The AirTAC GFR400C15ALJC2WTK AirTAC Filter Regulator NPT 1/2 in 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 GFR400C15ALJC2WTK is a size 400 filter regulator: water and particulate filtration plus pressure regulation combined in a single body, with a 1/2 in NPT port. This configuration is the low-pressure type, fitted with a fine 5 um filter element (code W), an automatic drain that ejects collected condensate without manual attention, an external round gauge scaled in psi, and a built-in reverse/check valve that holds downstream pressure when the upstream supply is lost. It is ordered without a mounting bracket. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing. As a low-pressure type, its regulation range differs from the standard unit; the exact range for this variant is not published in the material we hold, and we will confirm it from the datasheet on request.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and with choices of drain type (differential-pressure, automatic or manual), filter grade (40 um standard or 5 um), gauge style and scale (embedded square or external round, in MPa, psi or bar), thread (PT standard, with G and NPT as order options), bracket and reverse/check valve. Flow is published by AirTAC as curves rather than a single rated figure, so we confirm sizing and datasheet figures on request before you order.
| Model | GFR400C15ALJC2WTK AirTAC Filter Regulator NPT 1/2 in |
|---|---|
| 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) |
A single GFR400 unit at the fixture inlet cleans the shop air of water and fine particles and holds a steady low regulated pressure to the clamp cylinders, with the check valve maintaining clamp holding if the main supply drops.
At the booth drop, the 5 um element protects the gun and regulator seat from particulates while the low-pressure type delivers the gentle, stable pressure spray work needs, and the automatic drain copes with condensate from long air runs.
Feeding the divert and stopper actuators on one conveyor section, the unit filters incoming compressed air, regulates it at low pressure for gentle product handling, and the psi gauge lets line staff verify setting at a glance.
Size 400 with a 1/2 in NPT port sits in the upper-middle of the GFR range; step up to size 600 or down to size 300 depending on the flow your line needs - because flow is published as curves rather than a single rating, ask us to check the curve against your application before ordering. This unit is the low-pressure type, so choose it where the regulated pressure you need sits below what a standard GFR is set up for; we will confirm the exact range from the datasheet. The 5 um element (code W) suits downstream equipment sensitive to finer particles; the 40 um standard element remains available on other variants if coarse filtration is enough. The automatic drain suits unattended or hard-to-reach installations; manual and differential-pressure drains are options on other variants. The round gauge is scaled in psi here, with MPa or bar scales and an embedded square gauge available as alternatives. NPT is the thread on this code; PT (standard) and G are order options, and the bracket has been omitted (code J) - add one if you want panel or surface mounting.
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 number, so we do not quote a figure here. Send us your application details - required flow, upstream pressure and regulated setpoint - and we will confirm the sizing against the datasheet curve on request before you order.
Both are read straight from the model code: A is the automatic drain, which ejects collected condensate on its own instead of waiting for a manual or differential-pressure drain action, and W is the 5 um filter grade, one step finer than the 40 um standard element. If your application can tolerate coarser filtration or you prefer a different drain style, other GFR400 variants cover those choices.
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.