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 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: one body that removes water and particulate from compressed air and then regulates downstream pressure. This size 600 unit has 1 in NPT ports, a 5 um filtration element (the finer W grade, versus the standard 40 um), a manual drain bowl in aluminium alloy, a low-pressure regulator type, an embedded square gauge reading in psi, and a built-in reverse/check valve. No mounting bracket is fitted. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and options including drain type, filter grade, gauge scale, thread form (PT standard, with G and NPT as order options), bracket and check valve. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing figures on request.
| 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 | 0.05 - 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, 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". |
| 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. |
| J | Supplied without bracket. |
| (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) |
On a stamping or forming press fed from a plant air main, this 1 in filter regulator cleans the supply to 5 um and holds a set downstream pressure for the press cylinders, with the check valve holding the circuit if the main drops.
A bottling or canning line running many large air cylinders from a 1 in header uses this unit to strip water and particulate before distribution and to regulate the header pressure for the filler and capper actuators.
In a warehouse conveyor system with pneumatic diverters, stops and gate actuators, this filter regulator conditions the main supply and sets the operating pressure for the gate cylinders, with the psi gauge giving a local setpoint check.
Size 600 with 1 in NPT ports is the largest step in the GFR range, so start there when the line volume is high and work down to 400/300/200 if the port is smaller. This unit carries the 5 um element (code W); choose it when downstream equipment needs finer filtration than the standard 40 um. The manual drain (code M) means someone opens the drain by hand, so it suits attended installations; automatic or differential-pressure drains are available on other variants. The low-pressure regulator type (code L) is for circuits running below standard regulator ranges - the exact adjustment range for this low-pressure version is not published, so confirm it with us. The square gauge reads in psi; MPa or bar scales and an external round gauge are options. Thread here is NPT (code T); PT is the standard form and G is also orderable. No bracket is fitted (code J), and the K code adds a reverse/check valve. Because flow is published as curves rather than a single rating, 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 flow for the GFR series as curves, not as a single rated number, so we do not quote a figure here. Tell us your line conditions and required flow and we will confirm the sizing from the datasheet on request before you order.
The M in the code means the aluminium bowl is drained by hand, which suits attended installations where an operator can bleed accumulated water on a schedule; automatic and differential-pressure drains are available on other variants. The L code marks the low-pressure regulator type, intended for circuits running below standard regulator ranges - its exact adjustment range is not published, so confirm it with us.
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.