The AirTAC GFR600-25 NPT AirTAC Filter Regulator, 1 in, Bar Gauge 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: one body that removes water and particulate from compressed air and holds downstream pressure steady. This 600-size unit is configured with a 1 in NPT port, a 40 um standard filtration element, a manual drain, an embedded square gauge scaled in bar, and a reverse (check) valve fitted. The manual drain means an operator opens the drain at the bottom of the bowl to expel collected condensate, which suits installations where someone is already at the machine on a routine basis. The aluminium alloy bowl on this size stands up to the demands of a 1 in main-air position, and the check valve holds downstream pressure if the upstream supply is interrupted.
This is a genuine AirTAC part. The GFR family runs in 200, 300, 400 and 600 sizes with ports from 1/8 in to 1 in, and with choices of drain type, 40 um or 5 um filtration, gauge scale, thread (PT standard; G and NPT as order options) and bracket. Flow is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR600-25 NPT AirTAC Filter Regulator, 1 in, Bar Gauge |
|---|---|
| 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, bar 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. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 3 | Gauge scale: bar. 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) |
Mounted at the 1 in header drop feeding a production hall, it cleans water and scale out of the main supply and gives every downstream branch one stable, adjustable pressure reference at the bar gauge.
Feeding the valve manifold of a carton-forming and sealing line, it keeps the air dry enough for the cylinders and holds set pressure steady so clamp-and-seal sequences repeat the same way shift after shift.
On a shop wall board serving impact tools, blow guns and test rigs, the manual drain suits a shop where staff drain the bowl as part of closing up, and the check valve keeps the board pressurised if the compressor unloads.
Start with the port and size step: this unit is 600 size with a 1 in NPT port, the largest step in the GFR range, so size up to it when your line's air demand sits near the top of what smaller ports can pass. Because flow is published as curves rather than a single rating, send us your flow requirement and we will confirm the right size against the datasheet before you order. On this configuration the drain is manual, so plan a routine walk-round to drain the bowl; automatic and differential-pressure drains are available in the family if nobody is regularly at the unit. Filtration is the 40 um standard element; the 5 um (W) grade is the choice if downstream valves or instruments need finer protection. The gauge here is the embedded square type scaled in bar, with MPa and psi scales and an external round gauge available as options. The T in the code gives an NPT thread; PT is the catalogue standard and G (BSPP) is also orderable. A bracket is included, and the fitted check valve (K) holds downstream pressure on air failure.
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 GFR flow as curves, not as a single rated number, so we do not quote a figure here. Send us your required flow and working pressure and we will confirm against the datasheet curve whether this 600-size, 1 in NPT unit is the right step, or whether a smaller size would do the job, before you order.
M in the code is the manual drain: an operator opens the drain on the aluminium bowl to expel collected condensate, which suits posts that get regular attention. The K adds a reverse (check) valve, so downstream pressure is held if the upstream supply drops. Automatic and differential-pressure drains are available in the family if the unit will sit unattended.
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.