The AirTAC GFR400-15 AirTAC Filter Regulator NPT1/2 5um 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 See datasheet 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 GFR400-15 is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single body. This configuration has 1/2 in NPT ports, a 5 um filter element, an automatic drain that ejects collected condensate without manual attention, an embedded square gauge reading in psi, and a built-in reverse (check) valve. It is the standard regulator type with an adjustment range of 0.15-0.9 MPa (20-130 psi), a maximum inlet pressure of 1.0 MPa (145 psi), and an operating temperature of -5 to 70 C (non-freezing).
This is a genuine AirTAC part from the GFR400 series. The GFR line spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options include manual or differential-pressure drains, a 40 um standard element, gauge scales in MPa, psi or bar, and G(BSPP) or NPT threads in place of the PT standard. We confirm flow and other datasheet figures on request, since flow is published as curves rather than a single rating.
| Model | GFR400-15 AirTAC Filter Regulator NPT1/2 5um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | See datasheet (PT 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 — factory standard, Factory standard 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. |
|---|---|
| C1 | Port size See datasheet. 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). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-C1 (two-unit set) |
Feeding clean, pressure-stabilised air to the tool-clamp and coolant-mist circuits of a machining centre, where chips and condensate in the shop air line would otherwise reach the spindle-area valves.
Conditioning the air that drives pick-and-place and case-sealing cylinders on a packaging conveyor, holding a steady setpoint so stroke timing stays repeatable through the shift.
Supplying filtered, regulated air to a panel of solenoid valves and positioners, with the 5 um element protecting small orifices and the psi gauge giving operators a local pressure readout.
Size and port set the capacity: this GFR400 unit carries a 1/2 in port, one step up in the 200/300/400/600 family, so match the size to your line's air demand. Drain type is a real choice: automatic (this unit) suits unattended duty, manual suits periodic checks, and differential-pressure draining responds to pressure drop. Filter grade is 5 um here (code W) against the 40 um standard; the gauge reads psi here, with MPa and bar scales available. Thread is NPT on this unit; PT is the standard and G(BSPP) is an order option. 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 GFR400 series as curves rather than a single rated figure, so there is no one number we can quote. Send us your line pressure, downstream demand and allowable pressure drop, and we will confirm the flow figures from the datasheet for your application before you order.
The A in this model code selects the automatic drain, which ejects collected condensate on its own - useful where the unit is mounted in a spot that is not checked daily. The same GFR400 body is also available with a manual drain or a differential-pressure drain, so you can pick the type that matches how the installation is serviced.
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.