The AirTAC GFR600-20ALF1WTK AirTAC Filter Regulator NPT3/4 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 GFR600-20ALF1WTK is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure in one compact body. This 600-size unit is threaded 3/4 in NPT, carries a 5 um filter element (code W), and drains condensate automatically without operator attention. It is the low-pressure (L) regulator type, the aluminium alloy bowl suits higher-capacity service, an embedded square gauge scaled in MPa is fitted, a reverse/check valve is built in, and a mounting bracket is included. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and operating temperature is -5 to 70 C (non-freezing).
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 include manual or differential-pressure drains, the 40 um standard element, G (BSPP) or NPT threads, external round gauges, and psi or bar gauge scales. Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | GFR600-20ALF1WTK AirTAC Filter Regulator NPT3/4 |
|---|---|
| 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, 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. |
| (blank) | Mounting bracket included. |
| (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. |
| 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. |
| 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" · 5 µm |
|---|---|
| One size down | GFR400 |
| Add lubrication | GFC600-20 (two-unit set) |
Feeding seal jaws and clamp cylinders on a carton-wrapping line, where a low setpoint must hold steady and the automatic drain keeps condensate out of the valves.
Supplying pneumatic clamps and air chucks on a CNC machining cell with 3/4 in porting, with the 5 um element protecting the clamping valves from particulate.
Powering diverter gates and stop cylinders on a bottling conveyor, where the reverse/check valve holds the circuit against backflow between cycles.
Choose GFR600 when your line needs 3/4 in porting and the capacity of the 600 size; the 200, 300 and 400 sizes cover lighter duty at smaller ports. The automatic drain on this unit empties the bowl unattended - manual or differential-pressure drains are the alternatives when you want operator control or energy-saving purging. The 5 um element (code W) suits finer downstream needs; 40 um is the standard grade. This is the low-pressure (L) type, and the exact regulation range for that version is not published, so confirm it against your setpoint before ordering. Gauge scale here is MPa; psi and bar scales and an external round gauge are available options. NPT is ordered as the T variant - PT is the standard thread and G (BSPP) is also offered. Flow is published as curves, not a single rating, so ask us to confirm sizing against your application before ordering.
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.
Flow for the GFR600 is published as curves, not as a single rated figure, so we do not quote a number here. Tell us your line pressure, setpoint and downstream demand and we will confirm sizing from the AirTAC datasheet on request.
The L marks the low-pressure regulator type; the exact regulation range for the low-pressure version is not published, so confirm it against your setpoint with us before ordering. The A is the automatic drain, which empties the bowl without operator attention - manual (M) and differential-pressure (blank) drains are the other options.
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.