The AirTAC GFR400C15ALJF2WT AirTAC Filter Regulator NPT1/2 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 GFR400C15ALJF2WT is a filter regulator: one body that removes water and particulate from compressed air and then regulates the downstream pressure. This size 400 unit is threaded NPT1/2 (1/2 in), carries a 5 um filter element (the W grade, against the 40 um standard) and an automatic drain that expels collected condensate without manual attention. The regulator is the low-pressure type, an embedded square gauge with a psi scale is fitted, and no mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi), the working temperature range is -5 to 70 C (non-freezing), and the bowl on this 400 size is polycarbonate.
This is a genuine AirTAC part from the G-series air-treatment line, which spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in. Across the GFR family you can order manual or differential-pressure drains, 40 um or 5 um elements, gauges scaled in MPa, psi or bar, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | GFR400C15ALJF2WT AirTAC Filter Regulator NPT1/2 |
|---|---|
| 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) |
Supplying filtered, low-pressure regulated air to the clamping circuits of a CNC machining cell, where the 5 um element protects directional valves and the automatic drain keeps condensate out of the fixture line.
Feeding the pneumatic cylinders and product diverters on a packaging conveyor, where the regulator holds a steady reduced pressure for gentle handling and the auto drain suits continuously running equipment.
Providing clean, reduced-pressure air to a laboratory test rig, where the 5 um grade and the psi-scaled square gauge let technicians set and read the supply pressure directly at the bench.
The real choices in this family are decodable straight from the code. Size (200/300/400/600) sets the port and the flow capacity, so step up where demand is high - this unit is the 400 size with a 1/2 in port. Drain type: differential-pressure (default), automatic (this unit) or manual. Filter grade: 40 um standard or 5 um (W) for finer protection - this unit is 5 um. Gauge: the embedded square gauge is standard with MPa, psi or bar scales (this unit reads psi) and an external round gauge is optional. Thread: PT is the standard, with G and NPT as order options (this unit is NPT). Bracket: included by default, omitted with J - this unit has no bracket. Because flow is published as curves and not as a single rating, send us your flow and pressure requirements and we will confirm sizing against the datasheet before you order.
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 GFR400 flow as curves rather than a single rated number, so we do not quote a figure here. Send us your required flow and working pressure and we will confirm sizing from the datasheet before you order.
The automatic drain (code A) expels collected condensate on its own, which suits unmanned or continuously running installations. The family also offers manual drainage (code M) and the differential-pressure drain that is the default; all operate within the -5 to 70 C non-freezing range.
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.