The AirTAC GFR600-20 AirTAC Filter Regulator NPT3/4 5 um Low-Pressure is a genuine G-series filter regulator: water separation, 5 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 GFR600-20 is a filter regulator: one body that removes water and particulate from compressed air and then regulates downstream pressure. This 600-size unit is fitted with a 3/4 in NPT port, the fine 5 um filter element (code W), an automatic drain that expels collected condensate without manual attention, and an embedded square gauge reading in bar. It is the low-pressure type, intended for circuits that run below standard line pressures. The aluminium alloy bowl on this size 600 unit gives added robustness where a polycarbonate bowl would not be preferred.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, a choice of drain types, 40 um or 5 um filtration, gauge scales in MPa, psi or bar, and PT, G or NPT threads. Flow for this series is published as curves rather than a single rating, so ask us to confirm the figures against your application before ordering.
| Model | GFR600-20 AirTAC Filter Regulator NPT3/4 5 um Low-Pressure |
|---|---|
| Series | GFR600 filter regulator |
| Port size | PT3/4" (NPT thread) |
| Filtering grade | 5 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, bar 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". |
| 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. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 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" · 5 µm |
|---|---|
| One size down | GFR400 |
| Add lubrication | GFC600-20 (two-unit set) |
Supplies filtered, regulated air to the clamp and cylinder bank on an automotive weld fixture, with the 5 um element protecting directional valves and the automatic drain clearing condensate between shifts.
Feeds the lift, pusher and divert cylinders on a carton packaging conveyor where the circuit runs below standard pressure; the low-pressure regulator type and bar gauge keep setpoints easy to verify on the line.
Conditions the air serving jet nozzles and guide-roller actuators on a textile finishing line, where fine 5 um filtration prevents fouling and the automatic drain handles moisture without operator rounds.
Size 600 with a 3/4 in port sits at the top of the GFR range, so start by matching the port and the flow curve to your line consumption rather than to a single rated figure. Choose the 5 um element (this unit) when downstream valves, cylinders or instruments need finer protection than the standard 40 um grade. The automatic drain suits unattended or hard-to-reach installations; manual and differential-pressure drains are the alternatives if you prefer operator control. The square gauge reads in bar; MPa and psi scales are also available. This is the low-pressure type, so confirm its regulation range against your circuit before ordering. NPT is the thread on this code; PT and G are catalogue options. A mounting bracket is included.
Because flow is published as curves and not as a single rating, 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. 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 figure, so we do not quote a number here. Send us your line pressure, downstream consumption and acceptable pressure drop, and we will confirm the sizing from the datasheet before you order.
The W code in GFR600-20ALF3WT selects the 5 um filter element instead of the standard 40 um grade, giving finer protection for sensitive valves and instruments. The A code selects the automatic drain, which ejects collected condensate on its own - useful where the unit is mounted out of reach. A manual or differential-pressure drain is available on other codes in the same size.
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.