The AirTAC GFR400-15 AirTAC Filter Regulator PT1/2, 40 um, psi 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 PT1/2" 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 GFR400-15 is a filter regulator: one body that removes water and particulate from compressed air and then regulates downstream pressure. This 400-size unit carries a PT1/2 (1/2 in) PT-threaded port, a 40 um standard filter element, a manual drain bowl in PC (polycarbonate), and an embedded square gauge reading in psi. The standard regulator covers 0.05-0.9 MPa (7-130 psi) with manual drain, and the maximum inlet pressure is 1.0 MPa (145 psi). A mounting bracket is included, and the operating temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family is published in 200, 300, 400 and 600 sizes with ports from 1/8 to 1 inch, a choice of manual, automatic or differential-pressure drains, an optional 5 um (W) element, gauge scales in MPa, psi or bar, and G or NPT thread options to order. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR400-15 AirTAC Filter Regulator PT1/2, 40 um, psi gauge |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (PT 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 | PC |
| Pressure gauge | Fitted — square, psi 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 0.05 - 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.
| GFR400 | G-series filter regulator, 400 body — sets the port range. |
|---|---|
| 15 | Port size PT1/2". This body offers 10 = PT3/8", 15 = PT1/2". |
| 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. |
| 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. |
| (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 | GFR400 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Feeds filtered, regulated air to the pneumatic cylinders that clamp, push and divert packs along a packaging conveyor, with the square psi gauge letting operators check set pressure at a glance.
Installed as the point-of-use filter regulator on an assembly-line air drop, cleaning water and particulate from the shop supply and holding a stable pressure to the line's air tools and fixtures.
Conditions the air feeding spray guns in a paint booth, removing moisture and particles that would ruin finish quality while the regulator holds the gun supply pressure the painter sets.
Start with the port and size step: this unit is 400 size with a PT1/2 (1/2 in) PT-threaded port; larger sizes carry larger ports and more flow, so step up if your line demand is high. Choose the drain to suit access: manual drain (this unit) needs someone to open it, automatic drains themselves, and differential-pressure drain is the default. The 40 um element is standard; specify the 5 um (W) option where finer filtration is needed. The embedded square gauge is standard and this one reads in psi; MPa or bar scales and an external round gauge are options. PT is the standard thread, with G (BSPP) and NPT available as order options, and a mounting bracket is included. Flow is published as curves, not a single rating, so ask us to confirm sizing against your application before ordering.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. 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 curves, not as a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Tell us your application and we will confirm the datasheet flow figures and check the sizing for you before you order.
The manual drain on this GFR400-15 means the bowl is emptied by hand, which suits positions that are checked regularly; automatic and differential-pressure drains are available if the unit is hard to reach. You can also order the 5 um (W) filter element instead of the standard 40 um, a gauge scale in MPa or bar instead of psi, G or NPT threads instead of PT, and the 600 size bowl in aluminium alloy.
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.