The AirTAC GFR600-25T 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 AirTAC GFR600-25T 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 the low-pressure type (code L), built for circuits that run below standard line pressure; the exact adjustment range for the low-pressure type is not published in the general data, so confirm it against your application before ordering. It carries a 40 um standard filter element, a differential-pressure drain that bleeds collected condensate automatically when the pressure differential rises, and a 1 in NPT port (T = NPT thread). Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. No pressure gauge is fitted (code N) and no mounting bracket is included (code J). At size 600 the bowl is aluminium alloy.
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, a choice of differential-pressure, automatic or manual drain, a 40 um standard or 5 um (W) fine element, standard or low-pressure regulation, optional gauge, optional reverse/check valve, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm flow and datasheet figures for your application on request.
| Model | GFR600-25T 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 | Not fitted |
| 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". |
| (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. |
| N | No pressure gauge (N). |
| (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. |
| 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) |
Feeds filtered, regulated air to carton-sealing and case-erector circuits that run below standard plant pressure, with the differential-pressure drain keeping condensate off the actuators.
Serves loom and spinning-frame air circuits where a large 1 in NPT connection supplies multiple drop points, and the 40 um element protects valves and cylinders from water and grit.
Conditions the supply to diverter valves and control panels on bulk-material handling lines, combining filtration and low-pressure regulation in one body to save panel space.
Size 600 with a 1 in port is the largest step in the GFR range; step up or down through sizes 200/300/400/600 as your line flow demands, and let us confirm the sizing against the published flow curves before you order. This unit is the low-pressure type (L), so verify the control range suits your circuit - the exact figure is not published in the general data and we will confirm it on request. The differential-pressure drain is the default and suits most steady-duty installations; an automatic (A) or manual (M) drain can be ordered instead. The 40 um element is standard here; specify W for the 5 um fine grade if downstream equipment needs it. No gauge is fitted on this code; gauges with MPa, psi or bar scales are available as options. The T suffix gives NPT thread; G (BSPP) and PT are the other catalogue options. A mounting bracket can be added if the code omits J.
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 GFR flow as curves, not as a single rated figure, so we do not quote a number here. Tell us your line pressure and required flow and we will confirm the sizing from the datasheet on request.
Yes. The N suffix on this model means no gauge is supplied, but the GFR family accepts an embedded square gauge or an external round gauge with MPa, psi or bar scales as order options. Order a gauge variant of the code if you need one.
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.