The AirTAC GFR400C15ALJF2WK AirTAC Filter Regulator PT1/2, 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 AirTAC GFR400C15ALJF2WK is a size 400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is built for a 1/2 inch PT port, carries the fine 5 um filter element (code W) instead of the standard 40 um, and drains condensate automatically, so the bowl does not need manual bleeding during a shift. The regulator is the low-pressure type, an embedded square gauge with a psi scale is fitted so operators can read set pressure at the unit, and a reverse/check valve is included to hold downstream pressure if the supply drops. No mounting bracket is supplied with this code.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um filtration, and gauge or no-gauge variants. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR400C15ALJF2WK AirTAC Filter Regulator PT1/2, 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) |
Filtered, regulated air at a stable low set pressure for a small press or clinching head that stamps carton closures, with the 5 um element protecting the valve spools and the check valve holding the circuit if supply dips.
A paint or coating booth drop where oil-free-of-water, finely filtered air matters: the 5 um element strips fine condensate carryover and particulate ahead of the gun while the regulator holds the atomising pressure the operator sets on the psi gauge.
A machine-tool clamping circuit that must not lose pressure mid-cycle: filtered air for the directional valves, low-pressure regulation matched to the clamp rating, and the built-in check valve keeping the clamp held during a supply interruption.
Start with the port step: this unit is the size 400 body with a 1/2 inch PT thread, the step to take when your line size or expected air demand sits above the 3/8 inch size-300 units - match the size to required flow, which we can confirm against the published curves before you order. The 5 um element (code W) suits points of use that see finer contamination than the 40 um standard element handles; if the application only needs bulk water and chip removal, the standard grade is the lighter choice. The automatic drain suits unattended or hard-to-reach installations; manual and differential-pressure drains are available on other codes. The fitted square gauge reads in psi; MPa and bar scales, an external round gauge, or a no-gauge build are alternatives. Thread is PT as standard, with G (BSPP) and NPT available as order options, and a mounting bracket can be added on codes that carry one. Note this is the low-pressure regulator type; its adjustment range is not published in the material we hold, so confirm the set-pressure window with us 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 characteristic curves, not as a single rated number, so there is no one figure we can honestly quote. Tell us your line pressure and the air demand of the equipment downstream, and we will confirm the sizing from the datasheet curves on request before you order.
The W in the code selects the optional 5 um filter element instead of the 40 um standard, for points of use that need finer particulate and water removal. The A selects the automatic drain, which ejects collected condensate by itself instead of relying on the differential-pressure drain of the default build - useful where the unit is mounted out of easy reach. Both are decodable choices; the 40 um element and other drain types are available on sibling codes.
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.