
The AirTAC AirTAC GFR400-15 Filter Regulator (GFR40015C1W) is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT1/2" 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 AirTAC GFR400 series combines filtration and regulation in one body. This GFR40015C1W is the size 400 unit with a PT1/2 (1/2 inch) port, the fine 5 um filter element (the W option, instead of the standard 40 um), a differential-pressure drain bowl and an external round gauge scaled in MPa - a configuration suited to air that feeds more sensitive pneumatics.
It is a genuine AirTAC part for compressed air only, rated to 1.0 MPa (145 psi) inlet, with a 0.15-0.9 MPa (20-130 psi) adjustment range in this differential-drain configuration and a -5 to 70 C (non-freezing) temperature range. The size 400 bowl is polycarbonate. Sizes 200 to 600, drain types, threads and gauge options are available across the series. Flow is published as curves, not a single rating, so we confirm figures against your application on request.
| Model | AirTAC GFR400-15 Filter Regulator (GFR40015C1W) |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (PT thread) |
| Filtering grade | 5 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 | PC |
| Pressure gauge | Fitted — round, MPa 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.
| 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". |
| (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). |
| C | Gauge shape: Round. C is round, F is square. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 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" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Feeds filtered, regulated air to pneumatic samplers and valve actuation on laboratory and pilot-plant analysers, where the 5 um element guards fine pilot circuits.
Prepares the air feeding vacuum ejectors and gripper cylinders on robotic pick-and-place cells, with fine filtration protecting the small pilot ports of the valve bank.
Supplies the regulated, filtered air to a pneumatic test bench, letting the technician set and read test pressure at the gauge while the 5 um element keeps debris out of reference circuits.
The W suffix is the reason to pick this code: it upgrades filtration from the 40 um standard to 5 um, the finer of the two catalogue grades, for circuits feeding precision valves or instruments. Otherwise the configuration is the size 400 standard: PT1/2 port, differential-pressure drain (manual M and automatic A are options), round MPa gauge and included bracket. Choose size 400/1/2 inch for the middle of the G range, or step to 600 or 300 for larger or lighter lines. Since flow is given as curves rather than a rated number, ask us to confirm the size 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 does not publish a single rated flow for this series - flow is given as performance curves, and the 5 um element sits on those curves like any other grade. We will not estimate a number, but we can confirm the correct size from the datasheet against your application on request.
Pick W when the downstream equipment has fine clearances or pilot ports that the standard 40 um grade would not protect well enough - precision valve banks, instruments and test circuits. For general cylinder and valve supply the 40 um standard is the usual choice, and both grades are catalogue options on the same GFR400 body.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business 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.