The AirTAC GFR400-15G AirTAC Filter Regulator G1/2, 5 um, psi gauge 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 GFR400-15G is a genuine AirTAC filter regulator: it removes water and particulate from compressed air and sets downstream pressure in a single body. This size 400 unit has a G1/2 (BSPP) port, a 5 um filter element (the finer W grade, versus the 40 um standard), a differential-pressure drain that bleeds collected condensate automatically as flow passes through, and a round pressure gauge reading in psi. The standard regulator covers an adjustment range of 0.15-0.9 MPa (20-130 psi) with a maximum inlet pressure of 1.0 MPa (145 psi), and the polycarbonate bowl is rated for -5 to 70 C, non-freezing.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drain, 40 um or 5 um filtration, embedded square or external round gauges in MPa, psi or bar scales, and PT, G or NPT threads. Published flow data appears as curves rather than a single rating, so ask us and we will confirm the figures for your application on request.
| Model | GFR400-15G AirTAC Filter Regulator G1/2, 5 um, psi gauge |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (G (BSPP) 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, 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 0.15 - 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. |
| J | Supplied without bracket. |
| (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. |
| W | Filtering grade 5 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. |
| (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 clean, pressure-set air to pneumatic clamps, tool-change actuators and chip-blowing nozzles on a machining centre, with the 5 um element protecting fine control valves from water and swarf-carrying condensate.
Supplies filtered and regulated air to filler actuators, capping heads and carton-sealing cylinders on a packaging line, where the differential-pressure drain keeps condensate moving out during sustained production runs.
Regulates supply to pneumatic stops, lifters and clamp cylinders along an assembly conveyor, with the psi-reading round gauge letting maintenance set and verify line pressure at the drop.
Size 400 with a 1/2 inch port sits in the upper-middle of the GFR range; step up to size 600 or down to size 300 depending on the flow your line needs, and we will check the published curves against your demand before you order. This unit carries the 5 um W-grade element - choose it when downstream valves, cylinders or instruments need finer protection than the 40 um standard; the differential-pressure drain suits continuous-flow duty, while automatic or manual drain variants exist for other duty patterns. The round gauge here reads in psi; square embedded gauges and MPa or bar scales are also available. Thread is G (BSPP) on this code - PT is the standard offering and NPT is an order option - and this configuration omits the mounting bracket, so plan your panel or manifold fixing accordingly.
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 rather than a single rated figure, so we do not quote a number here. Tell us your operating pressure and air demand and we will confirm the flow data from the datasheet for this exact unit on request.
The W in the code GFR400-15JC2WG selects the 5 um filter grade instead of the 40 um standard, giving finer protection for downstream valves and cylinders. The blank drain position selects the differential-pressure drain, which bleeds condensate automatically as air flows through - no daily manual draining, though automatic (A) and manual (M) drain variants are available in the same series.
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.