The AirTAC GFR600-25N AirTAC Filter Regulator 1 in NPT 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 GFR600-25N is a size-600 filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is supplied in the standard 40 um filtration grade with a differential-pressure drain, a standard regulator with a 0.15-0.9 MPa (20-130 psi) adjustment range, and a reverse/check valve fitted. The 1 in NPT port suits high-flow supply lines, and at size 600 the drain bowl is aluminium alloy. No gauge is fitted on this variant.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with a choice of ports, PT/G/NPT threads, drain types, 40 um or 5 um filtration, gauge options and a reverse-valve option. Flow figures are published as curves rather than a single rating, so we confirm the datasheet and sizing figures on request.
| Model | GFR600-25N AirTAC Filter Regulator 1 in NPT |
|---|---|
| Series | GFR600 filter regulator |
| Port size | PT1" (NPT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 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 | Differential-pressure drain |
| Bowl material | Aluminium alloy |
| Pressure gauge | Not fitted |
| 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 0.15 - 0.9 MPa (20 - 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". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| N | No pressure gauge (N). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 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. |
| 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" · 40 µm |
|---|---|
| One size down | GFR400 |
| Add lubrication | GFC600-25 (two-unit set) |
Installed on a 1 in compressed-air distribution main serving a production hall, cleaning up the supply and holding a set downstream pressure for the whole line.
Feeding filtered, regulated air to pneumatic cylinders and diverters on a packaging or palletising conveyor, with the check valve holding the setting against backflow.
Mounted ahead of valve-and-cylinder circuits on a CNC or automated machine cell, protecting the downstream components from water and scale at the point of use.
Step up through sizes 200, 300, 400 and 600 to match the port and the flow your line needs; this size-600 unit with a 1 in NPT port sits at the top of the range. Choose the drain type - differential-pressure (this unit), automatic, or manual - noting the regulation range differs by drain type. Pick 40 um standard or 5 um (code W) filtration, decide on a gauge and its scale, and select PT (standard), G or NPT thread. A bracket is included; the reverse/check valve on this unit prevents downstream backflow through the regulator.
Flow for this family is published as curves, not a single rated figure, so ask us to confirm sizing against your application and the full datasheet before ordering.
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 rather than a single rated figure, so we do not quote one number. Tell us your line pressure and demand and we will confirm the sizing from the datasheet on request.
The K in GFR60025NTK means a reverse/check valve is fitted, which blocks backflow through the regulator. The N means no gauge is supplied; a gauge is available as an option on the GFR family if you want a local pressure indication.
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.