The AirTAC GFR400C15ALJC1WT 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 GFR400C15ALJC1WT is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and holds a reduced, adjustable outlet pressure, both in one body. This size 400 unit is built with a 1/2 in NPT port, a 5 um filter element (code W, against the 40 um standard), an automatic drain that bleeds collected condensate without manual attention, and the low-pressure regulator type for circuits whose set pressure sits below the standard range. A round pressure gauge scaled in MPa is fitted, and no mounting bracket is included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, drain choices (differential-pressure, automatic or manual), 40 um or 5 um filtration, gauge styles and scales, and G/NPT thread options to order. Flow is published as curves rather than a single rating, so ask us to confirm the figures for your application - we provide the datasheet on request.
| Model | GFR400C15ALJC1WT 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) |
Conditioning the supply to a CNC machining centre's solenoid valves and pneumatic clamps: the 5 um element strips water and fine particulate before the valves, while the regulator holds the reduced pressure the clamp cylinders were set up for.
Feeding the pick-and-place cylinders and bag-seal actuators on a packaging line, where the automatic drain handles condensate on continuous runs and the low-pressure regulator suits circuits set well below full line pressure.
Preparing air at a paint-spray booth drop: filtered, regulated air to the spray gun, with the 5 um element catching fine contamination that would otherwise mar the finish.
Size steps from 200 through 600, so match the 1/2 in NPT port on this unit against your line's flow demand before ordering. Drain type is a real choice: automatic drains suit unattended duty, manual suits periodic checks, and differential-pressure is the catalogue default - this unit carries the automatic drain. Filter grade is 40 um standard or 5 um with code W; this configuration has the 5 um element for finer protection upstream of sensitive valves. Gauges come as an embedded square type or an external round type, scaled in MPa, psi or bar; this unit has a round MPa gauge. Thread is PT as standard with G and NPT as orderable options, and brackets are optional (omitted here). 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 rather than a single rated figure, so we do not quote a number. Tell us your application and working pressure and we will confirm the flow from the datasheet on request.
The L code marks the low-pressure regulator variant, intended for circuits whose set pressure sits below the standard type's range. The exact adjustment range for this variant is not published on the sheet we transcribe from, so ask us and we will confirm it from the datasheet.
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.