The AirTAC AirTAC GFR600-20L Filter Regulator 3/4 in PT, 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 AirTAC GFR60020LJC2K is a 600-size filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is the low-pressure regulator type (code L) with a 3/4 in PT port, the standard 40 um filter element, and a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the bowl is high enough. The fitted round gauge reads in psi, and a reverse/check valve (code K) is installed to hold downstream pressure if the upstream supply is lost. No mounting bracket is included with this code. The aluminium alloy bowl reflects the 600 size, the largest in the GFR range.
This is a genuine AirTAC part. The GFR family spans 200, 300, 400 and 600 sizes with ports from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, an optional 5 um element (code W), square or round gauges with MPa, psi or bar scales, and G or NPT thread options to order. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | AirTAC GFR600-20L Filter Regulator 3/4 in PT, Low-Pressure |
|---|---|
| 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 | 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 — round, 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. 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). |
| C | Gauge shape: Round. 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 | GFR600 · PT3/4" · 40 µm |
|---|---|
| One size down | GFR400 |
| Add lubrication | GFC600-20 (two-unit set) |
On a furniture-finishing line, this unit filters the shop air feeding atomizing spray guns and holds the guns' supply at the lower set pressures the low-pressure regulator type is built for, with the check valve keeping the guns' circuit stable if the main drops.
On a bottling conveyor, bottle clamps and capping heads run on reduced-pressure air; this 3/4 in unit filters the supply, regulates it to the circuit's low set point, and the psi gauge lets line staff verify the setting at a glance.
In a treatment plant, quarter-turn actuators on air dampers and sluice gates run at modest set pressures; this filter regulator cleans the supply, holds the reduced setting, and the differential-pressure drain sheds condensate without daily visits.
Start with the port step: this unit is 3/4 in PT, and the 600 size is the step to choose when your line is plumbed at 3/4 in and you want the largest GFR flow path. Next, the drain: differential-pressure (this code) needs no operator attention, automatic drains on a timer-free basis, and manual drains suit panels someone already walks daily. The 40 um element here is the standard grade; specify the W code if your actuators or valves need the 5 um option. The round psi gauge on this code suits US-facing panels; embedded square gauges and MPa or bar scales are the other catalogue choices. PT is the standard thread; G (BSPP) and NPT are order options. No bracket is fitted, so plan your own mounting.
One honest note on sizing: AirTAC publishes flow for this series as curves, not as a single rated number, and the exact adjustment range of the L low-pressure variant is not stated on our sheet. Tell us your line pressure, set pressure and expected air demand, and we will confirm the datasheet figures against your application 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 the GFR series as performance curves, not as a single rated figure, so we do not quote a number on the page. Send us your line pressure, set pressure and expected air demand, and we will confirm the datasheet curves and sizing for this 3/4 in unit against your application before you order.
L marks the low-pressure regulator type, a variant intended for reduced set-pressure service; the exact adjustment range of this variant is not published on our sheet, so we confirm it on request. K means a reverse/check valve is fitted, which holds downstream pressure if the upstream supply is interrupted. This code also carries a round psi gauge, the standard 40 um element, a differential-pressure drain, and no mounting bracket.
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.