The AirTAC AirTAC GFR600-25 Filter Regulator 1 in NPT, 5 um 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 AirTAC GFR600-25 is a filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This size-600 unit is configured with a 1 in NPT port, a 5 um filter element (the finer of the two published grades), and an automatic drain that expels collected condensate without manual attention. It is the low-pressure type, and the embedded square gauge on the body reads in bar. Because it is size 600, the bowl is aluminium alloy, and this configuration is supplied without a mounting bracket.
This is a genuine AirTAC part. The GFR family spans sizes 200 to 600 with port options from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drain, 40 um or 5 um filtration, gauge scale options, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | AirTAC GFR600-25 Filter Regulator 1 in NPT, 5 um |
|---|---|
| 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, 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. |
| J | Supplied without bracket. |
| (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. |
| 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. |
| (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" · 5 µm |
|---|---|
| One size down | GFR400 |
| Add lubrication | GFC600-25 (two-unit set) |
Filtered and pressure-controlled air at each paint booth drop: the 5 um element strips water and particulate before the regulator sets a stable low supply pressure to the spray equipment, and the automatic drain keeps the aluminium bowl clear between shifts.
A single unit feeding a bank of pneumatically actuated butterfly and knife-gate valves: filtration protects the positioner and solenoid internals, regulation holds the actuator supply steady, and the bar-scale square gauge gives operators a local set-point check.
Point-of-use air conditioning for a carton case erector and its conveyor cylinders on a 1 in trunk line: the 5 um grade protects valve and cylinder seals from grit and moisture while the low-pressure type regulator matches the machine's supply requirement.
Step up through the GFR sizes (200/300/400/600) as your port and air demand grow; this unit sits at the top of the range with a 1 in NPT connection. Choose the drain to suit access: automatic (this unit) where the bowl is hard to reach, manual where you prefer operator control, or the differential-pressure default. Pick 40 um for general protection or 5 um (code W, as here) for finer downstream air. Gauge scale is selectable (MPa, psi or bar; this unit reads bar), and thread can be ordered as PT (standard), G or NPT. A mounting bracket is optional (this unit ships without one). Note this is the low-pressure type: its regulation range is not published as a single figure, so confirm it with us against your set pressure. Flow is published as curves, not a single rating, so ask us to confirm sizing against the application before ordering.
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 performance curves rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Tell us your application and required flow, and we will confirm the sizing from the datasheet curves on request before you order.
The A in the code GFR600-25ALJF3WT selects the automatic drain, which expels collected condensate from the bowl without operator attention - useful where the unit is mounted out of easy reach. Manual-drain and differential-pressure-drain versions of the same GFR600 size are available; specify the drain code you prefer when ordering.
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.