The AirTAC GFR400-15C2GK AirTAC Filter Regulator G1/2, 40 um 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 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 GFR400-15C2GK is a size 400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration has a G1/2 (BSPP) port, a 40 um standard filter element, and a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the element is high enough. A round pressure gauge on a psi scale is fitted so the set pressure is visible, and a reverse/check valve is built in to hold downstream pressure if the upstream supply drops. The polycarbonate bowl suits this size, and the mounting bracket is included.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, optional 5 um elements, automatic or manual drains, alternative gauge scales, and G or NPT thread variants. Flow figures for the GFR400 are published as curves rather than a single rating, so ask us and we will confirm the datasheet figures against your application before you order.
| Model | GFR400-15C2GK AirTAC Filter Regulator G1/2, 40 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (G (BSPP) thread) |
| Filtering grade | 40 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, 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 0.15 - 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. |
| 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. |
| G | G (BSPP) 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 | GFR400 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Feeds clean, pressure-controlled air to the pneumatic clamps, tool-change cylinders and chip-clearing blasts on a CNC machining centre, with the psi gauge letting setters verify set pressure at a glance.
Conditions the air feeding the cylinder-driven sealing jaws and box pushers on a packaging line, where the 40 um element keeps scale and pipe debris out of the valve spools.
Supplies filtered, regulated air to bench-top test rigs and pilot-plant instrumentation, with the check valve holding the set pressure steady if the shop compressor unloads upstream.
Start with the port and size step: the 400 size with a G1/2 port sits in the upper-middle of the GFR range, so step up to size 600 or down to 300 depending on the air demand of the line it feeds. Choose the drain to match access: this unit's differential-pressure drain needs no attention during operation, but an automatic (code A) or manual (code M) drain can be ordered instead. The 40 um element is standard; specify 5 um (code W) if downstream equipment needs finer filtration. Gauge scale is psi here, with MPa or bar available, and the round external gauge can be swapped for the embedded square style. Thread is G (BSPP); PT is the standard thread and NPT is an order option. A bracket is included with this code.
One honest note on sizing: filter-regulator flow is published as curves, not a single rated figure, so send us your application's air demand and we will confirm the correct size from the datasheet before you order.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR400 as curves rather than a single rated figure, so there is no one l/min or SCFM number we can quote honestly. Tell us your application's air demand and we will confirm the datasheet flow figures against it before you order.
This unit's differential-pressure drain discharges collected condensate automatically when the pressure drop across the 40 um element builds high enough, so it needs no day-to-day attention. If your usage pattern suits it better, the same size can be ordered with an automatic drain (code A) or a manual drain (code M).
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.