The AirTAC GFR600-25 AirTAC Filter Regulator G1 Low-Pressure 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 GFR600-25 is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and holds a regulated downstream pressure in a single body. This unit is built on the size-600 frame with a G1 (1 in) port, and it is the low-pressure type, intended for circuits regulated to low set pressures; the exact adjustment range for the low-pressure type is not published, and we confirm it on request. It carries a 5 um filter element (code W), a manual drain on the aluminium-alloy bowl, an embedded square gauge scaled in psi, and a reverse/check valve. No mounting bracket is fitted.
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, in PT as standard with G and NPT threads to order, plus a choice of drain type, filter grade, gauge scale and bracket. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and any datasheet figure against your application before ordering.
| Model | GFR600-25 AirTAC Filter Regulator G1 Low-Pressure 5 um |
|---|---|
| Series | GFR600 filter regulator |
| Port size | PT1" (G (BSPP) 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. |
| G | G (BSPP) 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 filtered, low-pressure regulated air to air-jet looms and spinning auxiliaries on a textile line, where the machine controls call for a low set pressure rather than full line pressure.
Supplying a low-pressure regulated air knife or blow-off header above a packaging conveyor, with the 5 um element protecting nozzles from water and particulate carryover.
Regulating low-pressure atomizing air to a spray-coating or humidification skid, where the manual-drain aluminium bowl is emptied during scheduled line maintenance.
The real choices on this family are the size and port step against required flow, the drain type (differential-pressure as standard, automatic or manual), the filter grade (40 um standard, 5 um with code W), the gauge (embedded square as standard with MPa, psi or bar scales, or an optional external round gauge), the thread (PT standard; G and NPT to order) and the bracket. This GFR600-25 is already fixed at size 600, G1 (1 in), 5 um grade, manual drain, square psi gauge, reverse/check valve fitted, and no bracket. Flow for the GFR series is published as curves, not a single rating, so send us your flow and set-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 GFR flow as curves rather than a single rated figure, so we do not quote a rated flow number. Send us your required flow and set pressure and we will read the size-600 curve and confirm suitability from the datasheet on request.
The manual drain means someone opens the bowl drain periodically, such as at scheduled maintenance, to eject collected water; it does not discharge automatically. The 5 um element (code W) is one grade finer than the 40 um standard element, so choose it where downstream valves or nozzles are sensitive to finer particles.
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.