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 GFR600-25MLF2WTK is a filter regulator: one body that removes water and particulate from compressed air and then regulates downstream pressure. This size-600 unit is configured with 1 in NPT ports, a 5 um filtering element (code W), a manual drain on the bowl, and the low-pressure regulator type. The bowl on size-600 units is aluminium alloy, a square pressure gauge scaled in psi is fitted, a reverse (check) valve is included, and the unit ships with its mounting bracket.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um standard or 5 um filtering elements, standard or low-pressure regulation, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm the 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, 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. |
| (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) |
Feeding powder-coating spray equipment where the coating line runs at reduced pressure and the 5 um element protects the applicator from water and fine particulate in the shop air.
Supplying filtered, regulated air to conveyor-mounted pneumatic cylinders on a packaging line, with the check valve holding the downstream circuit against backflow.
Conditioning the air feeding low-pressure air-jet and tension circuits on textile machinery, where fine filtration and a stable reduced pressure are needed at a 1 in main.
Step up through sizes 200, 300, 400 and 600 to match the port and the flow your line needs; this unit is the 600 size with 1 in NPT ports, the largest in the family. Drain choice matters: differential-pressure drains automatically as flow passes, automatic drains empty the bowl on a cycle, and manual drains (as fitted here) are emptied by hand, which suits installations checked on a schedule. Filter grade is 40 um standard or 5 um (code W) for finer protection; this configuration carries the 5 um element. Gauge scale can be MPa, psi or bar, and thread can be PT (standard), G or NPT on order.
Flow for this family is published as curves, not a single rated figure, so we cannot quote a number here. Send us your application details and we will confirm the datasheet and sizing before you order, including the regulation range of the low-pressure type, which is not published as a single figure.
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 family as curves, not as a single rated number, so we do not quote a figure here. Contact us with your application details and we will confirm the datasheet and check the sizing against your required flow before you order.
The M in the code selects a manual drain: the bowl is emptied by hand, which suits installations inspected on a schedule. The GFR family also offers a differential-pressure drain (the default, which drains as air flows through) and an automatic drain; choose the type that matches how often the installation is attended.
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.