The AirTAC GFR600-25ALF3T 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 PT1" 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 GFR600-25ALF3T is a size 600 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body, on a 1 in NPT port. This configuration carries an automatic drain, so collected condensate is discharged without manual attention, and the standard 40 um filter element for general-duty air preparation. It is the low-pressure type, intended for circuits that need gentler regulation than a standard unit, and the embedded square gauge reads in bar so the set pressure is visible at a glance. The aluminium alloy bowl suits this large size, and a mounting bracket is included.
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, a choice of automatic, manual or differential-pressure drains, a 5 um (code W) element where finer filtration is needed, and G or NPT thread options alongside the PT standard. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR600-25ALF3T AirTAC Filter Regulator NPT1 Low-Pressure |
|---|---|
| Series | GFR600 filter regulator |
| Port size | PT1" (NPT 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, 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. |
|---|---|
| 25 | Port size PT1". 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. |
| (blank) | Filtering grade 40 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 · PT1" · 40 µm |
|---|---|
| One size down | GFR400 |
| Add lubrication | GFC600-25 (two-unit set) |
Feeding filtered, regulated air to the pneumatic cylinders on a carton-forming or case-sealing conveyor, where the automatic drain keeps condensate out of the valves during continuous shifts.
Supplying low-pressure regulated air to blow-off nozzles or air knives that clear dust and moisture from product on a processing line, with the bar gauge giving operators a visible set point.
Conditioning the air feeding clamping and workholding circuits on a CNC cell, where the low-pressure type regulator holds a gentler setting than a standard unit and the 40 um element protects the clamping valves.
Size 600 with a 1 in port is the largest step in the GFR range; size up or down (200/300/400/600) against the flow your line needs, since port size tracks flow capacity. Drain choice matters in daily use: automatic (this model) empties the bowl on its own, manual needs an operator, and differential-pressure drains only when the element loads up. The standard 40 um element suits general air preparation; specify code W for 5 um where finer filtration is required. The embedded square gauge on this unit reads in bar, with MPa, psi or bar scales and an external round gauge available as options. Thread is NPT here; PT is the standard and G is also a catalogue option to order. A bracket is included on this model.
One honest note on sizing: AirTAC publishes flow as curves, not a single rated number, so we cannot quote a rated flow figure. Send us your application details and we will confirm the datasheet figures 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 rated flow number. Tell us your line conditions and required flow, and we will confirm the datasheet figures for this size 600, 1 in NPT unit on request before you order.
The A in the code sets the automatic drain: the bowl discharges collected condensate by itself, so the unit suits installations that run unattended or are hard to reach. Manual-drain and differential-pressure-drain versions of the same size are available if you prefer operator control or drain-on-load behaviour.
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.