The AirTAC AirTAC GFR600-25 Filter Regulator NPT 1 in, 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 sets downstream pressure in a single body, so one 1 in NPT connection handles both jobs. This configuration carries the 5 um filter element (code W) for finer filtration than the standard 40 um grade, a manual drain for controlled bowl purging, a round MPa pressure gauge, and a reverse/check valve that holds the set pressure when the upstream supply is removed. At size 600 the bowl is aluminium alloy, and the unit is supplied with a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulator adjusts from 0.05 to 0.9 MPa (7-130 psi), and the working 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 ports from 1/8 in to 1 in, and is available with your choice of drain type, filter grade, gauge style and scale, thread (PT standard, with G and NPT as order options), and bracket. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | AirTAC GFR600-25 Filter Regulator NPT 1 in, 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 | 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 | Manual drain |
| Bowl material | Aluminium alloy |
| Pressure gauge | Fitted — round, MPa 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 0.05 - 0.9 MPa (7 - 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". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| (blank) | Standard 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. |
| 1 | Gauge scale: MPa. 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) |
Clean, regulated air to fixture clamps and tool-change cylinders on a machining centre, with the 5 um element protecting tight-tolerance valve spools and the check valve holding clamp pressure during supply dips.
Point-of-use preparation at paint line drops, where the 5 um grade keeps particulate out of spray air and the regulator holds a steady gun supply pressure across a shift.
Filtering and regulating the air feeding conveyor stopper cylinders and case-packing actuators, with the 1 in port serving a main header drop and the manual drain purged during scheduled line checks.
Start with the port step: this unit is size 600 with 1 in NPT threads, the largest port in the GFR range, suited to lines where a 1 in connection is already specified. Choose the drain to match maintenance practice: manual drain (this unit) purges only when an operator opens it, automatic drain empties without attention, and the differential-pressure default drains on a pressure drop. Choose the 5 um element (code W) where downstream equipment needs finer filtration than the 40 um standard. Gauge options are the embedded square gauge or the external round gauge (this unit, MPa scale), with MPa, psi or bar scales available. Thread is PT as standard, with G (BSPP) and NPT ordered as options; a bracket can be included or omitted (code J). Flow for this family is published as curves, not a single rated figure, so send us your flow and pressure requirements 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 flow for the GFR series as curves, not as a single rated number, so we do not quote a figure here. Send us your required flow and working pressure and we will confirm the datasheet curve figures for this exact unit before you order.
The M in the code sets a manual drain: collected water is emptied by opening the drain only when an operator chooses, rather than automatically. It suits installations with regular maintenance rounds. If you need unattended draining, the same unit is available with an automatic drain (code A) or the differential-pressure drain that is the default.
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.