The AirTAC GFR600-25 NPT AirTAC Filter Regulator 1 in 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 manual drain and regulates 0.05 - 0.9 MPa (7 - 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 600-size configuration carries a 1 in NPT port, a 5 um filter element (the finer W grade, versus the standard 40 um), a manual drain on the bowl, and the low-pressure regulator type. The bowl on size 600 is aluminium alloy, a mounting bracket is included, and no reverse/check valve is fitted. The embedded square gauge is fitted with an MPa scale; an external round gauge is an optional alternative.
This is a genuine AirTAC part. GFR filter regulators are published in sizes 200, 300, 400 and 600, with port options from 1/8 in to 1 in, PT as the standard thread and G (BSPP) or NPT as order options, a choice of differential-pressure, automatic or manual drain, 40 um or 5 um filtration, standard or low-pressure regulation, and gauge or no-gauge builds. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing figures for your application on request.
| Model | GFR600-25 NPT AirTAC Filter Regulator 1 in Low-Pressure |
|---|---|
| Series | GFR600 filter regulator |
| Port size | PT1" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual drain |
| Bowl material | Aluminium alloy |
| Pressure gauge | Fitted — square, MPa 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". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 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. |
| 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) |
Filtering and regulating the 1 in main air feed to a stamping press's clamp and cushion cylinders, with the 5 um element protecting directional valves from particulate carryover.
Conditioning shop air ahead of a paint or powder coating booth: the 5 um grade helps keep water and debris out of spray equipment, with manual drain bled at shift checks.
Regulating filtered air to a wide blow-off header that clears containers on a high-volume conveyor, where the 600 size and 1 in port suit a large-diameter supply main.
Start with the port step: the 600 size is the largest in the GFR range and this unit is built with a 1 in NPT port, so match it to the line size and the air demand of the circuit. Choose the drain next: this build is manual drain, which suits attended installations where an operator can bleed the bowl; automatic or differential-pressure drain versions are available if the unit will run unattended. This unit carries the 5 um W element - select that grade where downstream valves and actuators need finer filtration than the 40 um standard. The low-pressure regulator type is intended for circuits that run below the standard regulator range; the exact adjustment range for the low-pressure type is not published in our sheet, so ask us to confirm it against your set pressure before ordering. The fitted square gauge reads in MPa, with psi and bar scale options and an external round gauge available. PT is the standard thread; G and NPT are catalogue options to order, and this unit is built with NPT. A mounting bracket is included.
One honest routing note: AirTAC publishes flow for this series as curves, not as a single rated number, so we do not quote a flow figure here. Send us your application's flow and pressure requirements 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. Without the K option, air cannot flow back 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 a flow number. Tell us your line pressure, set pressure and required air demand, and we will confirm the sizing against the datasheet on request before you order.
This build carries the M code for manual drain, meaning the bowl is bled by hand at intervals. GFR filter regulators are also available with automatic drain (code A) or the differential-pressure drain (blank), which suit unattended or continuously running installations - ask us to quote the alternative build if that fits your site better.
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.