The AirTAC GFR600-25 AirTAC Filter Regulator 1 in PT, Low-Pressure is a genuine G-series filter regulator: water separation, 40 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT1" ports, a differential-pressure drain and regulates 0.15 - 0.9 MPa (20 - 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 is the size 600 unit, the largest in the GFR range, with a 1 in PT port, so it suits a plant main line or a high-flow drop feeding large air consumers. The low-pressure (L) type is intended for applications where the working pressure sits in the lower part of the regulator's span; the exact adjustment range for this low-pressure variant is not published in the standard tables, so ask us to confirm it against your setpoint. The 40 um standard filter element handles general-purpose air preparation, the differential-pressure drain bleeds accumulated condensate automatically as flow passes through, and the fitted square gauge reads in psi so operators can check and adjust the downstream setting at a glance. The aluminium alloy bowl on this size 600 unit gives added mechanical strength where a large polycarbonate bowl would be a concern.
This is a genuine AirTAC part. The GFR series spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, optional 5 um (W) filtration, manual or automatic drain variants, square or external round gauges with MPa, psi or bar scales, a reverse/check valve option, and G or NPT thread alternatives to the PT standard. Flow is published as curves rather than a single rated figure, so send us your application details and we will confirm the sizing and full datasheet figures on request.
| Model | GFR600-25 AirTAC Filter Regulator 1 in PT, Low-Pressure |
|---|---|
| Series | GFR600 filter regulator |
| Port size | PT1" (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 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 | Differential-pressure drain |
| Bowl material | Aluminium alloy |
| Pressure gauge | Fitted — square, 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". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 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. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT 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" · 40 µm |
|---|---|
| One size down | GFR400 |
| Add lubrication | GFC600-25 (two-unit set) |
Installed on a 1 in main drop in a factory air network, it filters line-scale water and rust from the compressed air and holds a steady low working pressure for the whole department served by that drop.
Feeding the cylinder and actuator manifold of a high-throughput packaging or palletising line, it delivers cleaned air at a stable reduced pressure so clamp, pusher and lift motions repeat consistently through the shift.
Mounted at the air inlet of a CNC or automated machining cell, it protects directional valves and cylinders from condensate and particles while the psi gauge lets maintenance verify the set pressure without extra tooling.
Start with the port and flow path: the 600 size with a 1 in PT connection is the right choice when the air demand at the point of use is too high for 1/2 in and smaller units. Because flow is published as curves rather than a single rating, ask us to check the curve against your required flow and acceptable pressure drop before ordering. Next, decide the drain: this unit uses the differential-pressure drain (the default), which discharges condensate automatically in service; a manual-drain variant (M) is available if you prefer controlled draining, and it changes the regulator adjustment span, so confirm which suits your maintenance routine. Filtration is the 40 um standard element; specify the W option for 5 um only if downstream equipment genuinely needs finer filtration, as it loads faster. The fitted square gauge reads in psi (scale 2); MPa and bar scales and an external round gauge are alternatives. Thread is PT as standard, with G (BSPP) and NPT available as order options, and the mounting bracket is included on this configuration.
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 characteristic curves, not as a single rated number, so we do not quote a figure that is not in the datasheet. Send us your line pressure, required downstream pressure and air consumption, and we will confirm the flow curve and sizing for this 1 in unit on request.
L marks the low-pressure type of the GFR regulator, intended for applications where the working pressure sits in the lower part of the adjustment span. The exact adjustment range for the low-pressure variant is not published in the standard tables, so tell us your target setpoint and we will confirm on request whether it falls inside this unit's range.
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.