The AirTAC GFR600-25T AirTAC Filter Regulator NPT 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 GFR600-25T is a filter regulator: one body that removes water and particulate from compressed air and holds downstream pressure at your setpoint. This 600-size unit is built around a 1 in NPT port, with the standard 40 um filter element, a manual drain on the bowl, and a standard-range regulator adjustable from 0.05 to 0.9 MPa (7-130 psi). The embedded square gauge reads in psi so the setting is visible at the wall, and a reverse (check) valve is fitted to hold downstream pressure if the supply drops. Because this is the 600 size, the bowl is aluminium alloy, and the unit is supplied without a mounting bracket.
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 each size can be ordered with a different drain type, a 5 um element (code W), a different gauge scale (MPa, psi or bar), and G (BSPP), NPT or PT threads. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR600-25T AirTAC Filter Regulator NPT 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 | 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 | Manual drain |
| Bowl material | Aluminium alloy |
| Pressure gauge | Fitted — square, psi scale |
| 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 0.05 - 0.9 MPa (7 - 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". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| (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. |
| 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 at the 1 in header drop feeding a CNC machining cell, it strips water and scale from the plant supply and holds a steady regulated pressure to the cell's valves and actuators, with the check valve holding the circuit if the header is shut off.
Mounted on the air drop serving a packaging line's cylinder-driven case packers and conveyors, it keeps line pressure constant through shift-long cycling while the 40 um element stops pipe scale reaching the directional valves.
Used ahead of a bank of quarter-turn pneumatic actuators on a process line, it filters the supply and sets the actuator pressure precisely, with the psi gauge letting technicians verify the setpoint during maintenance rounds.
Start with the port step: this is the 600 size with a 1 in NPT connection, the largest in the GFR range, so match it to your main air line and the flow your system needs. Choose the drain to suit access: this unit has a manual drain (code M), which suits installations someone visits regularly; automatic or differential-pressure drains are available on other variants if the bowl is hard to reach. The 40 um element is the standard grade and suits general plant air; order the W variant for 5 um where finer pre-filtration matters. The fitted square gauge reads psi; MPa or bar scales and an external round gauge are options. Threads come as PT (standard), G (BSPP) or NPT - this unit is the NPT version. A bracket can be added on variants that carry code J's opposite; this one is the no-bracket build. Flow for the series is published as curves, not a single rating, so ask us to confirm sizing against your application 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 there is no one number we can honestly quote. Send us your line pressure and the flow your application needs, and we will confirm the datasheet curve and check the sizing for you before you order.
The M in the code means the bowl drain is operated by hand: someone opens it periodically to discharge collected water. That suits installations that are visited routinely. If the unit will sit in an inaccessible spot, ask us about the automatic or differential-pressure drain variants of the same 600-size filter regulator.
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.