The AirTAC GFR400-15 AirTAC Filter Regulator NPT1/2 with 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 automatic 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 GFR400-15 is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 400 unit is specified for 1/2 inch NPT ports, carries the standard 40 um filter element, and is fitted with an automatic drain that expels collected condensate without manual attention. The embedded square gauge reads in MPa, and the standard regulator covers an adjustment range of 0.15-0.9 MPa (20-130 psi). Maximum inlet pressure is 1.0 MPa (145 psi), with an operating temperature range of -5 to 70 C (non-freezing). The polycarbonate bowl suits the 200/300/400 sizes; only the 600 size uses an aluminium alloy bowl.
This is a genuine AirTAC part. The GFR series is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, and with choices of thread (PT standard, G and NPT as order options), drain type (differential-pressure, automatic or manual), filter grade (40 um standard, 5 um optional) and gauge scale. Flow is published as curves rather than a single rated figure, so we confirm flow and datasheet figures on request before you order.
| Model | GFR400-15 AirTAC Filter Regulator NPT1/2 with Gauge |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (NPT 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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, 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". |
| A | Drain: Automatic 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). |
| F | Gauge shape: Square. C is round, F is square. |
| 1 | Gauge scale: MPa. 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. |
| (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) |
Feeding filtered, regulated air to the actuated cylinders and grippers on a carton-forming and sealing line, with the automatic drain keeping condensate off the downstream valves between shift checks.
Conditioning the shop-air feed into a machining centre so the tool-change cylinder and pneumatic clamps receive clean air held at a set pressure, read on the square MPa gauge.
Supplying the air cylinders that raise diverters and stop gates on a distribution conveyor, with regulated pressure protecting the actuators and the 40 um element blocking pipe scale and rust.
Size and port: the GFR series steps through sizes 200, 300, 400 and 600, each with larger ports and higher flow capacity - match the size to your line's flow demand, here 1/2 inch NPT. Drain type: automatic drain suits unattended duty; manual drain suits supervised installations; the differential-pressure type is the default. Filter grade: 40 um is the standard element; specify 5 um (code W) where finer particulate removal is needed. Gauge: this unit has the embedded square gauge on an MPa scale; psi and bar scales and an external round gauge are orderable. Thread: PT is the standard; G (BSPP) and NPT are catalogue options to order. Bracket: this configuration is ordered without a mounting bracket (code J); a bracket is available. 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 number here. Tell us your application and we will confirm the flow and datasheet figures for this unit on request before you order.
The A in the code GFR40015AJF1T specifies an automatic drain, which expels collected condensate from the bowl without operator attention - useful for unattended or hard-to-reach installations. A manual drain (code M) is the choice where an operator checks the bowl routinely, and the differential-pressure type is the catalogue default.
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.