The AirTAC GFR600-25 AirTAC Filter Regulator NPT1 Low-Pressure 5um 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 size-600 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration is the low-pressure type with a 5 um filter element (code W), an automatic drain that discharges collected condensate without manual attention, a 1 in NPT port, and a reverse/check valve fitted. The size-600 bowl is aluminium alloy, and an embedded square gauge reading in psi is included so the set pressure is visible at the unit.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port options from 1/8 in to 1 in, PT as standard thread and G or NPT as order options, differential-pressure, automatic or manual drains, 40 um or 5 um filtration, gauge scale choices, and a reverse/check valve option. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR600-25 AirTAC Filter Regulator NPT1 Low-Pressure 5um |
|---|---|
| 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, 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. 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. |
| 2 | Gauge scale: psi. 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) |
Packaging lines that clamp, hold or press with air at reduced set pressures need clean, regulated supply. This unit filters the plant air to 5 um, holds the low set pressure the clamp cylinders were designed for, and its automatic drain keeps condensate out of the circuit during long shifts.
Conveyor blow-off and air knife stations run continuously and collect water fast. Fed through this filter regulator, the air is dried and filtered before the nozzles, the pressure stays at the low setting the station requires, and the automatic drain empties the aluminium bowl without operator rounds.
Pneumatically actuated process valves and dampers often specify actuator supply well below full line pressure. This unit conditions the supply - 5 um filtration protects the actuator seals and positioner - regulates it to the low set point shown on the psi gauge, and the check valve holds the setting against upstream disturbance.
Start with the port: this unit is the 1 in NPT connection at size 600, the largest step in the GFR range - step down to 300/400 if your line runs smaller ports and lower air demand. The 5 um element (W) suits air that feeds sensitive valves, actuators or instruments; choose the standard 40 um grade when general plant air is enough. The automatic drain here keeps condensate off your floor without daily attention; manual and differential-pressure drains are available on other configurations. The square gauge is set to psi; MPa and bar scales exist as options, and an external round gauge can be ordered. Thread is NPT on this code; PT is standard and G is available. A bracket is included for panel or wall fixing.
Because flow is published as curves and not a single rated figure, send us your application's air demand 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes GFR flow as curves, not as a single rated number, so we do not quote a figure here. Tell us your port size, working pressure and air demand, and we will confirm the flow from the datasheet for your application before you order.
The L in the code selects the low-pressure regulator type, intended for circuits whose set pressure sits below the standard type's range. The exact regulation range for this low-pressure configuration is not published in the material we hold, so ask us to confirm it against the datasheet. Everything else on this code - 1 in NPT port, 5 um element, automatic drain, aluminium bowl, square psi gauge and reverse/check valve - is unchanged.
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.