The AirTAC GFR600C25MLF1WT 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 See datasheet 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 GFR600C25MLF1WT is an AirTAC GFR-series filter regulator: water and particulate filtration plus downstream pressure regulation in a single body. This size-600 unit is built around a 1 in NPT port for high-flow main air lines, carries the W-code 5 um filter element for finer particle capture than the standard 40 um grade, and uses a manual drain on the bowl, so condensate is emptied by opening the drain valve during routine checks. The L in the code marks the low-pressure regulator type, and the fitted embedded square gauge is scaled in MPa so the set pressure is always visible at the unit.
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, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um filtration, standard or low-pressure regulation, square or external round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Flow for this series is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR600C25MLF1WT AirTAC Filter Regulator NPT1 Low-Pressure |
|---|---|
| Series | GFR600 filter regulator |
| Port size | See datasheet (PT 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 | Fitted — factory standard, Factory standard 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. 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. |
|---|---|
| C2 | Port size See datasheet. 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. |
| (blank) | Pressure gauge fitted (blank). |
| (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. |
| (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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR400 |
| Add lubrication | GFC600-C2 (two-unit set) |
Installed at the 1 in drop from the plant ring main, it removes water and fine particles from the supply and holds a steady, low regulated pressure to the line's pneumatic valves and actuators, with the MPa gauge letting operators verify the setting at a glance.
Feeding a fixture or jig circuit that must run at a reduced pressure below the shop supply, the low-pressure regulator type sets the clamping force while the 5 um element protects the fixture's control valves from particulate carryover.
Mounted where the conveyor's air branch leaves the main header, it filters condensate and 5 um-grade particulates out of the supply and regulates pressure to the drive and diverter cylinders, with the manual drain emptied during scheduled line checks.
Start with the port step: this configuration is size 600 with a 1 in NPT connection, the largest step in the GFR range, so match it to the main line diameter and the air demand of the circuit it feeds. The 5 um element (code W) suits circuits that need finer particle control than the 40 um standard; the manual drain (code M) keeps the bowl simple but relies on scheduled draining, unlike the automatic or differential-pressure options. The low-pressure type (code L) is the right choice where the regulated circuit runs well below standard line pressures - its exact adjustment range is not published, so confirm it with us. The fitted square gauge reads in MPa; psi or bar scales and an external round gauge are orderable options, and PT is the standard thread with G and NPT as catalogue options - this unit is the NPT version. A mounting bracket is included.
Because flow is published as curves rather than a single rated figure, we cannot quote one number here. Send us your line size, upstream pressure and downstream demand, and we will confirm the sizing from the AirTAC datasheet before you order.
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 figure, so there is no one number we can honestly quote. Tell us your line size, upstream pressure and downstream air demand, and we will confirm the sizing against the datasheet curves for this 1 in NPT, size-600 unit before you order.
The M in the code selects the manual drain: condensate collected in the bowl is released by opening the drain valve during routine checks, instead of being expelled automatically as with the A (automatic) or differential-pressure options. The W code selects the 5 um filter element, a finer grade than the 40 um standard, for circuits that need tighter particle control.
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.