The AirTAC GFR600-25 AirTAC Filter Regulator NPT1 Low-Pressure 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: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 600 unit is built around a 1 in NPT port for high-flow supply lines. It carries the W filter grade (5 um element instead of the standard 40 um), an automatic drain that bleeds collected condensate from the bowl without operator attention, and the low-pressure regulator type for circuits that run below standard line pressures. The embedded square gauge is fitted with a bar scale, a reverse/check valve is fitted to hold downstream pressure when upstream supply is lost, and the mounting bracket is included. The aluminium alloy bowl suits this 600 size.
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, 40 um or 5 um filtration, square or square-gauge scales in MPa, psi or bar, PT standard thread with G and NPT as order options, and an optional reverse/check valve. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application on request.
| Model | GFR600-25 AirTAC Filter Regulator NPT1 Low-Pressure |
|---|---|
| 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 | 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. |
| (blank) | Mounting bracket included. |
| (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. |
| 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) |
Feeding clamps and fixtures on a CNC machining centre, where filtered 5 um air and a stable low-pressure setting keep workholding consistent across the shift.
Conditioning the main air drop on a carton-forming and sealing line, with the automatic drain clearing condensate during continuous production and the check valve holding the circuit if supply dips.
Serving as the filter-regulate stage ahead of valve manifolds in a robotic assembly cell, protecting directional valves and actuators from water and fine particulate.
Step up or down through the GFR sizes (200/300/400/600) and their ports (1/8 in to 1 in) to match the flow your line needs - the 600 size with its 1 in port serves the largest supply lines in the range. Choose the drain: automatic (this model) for unattended condensate removal, manual for supervised drains, or the differential-pressure default. Choose 40 um for general air prep or the 5 um W grade where finer filtration protects downstream equipment. Gauge scale is selectable (MPa, psi, bar); this unit ships with the square gauge on bar. Thread is PT as standard with G (BSPP) and NPT as order options - this code specifies NPT. Brackets are included unless the J (no-bracket) option is ordered.
One honest note before ordering: AirTAC publishes flow as curves, not a single rated number, so send us your application details and we will confirm the datasheet figures and correct sizing before you commit.
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 rather than a single rated figure, so we do not quote one number. Tell us your line conditions and required flow, and we will confirm the datasheet curves and correct sizing on request before you order.
The A in the code selects the automatic drain: the bowl bleeds collected condensate by itself, so the unit suits installations that run unattended or are hard to reach. Manual and differential-pressure drain versions of the same GFR600 configuration are available if your maintenance routine prefers a supervised drain.
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.