The AirTAC GFR400C15AF1WT AirTAC Filter Regulator NPT1/2 5 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 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 GFR400C15AF1WT is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and holds downstream pressure in a single body. This size 400 unit is built with a 1/2 in NPT port, a 5 um filter element (the finer of the two published grades), an automatic drain that ejects collected condensate without manual attention, and an embedded square pressure gauge scaled in MPa. Maximum inlet pressure is 1.0 MPa (145 psi) and the standard regulator covers 0.15-0.9 MPa (20-130 psi). Operating temperature is -5 to 70 C, non-freezing. The polycarbonate bowl is supplied with a mounting bracket; no reverse/check valve is fitted.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and can be ordered with manual or differential-pressure drains, the 40 um standard element, alternative gauge scales (psi or bar), G (BSPP) or NPT threads in place of the PT standard, and an optional external round gauge. AirTAC publishes flow as curves rather than a single rated figure, so ask us to confirm flow and datasheet figures for your application before ordering.
| Model | GFR400C15AF1WT AirTAC Filter Regulator NPT1/2 5 um |
|---|---|
| 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) |
Point-of-use filtered and regulated air for tool changers, clamps and air-operated gauges on a machining centre, where the 5 um element and automatic drain help keep water and debris out of delicate machine valves.
Supply regulated air to cylinder-driven carton sealers, case erectors and wrap arms along a packaging line, where a steady downstream setting keeps actuator behaviour consistent through the shift.
Feed spray guns and atomising air lines in a paint or coating booth, using the 5 um grade and automatic drain to limit water carry-over between the drop line and the gun.
Size and port step up together: 200, 300, 400 and 600 cover 1/8 in to 1 in ports, so pick the size whose flow curve meets your demand - we can check the curve against your air consumption on request. Choose the drain: differential-pressure (default), automatic (this unit) or manual; note the regulation range differs by drain type, 0.15-0.9 MPa (20-130 psi) with automatic or differential-pressure drain versus 0.05-0.9 MPa (7-130 psi) with manual. Filter grade is 40 um standard or 5 um (this unit's W code). Gauges: the embedded square gauge is standard with MPa, psi or bar scales, or an external round gauge can be ordered. Threads: PT is the standard; G (BSPP) and NPT (this unit) are catalogue options. A bracket is included on this unit. Because flow is published as curves, not a single rating, 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 GFR flow as curves rather than a single rated figure, so we do not quote one number. Send us your working pressure and air consumption and we will confirm the flow from the datasheet for this 1/2 in NPT, size 400 unit before you order.
The automatic drain (code A) ejects collected condensate on its own, so the unit suits drop points that are not checked daily. With an automatic or differential-pressure drain the regulator covers 0.15-0.9 MPa (20-130 psi); a manual-drain version covers 0.05-0.9 MPa (7-130 psi). Maximum inlet pressure is 1.0 MPa (145 psi) either way.
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.