The AirTAC GFR600-25 AirTAC Filter Regulator 1 in NPT 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 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 GFR600-25 is an AirTAC filter regulator: one body that removes water and particulate from compressed air and holds a set downstream pressure. This unit is the size 600 body with a 1 in NPT port, built as the low-pressure type (code L) for circuits that regulate below the standard type's settings. It carries the standard 40 um filter element, a differential-pressure drain that bleeds collected condensate as air flows through, and an aluminium alloy bowl - the bowl material used at size 600. A square gauge reading in MPa is fitted, a reverse/check valve (code K) is included, and a mounting bracket is supplied. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200 to 600 with ports from 1/8 in to 1 in, PT, G and NPT threads, standard or low-pressure regulation, three drain types and 40 um or 5 um filtration. Rated flow for this family is published as curves rather than a single figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR600-25 AirTAC Filter Regulator 1 in NPT 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 | Differential-pressure 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". |
| (blank) | Drain: Differential-pressure 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. |
| 1 | Gauge scale: MPa. 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. |
| 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" · 40 µm |
|---|---|
| One size down | GFR400 |
| Add lubrication | GFC600-25 (two-unit set) |
Feeds the air-knife stations that strip rinse water from cans before filling, where a low setpoint and clean, dry, regulated air keep the blow-off pattern consistent across the line.
Supplies the low-pressure cylinders that push cartons between lanes on a distribution conveyor, with the 40 um element protecting valve spools from water and debris in shop air.
Regulates supply to the low-pressure swing clamps and support cylinders on a CNC fixture, where the reverse/check valve helps hold the circuit if upstream pressure dips.
Step through the size range by port and demand: 200, 300, 400 and 600 bodies run from 1/8 in up to a 1 in port, so this 600 with its 1 in NPT connection suits supply lines serving high-demand circuits. Choose the low-pressure type (as here) when the setpoint sits well below standard regulator settings; the standard type covers ordinary circuits. Drain is differential-pressure by default, with automatic (A) and manual (M) versions available. Filtration is 40 um standard; specify W for the 5 um element where finer particulate capture matters. The fitted square gauge reads in MPa, with psi and bar scales and an external round gauge as options. Thread here is NPT; PT and G are order options. A bracket is included; code J deletes it. Flow is published as curves, not a single rating, so ask us to 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. Send us your line demand and operating pressure and we will confirm the sizing from the datasheet on request.
L marks the low-pressure regulator type, intended for circuits that hold settings below the standard type's range. The exact range for this variant is not published; ask us and we will confirm it from the datasheet. The standard type is available if your circuit regulates at ordinary settings.
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.