The AirTAC GFR600-25T AirTAC Filter Regulator NPT1 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 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 GFR600-25T is an AirTAC GFR-series filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This size-600 unit carries a 1 in NPT port, a 40 um standard filter element, and a manual drain, so condensate is released by opening the drain valve rather than automatically. The aluminium alloy bowl suits the larger 600 frame, a round pressure gauge with MPa scale is fitted for direct reading of the outlet setting, and the low-pressure (L) type regulator is intended for applications set at lower outlet pressures. Maximum working pressure is 1.0 MPa (145 psi) and the operating 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 port sizes from 1/8 in to 1 in, and choices of thread (PT standard, G and NPT as options), drain type (differential-pressure, automatic or manual), filter grade (40 um standard, 5 um with code W), gauge style and scale, and low-pressure or standard regulation. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing figures for your application on request.
| Model | GFR600-25T AirTAC Filter Regulator NPT1 Low-Pressure |
|---|---|
| Series | GFR600 filter regulator |
| Port size | PT1" (NPT thread) |
| Filtering grade | 40 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, MPa 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. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 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" · 40 µm |
|---|---|
| One size down | GFR400 |
| Add lubrication | GFC600-25 (two-unit set) |
Feeds filtered, regulated air to the sealing and clamp circuits of a packaging machine that runs at a low set pressure, with the round MPa gauge letting operators read the setting at a glance and the manual drain cleared during shift checks.
Sits upstream of air-operated valves and actuators on a process skid, removing water and particulate before they reach seals and seats while holding a steady low outlet pressure for consistent valve movement.
Installed at the drop feeding conveyor take-up and gate cylinders, where the 1 in port serves a high-capacity branch line, the 40 um element keeps debris out of the cylinders, and the manual drain is opened during scheduled maintenance.
Step up through sizes 200, 300, 400 and 600 as required flow and port size grow; the 600 frame here takes a full 1 in NPT connection. With a bowl in the circuit, choose the drain to match maintenance habits: manual (as here) needs someone to open the drain valve, automatic drains condensate without attention, and the differential-pressure default drains on a pressure drop. The 40 um element is the standard grade; specify code W for the 5 um option where finer particulate removal matters. Gauge style and scale (square embedded as standard, round external optional, MPa/psi/bar scales) are selectable, and PT is the standard thread with G and NPT as order options - this unit is the NPT version. A mounting bracket is included.
One honest routing note: this is the low-pressure (L) type regulator and its exact adjustment range is not published in the material we hold, and flow for the whole family is published as curves rather than a single rating. Ask us to confirm both the set range and the flow curves against your application before ordering.
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 figure, so we do not quote a number here. Tell us your application and we will confirm the flow curves and check the sizing against your required flow before you order.
The L in the code marks the low-pressure regulator type, intended for applications set at lower outlet pressures than the standard version. Its exact adjustment range is not published in the material we hold, so ask us to confirm the set range for your application. Everything else decodes normally: 1 in NPT port, manual drain, 40 um element, aluminium bowl, round MPa gauge fitted, bracket included, and a maximum inlet pressure of 1.0 MPa (145 psi).
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.