The AirTAC GFR600-20LJC2GK AirTAC Filter Regulator G3/4 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 GFR600-20LJC2GK 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 G3/4 port with G (BSPP) thread - PT is the catalogue standard and G/NPT are order options - with the standard 40 um filter element and a differential-pressure drain that bleeds condensate as pressure drops across the element. It is the low-pressure type, fitted with an external round gauge scaled in psi and a reverse/check valve, and is supplied without a mounting bracket. The size-600 bowl is aluminium alloy.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and options including manual or automatic drains, a 5 um (W) element, gauge choice and scale, a reverse/check valve, and bracket variants. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet and sizing figures for your application before ordering.
| Model | GFR600-20LJC2GK AirTAC Filter Regulator G3/4 Low-Pressure |
|---|---|
| Series | GFR600 filter regulator |
| Port size | PT3/4" (G (BSPP) 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. |
| G | G (BSPP) 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) |
Filter and regulate the air feeding spray guns in a paint booth, where clean, steadily regulated low-pressure air keeps atomisation consistent across a shift.
Condition the supply to cylinders and actuators on a packaging line: the 40 um element strips water and debris before the regulator sets the working pressure for the machine's valve manifold.
Feed air knives that blow rinse water off bottles, with the filter protecting the nozzles and the low-pressure regulator holding a gentle, even blow-off pressure.
Start with the port step: size 600 at G3/4 suits lines plumbed at 3/4 inch, and the next size up or down moves you along the flow curves - we can confirm which size fits your demand. Choose the drain to match maintenance access: differential-pressure (this unit) needs no timer, automatic (A) discharges on its own, and manual (M) is emptied by hand. Element grade is 40 um standard or 5 um with code W if finer filtration is needed. This unit is the low-pressure type and carries a round psi gauge; square gauges and MPa or bar scales are the other catalogue choices. Thread is G here, with PT standard and NPT orderable, and code J means no bracket is included.
Because flow is published as curves rather than a single rated figure, send us your application details and we will confirm sizing from 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 the GFR series as curves, not as a single rated number, so we do not quote a figure that could mislead your sizing. Send us your line pressure and air demand and we will confirm the flow from the datasheet for this exact G3/4 configuration before you order.
L marks the low-pressure regulator type, intended where the working pressure you set sits below the standard type's range; the exact range for this low-pressure variant is not published, so we confirm it on request. K means a reverse/check valve is fitted, holding downstream pressure if the supply is lost. The C2 code adds an external round gauge scaled in psi.
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.