The AirTAC AirTAC GFR600-25 Filter Regulator 1 in NPT 5 um 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 size 600 unit is built around a 1 in NPT port, and this configuration carries the 5 um filter element (code W) instead of the standard 40 um, a manual drain on the bowl, the low-pressure regulator type, a round pressure gauge with a psi scale, and a mounting bracket. The aluminium alloy bowl is specific to the 600 size, and the manual drain means an operator opens the drain valve to expel collected condensate.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and options including automatic or manual drains, 40 um or 5 um filtration, gauge style and scale, and PT, G or NPT threads. Flow figures for this model are published as curves rather than a single rating, so ask us and we will confirm the datasheet figures against your application.
| Model | AirTAC GFR600-25 Filter Regulator 1 in NPT 5 um |
|---|---|
| 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 — round, psi 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). |
| C | Gauge shape: Round. 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. |
| (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) |
Fixture clamps and swing cylinders often hold at a lower regulated pressure than the main plant header. A low-pressure type filter regulator at the fixture drop cleans the air of water and grit and holds the clamp circuit at its set pressure, with the psi gauge giving the operator a direct reading.
Test benches and laboratory rigs need clean, low-pressure air for instruments and small actuators. The 5 um element protects sensitive gear from particulate, the regulator sets the bench pressure, and the manual drain lets the technician blow down collected water between runs.
Packaging machinery - case erectors, carton sealers, label heads - runs on air that must be dry, filtered and held at a moderate regulated pressure. A filter regulator at each machine feed conditions the supply in one body, and the round psi gauge lets line staff verify the setting at a glance.
Start with size and port: the 600 frame with its 1 in port is the largest step in the GFR line, and the right choice depends on the flow your line needs - we can confirm the flow curve against your demand before you order. This unit is the low-pressure regulator type, so it suits circuits that hold a lower regulated pressure than the standard type targets; we will confirm the exact adjustment range from the datasheet on request. Filtration is the 5 um element here, one grade finer than the 40 um standard, which matters for valves and actuators that tolerate less particulate. The drain is manual, so plan a routine blow-down; an automatic drain variant exists if you cannot schedule that. The gauge fitted is the round type with a psi scale, and square-gauge or MPa/bar scales are alternatives. Thread is NPT on this code; PT is the catalogue standard and G is also orderable. A mounting bracket is included.
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, not as a single rated number, so there is no one figure we can honestly quote. Send us your line demand and we will confirm the flow curve and sizing from the datasheet before you order.
The M in the code sets a manual drain: an operator opens the drain valve to release collected condensate from the bowl. It is the right choice when someone is on site regularly. If the unit is mounted where blow-downs are easily missed, ask us about the automatic-drain variant of the same filter regulator.
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.