The AirTAC GFR600-20ALF2K AirTAC Filter Regulator 3/4 in PT 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 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 GFR600-20ALF2K is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This size-600 unit is fitted with a 3/4 in PT port, a 40 um standard filter element, and an automatic drain that expels collected condensate without manual attention. It is the low-pressure regulator type, and the embedded square gauge reads in psi. A reverse/check valve is fitted, and the mounting bracket is included. The aluminium alloy bowl suits the 600 frame, and the maximum working (inlet) pressure is 1.0 MPa (145 psi) with an operating temperature of -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and options include manual or differential-pressure drains, a 5 um (code W) element, alternative gauge scales, G or NPT threads, and bracket variations. Flow figures are published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR600-20ALF2K AirTAC Filter Regulator 3/4 in PT |
|---|---|
| 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 | Automatic drain |
| Bowl material | Aluminium alloy |
| Pressure gauge | Fitted — square, 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". |
| 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. |
| 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 workshop pneumatic press fed from a 3/4 in main, this unit filters condensed water and scale from the supply and holds a steady low regulated pressure to the press cylinder, with the automatic drain keeping the aluminium bowl clear during long production runs.
At a packaging line air drop, the 40 um element stops pipe-scale reaching directional valves and cylinders, the regulator sets a stable low-pressure supply for the sealing station, and the psi gauge lets maintenance verify setpoints at a glance.
Installed as the filter-regulator stage of an air preparation train on automated machinery, it protects downstream control valves from water and particulate while the reverse/check valve holds the circuit against supply reversal, with the included bracket fixing the unit to the machine panel.
Choose the size and port step against the air demand of the circuit: this is the 600 size with a 3/4 in PT port, the largest frame in the GFR range, for lines plumbed at 3/4 in. Drain type is a real choice: automatic drain (this unit) empties the bowl on its own, while manual and differential-pressure drains suit attended or duty-cycle-driven installations. The 40 um element is the standard grade; the 5 um W grade is available where finer particulate removal is needed. Gauge scale (MPa, psi or bar) and thread (PT standard, with G and NPT as order options) are specified at ordering, as is the bracket.
Because flow is published as curves and not as a single rated figure, we do not quote a flow number here. Send us your application details and we will confirm sizing against the datasheet curves 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 rather than a single rated figure, so we do not quote a flow number. Tell us your application and we will confirm the relevant datasheet flow curve and sizing on request before you order.
The A in the code means the bowl drains itself automatically, so collected condensate is expelled without anyone opening the drain - useful on lines that run unattended. Manual and differential-pressure drain versions are available in the GFR range if your installation prefers them.
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.