The AirTAC GFR600-25 AirTAC Filter Regulator 1 in NPT Auto Drain 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 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 size-600 filter regulator: water and particulate filtration plus downstream pressure regulation in a single body. This configuration carries a 1 in NPT port for high-flow main air lines, an automatic drain that expels collected condensate without manual attention, a standard 40 um filter element, and a 0.15-0.9 MPa (20-130 psi) regulation range. The size-600 bowl is aluminium alloy, a round psi gauge is fitted for setpoint monitoring, and a reverse/check valve is built in to hold downstream pressure if the supply is interrupted. No mounting bracket is included with this code.
This is a genuine AirTAC part from the GFR range, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, optional 5 um (code W) filtration, manual or differential-pressure drain alternatives, and G, NPT or PT thread options. Published flow data appears as curves rather than a single rating, so we confirm the datasheet figures for your application on request.
| Model | GFR600-25 AirTAC Filter Regulator 1 in NPT Auto Drain |
|---|---|
| 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 | Standard 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 — round, psi 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. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). 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)). |
| (blank) | Standard 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. |
| 2 | Gauge scale: psi. 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) |
Filter and regulate the main air feed ahead of a bottling line's pneumatic valve manifold, with the automatic drain handling condensate on a line that runs unattended through long shifts.
Condition shop air entering a CNC machining cell so clamps and tool-change actuators receive filtered air at a stable regulated pressure, with the psi gauge giving operators a visible setpoint.
Serve a high-flow packaging conveyor section where diverters and pushers need both clean air and regulated pressure, and the check valve holds the circuit if the plant supply dips.
Step up through the GFR sizes (200/300/400/600) as your port and air demand grow; this size-600 unit takes a 1 in port, the largest in the range. Choose the drain to suit access: automatic (this code) for unattended condensate removal, or manual and differential-pressure variants where you prefer controlled discharge. The standard element is 40 um; specify code W for 5 um when finer particulate capture matters. Gauges are available with MPa, psi or bar scales, embedded square or external round. PT is the standard thread; G (BSPP) and NPT are orderable options, as this NPT code shows. Brackets are optional on GFR units, and this code omits one. Because flow is published as curves rather than a single rated figure, ask us to confirm sizing against your application before ordering.
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 GFR flow data as performance curves rather than a single rated figure, so we do not quote one number. Tell us your line pressure, set pressure and air demand, and we will confirm the flow and full datasheet figures for the GFR600-25 on request before you order.
T specifies the NPT thread on the 1 in port (PT is the catalogue standard, with G/BSPP also orderable), and K means a reverse/check valve is fitted, holding downstream pressure if the supply is interrupted. The A earlier in the code is the automatic drain, and C2 is the round gauge with a psi scale.
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.