The AirTAC GFR600-25 AirTAC Filter Regulator 1 in NPT 5 um Auto Drain 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 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 GFR600-25 is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This 600-size unit is threaded 1 in NPT and carries the 5 um filter element (code W) for finer protection than the 40 um standard. Condensate is drained automatically, the regulator is the low-pressure type, and the unit is supplied with an embedded square MPa gauge and a reverse/check valve fitted. It mounts without a bracket, and the aluminium alloy bowl suits this top size of the range.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, PT as the standard thread and G or NPT as order options, drain choices of differential-pressure, automatic or manual, and 40 um or 5 um filtration. Flow is published as curves rather than a single rating, so we confirm flow and other datasheet figures on request.
| Model | GFR600-25 AirTAC Filter Regulator 1 in NPT 5 um Auto Drain |
|---|---|
| Series | GFR600 filter regulator |
| Port size | PT1" (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. |
|---|---|
| 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. |
| J | Supplied without bracket. |
| (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 · PT1" · 5 µm |
|---|---|
| One size down | GFR400 |
| Add lubrication | GFC600-25 (two-unit set) |
On a stamping or forming line, this 1 in filter regulator cleans the shop air feeding a large pneumatic press and holds the working pressure the press cycle needs, with the low-pressure type suiting circuits regulated below standard setpoints and the automatic drain keeping condensate off the valve stack.
At the drop point where a factory ring main feeds a production bay, this unit strips water and scale from the main supply and regulates the bay's pressure in one body, protecting every cylinder, actuator and air tool downstream from dirt and overpressure.
On a water-treatment or chemical dosing skid where quarter-turn valves are air-actuated, this filter regulator conditions the instrument air supply and regulates it for the positioners and actuators, with the 5 um element and reverse/check valve helping keep the actuation circuit clean and held.
Size and port step up together: 200, 300, 400 and 600 cover ports from 1/8 in to 1 in, and this 600-size unit sits at the top of the range with a 1 in NPT connection, so pick the size against the flow your line needs. Drain type is a real choice: automatic (as here) for points nobody visits daily, manual where checks are scheduled, or the differential-pressure default. Filter grade is 40 um standard or 5 um (code W) where downstream equipment needs finer air - this unit carries the 5 um element. Gauge scale (MPa, psi or bar) and thread (PT standard, G or NPT to order) are selected when ordering. Flow is published as curves rather than 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.
AirTAC publishes GFR flow as performance curves rather than a single rated figure, so we do not quote a number here. Tell us your application and line conditions and we will confirm the flow data from the datasheet on request before you order.
L marks the low-pressure regulator type: the same filter-plus-regulation function, built for circuits regulated to lower setpoints than the standard version. The exact regulated range for this type is not published on our sheet, so we confirm it on request. The rest of the code decodes as: 600 size, 1 in NPT port, automatic drain, no bracket, square MPa gauge, 5 um filter element, and a reverse/check valve fitted.
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.