
| Add lubrication | GFC600-20 (two-unit set) |
Fixture clamps and swing cylinders that hold parts at reduced line pressure get filtered air and a stable, low setpoint from one body, with the MPa gauge showing the clamp setting at the cell.
Feeding carton sealers, case erectors and wrapping heads on a packaging conveyor line, where the differential-pressure drain keeps condensate off the valves during continuous running.
Panel builders use the size 600 frame at the 3/4 in header take-off to condition and step down supply air to I/P transducers and positioners, with the embedded square gauge for local readout.
Size and port set the air capacity of the unit: this is the size 600 frame with a 3/4 in NPT port, the largest step in the GFR range, chosen when the line demands the bigger porting. Because flow is published only as curves and not as a single rated figure, ask us to confirm sizing against your application before ordering. The drain here is the differential-pressure type, which discharges condensate as flow passes through; automatic (code A) and manual (code M) drains are order options if your duty cycle suits them better. The standard element is 40 um; specify W for the 5 um grade where downstream equipment needs finer filtration. The fitted square gauge reads in MPa, and psi or bar scales, or an external round gauge, can be ordered. Thread is NPT on this unit; PT is the standard and G (BSPP) is also a catalogue option. This variant carries no bracket, and the J code drops the bracket on other sizes too.
Quick checklist
The aluminium-alloy bowl on the GFR600 suits harsher environments than a PC bowl. 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 GFR series as curves, not as a single rated number, so we do not quote a figure that could mislead your sizing. Tell us your line pressure, downstream demand and allowable pressure drop, and we will confirm the datasheet curve figures for this exact unit on request before you order.
The L in the code marks the low-pressure regulator type, intended for applications set well below standard line pressure; the exact adjustment range for this variant is not published in the sheet we work from, so ask us to confirm it on request. The drain is the differential-pressure type: condensate collected in the aluminium bowl is discharged automatically when the pressure differential across the unit is sufficient, so no manual draining is needed under normal flowing duty.
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.