The AirTAC AirTAC GFR600-25L 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 AirTAC GFR600-25L is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body, so one 1 in NPT unit does both jobs on a size-600 air line. This configuration is the low-pressure type, fitted with a round MPa pressure gauge, a reverse/check valve, and the standard 40 um filter element. The bowl is aluminium alloy (size 600), and the differential-pressure drain bleeds collected condensate automatically whenever the pressure differential is sufficient - no daily manual draining. No mounting bracket is included with this code.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, a choice of PT, G or NPT thread, manual, automatic or differential-pressure drains, a 5 um element option (code W), and square or round gauges in MPa, psi or bar scales. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | AirTAC GFR600-25L 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 — round, 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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. 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) |
Feeding case-sealing and wrapping heads on a bottling hall's 1 in ring main, where filtered air held at a low regulated pressure drives the actuators and the check valve holds the setting against line surges.
Conditioning air for pneumatic gates, stops and diverters along a food-plant conveyor run, with the 40 um element protecting cylinder seals and the differential drain keeping condensate off the line automatically.
Supplying filtered, regulated air to quarter-turn valve positioners and pilot solenoids on a treatment-plant header, where the low-pressure type suits the actuators' modest pressure window and the MPa gauge gives a local reading.
Size 600 with a 1 in port is the largest GFR step - choose it when your line flow and pipe size demand the big connection, and step down to 300/400 if a smaller port matches your pipework. This code is the low-pressure type, so confirm the regulated-pressure window you need with us before ordering; the standard-type adjustment range does not apply to this variant. The 40 um element is the standard grade - specify W for the 5 um fine grade if downstream equipment needs it. The differential-pressure drain is hands-off; choose automatic (A) or manual (M) codes if your duty cycle suits them better. The round MPa gauge is fitted here; square gauges and psi or bar scales are orderable. Thread is NPT on this code; PT (standard) and G are the other catalogue options. Bracket: none included (J code).
Because flow is published as curves and not a single rated figure, send us your application details 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 as a single rated number, so we do not quote a figure here. Send us your line conditions and required flow and we will confirm the sizing from the datasheet on request before you order.
The L code makes this a low-pressure regulator variant rather than the standard type; the exact adjustment range for the low-pressure type is not published in our sheet, so confirm your required regulated-pressure window with us. The drain on this code is differential-pressure: condensate is discharged automatically when the pressure differential is sufficient, with no manual draining required.
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.