The AirTAC GFR600C25ALF3WTK AirTAC Filter Regulator NPT1 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 See datasheet 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 AirTAC GFR600C25ALF3WTK is a size-600 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is built around a 1 in NPT port for high-flow lines, a 5 um filter element (code W) for finer filtration than the standard 40 um grade, and an automatic drain that expels collected condensate without manual attention. The regulator is the low-pressure type, and the embedded square gauge is fitted with a bar scale; a reverse/check valve is also fitted and a mounting bracket is included. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C (non-freezing). Because this is the 600 size, the bowl is aluminium alloy rather than the polycarbonate used on smaller sizes.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port options from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, standard or 5 um (W) filtration, standard or low-pressure regulation, gauge scale options, an optional reverse/check valve, and PT, G (BSPP) or NPT threads. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | GFR600C25ALF3WTK AirTAC Filter Regulator NPT1 Low-Pressure |
|---|---|
| Series | GFR600 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 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 | Differential-pressure drain |
| Bowl material | Aluminium alloy |
| Pressure gauge | Fitted — factory standard, Factory standard 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. Standard type, regulating 0.15 - 0.9 MPa (20 - 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. |
|---|---|
| C2 | Port size See datasheet. 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)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 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. |
| (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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR400 |
| Add lubrication | GFC600-C2 (two-unit set) |
Feeds filtered, pressure-controlled air to spray-booth and paint-circulation circuits on an automotive assembly line, where the 5 um element helps protect finish quality and the low-pressure regulator suits low setpoints.
Supplies cleaned and regulated air to the stopper, gate and pusher cylinders along a beverage bottling conveyor, with the automatic drain handling condensate on a line that runs unattended across shifts.
Conditions the air feeding clamps and actuators on a laboratory test rig, where the 5 um grade, bar-scale square gauge and check valve give a stable, readable, backflow-protected supply at the panel.
Start with the port and size step: this unit is size 600 with a 1 in NPT port, the largest step in the GFR range, so match it to lines whose air demand sits near the top of the family's flow curves - and ask us to check those curves against your consumption before ordering. The 5 um element (code W) is the right choice 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; differential-pressure and manual drains remain available if you prefer condensate removal tied to pressure drop or scheduled servicing. The low-pressure regulator type is intended for circuits that operate well below standard line pressures; its exact adjustment range is not published in the material we hold, so confirm it with us for your setpoint. The fitted square gauge reads in bar; MPa and psi scales and an external round gauge are alternatives. Thread is NPT here, with PT (standard) and G (BSPP) available to order, and a mounting bracket is included.
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 number, so we do not quote a flow figure for this unit. Send us your air consumption and line pressure and we will confirm the sizing against the datasheet curves on request before you order.
The A in the code means the bowl drains itself: collected condensate is expelled automatically, which suits installations that run unattended or are awkward to reach. The GFR family also offers a differential-pressure drain (the default) and a manual drain (code M) if you prefer condensate removal tied to pressure drop or to scheduled servicing.
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.