The AirTAC GFR600-25 NPT AirTAC Filter Regulator, 1 in, Manual Drain 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 AirTAC GFR600-25 is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 600 unit is specified with 1 in NPT ports, a manual drain for emptying the bowl, the standard 40 um filter element, and the low-pressure regulator type. A reverse/check valve is fitted, no pressure gauge is supplied, and no mounting bracket is included. The bowl on this size 600 unit is aluminium alloy.
This is a genuine AirTAC part. The GFR filter-regulator line spans sizes 200, 300, 400 and 600 with a choice of drain type, 40 um or 5 um filtration, gauge options, PT, G or NPT threads, and standard or low-pressure regulation. Flow is published as curves rather than a single rating, so we confirm the datasheet and sizing figures on request before you order.
| Model | GFR600-25 NPT AirTAC Filter Regulator, 1 in, Manual Drain |
|---|---|
| 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 | 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. 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. |
| 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 distribution drop feeding a production hall, the GFR600-25 filters water and scale out of the plant air and holds a steady low-pressure supply to the floor, with the manual drain emptied during shift checks.
Feeding cylinders and air jets along a packaging conveyor, the unit cleans the incoming air, regulates it to the level the conveyor controls were set for, and the check valve holds the line against backflow when upstream supply dips.
Where a spray, drying or blowing station runs at reduced pressure, the low-pressure type regulator gives finer control in the lower band while the 40 um element keeps the nozzles and valves upstream-clean.
Size 600 with 1 in ports is the largest step in the GFR range, so match it against the flow your line actually draws - published flow is in curves, not a single rating, so ask us to confirm sizing against your application before ordering. This unit carries the manual drain: you vent the bowl by hand, which suits attended installations; automatic or differential-pressure drains are available in the family if the unit will be unattended. Filtration is the standard 40 um element; the 5 um (W) grade is the option where finer particle removal is needed. The low-pressure regulator type is selected where the working range sits below the standard band - the exact range for this type is not published, so confirm it with us. Thread here is NPT; PT is the standard and G (BSPP) is also an order option. No gauge is fitted and no bracket is included with this code.
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, not as a single rated figure, so we do not quote a number here. Tell us your line conditions and we will confirm the flow and sizing from the datasheet on request before you order.
The M in the code selects the manual drain: collected water is emptied from the aluminium bowl by hand rather than automatically. It suits attended installations on a maintenance round; if the unit will run unattended, ask about the automatic or differential-pressure drain versions of the same size.
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.