The AirTAC AirTAC GFR600-20 Filter Regulator 3/4 in NPT, 5 um Filter 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 manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The GFR600-20 is an AirTAC filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This 600-size unit is threaded 3/4 in NPT, carries a 5 um filter element (code W), has a manual drain on the aluminium alloy bowl, an embedded square gauge scaled in MPa, and a built-in reverse (check) valve. A mounting bracket is included.
This is a genuine AirTAC part. The GFR series runs from size 200 to 600 with ports from 1/8 to 1 in, filter grades of 40 um standard or 5 um (W), manual, automatic or differential-pressure drains, and gauge scales in MPa, psi or bar. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | AirTAC GFR600-20 Filter Regulator 3/4 in NPT, 5 um Filter |
|---|---|
| Series | GFR600 filter regulator |
| Port size | PT3/4" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 130 psi) |
| Pressure type | Standard 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 | Manual 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. Standard type, regulating 0.05 - 0.9 MPa (7 - 130 psi). 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". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| (blank) | Standard 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) |
Filtered, regulated air to a CNC machining cell's tool changer and clamping actuators on a 3/4 in main drop. The 5 um element keeps directional valves clean, and the check valve holds the regulated setting if shop supply dips.
Pressure control for case-erector and carton-sealing cylinders fed from a packaging line manifold. Operators bleed the manual drain at shift start, and the MPa gauge gives a clear setpoint for consistent cylinder speed.
Supplying pilot air to large automated process valves in a water-treatment plant. The 5 um grade protects pilot solenoids from particulate and rust scale, while the regulator holds a steady pilot pressure for repeatable valve stroking.
Size 600 with a 3/4 in NPT port is the step for lines where higher air demand calls for a larger port; drop to size 300 or 400 if your consumption is lighter. This unit has the 5 um element (code W) - choose it when downstream valves and instruments need finer filtration than the 40 um standard. The M in the code sets a manual drain: an operator opens the bowl drain to expel collected water, so pick automatic (A) or differential-pressure (default) if the unit sits where regular draining is impractical. The embedded square MPa gauge is standard; psi or bar scales and an external round gauge are orderable. The K code adds a reverse (check) valve. PT is the standard thread; G and NPT are catalogue options ordered by suffix. Flow is published as curves, not a single rating - send us your demand and we will confirm sizing against 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 a single rated figure, so we do not quote a number here. Tell us your line pressure and air demand and we will confirm the flow from the datasheet for this exact 3/4 in NPT unit before you order.
The M in the code sets a manual drain: an operator opens the bowl drain to expel collected water and contaminants. If the unit is mounted where regular draining is impractical, order the automatic (A) or differential-pressure (default) drain variant instead - the 5 um W-grade element, NPT thread and check valve stay the same.
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.