The AirTAC GFR400C10LJF2WK AirTAC Filter Regulator 3/8 in PT, 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 GFR400C10LJF2WK is an AirTAC GFR400 filter regulator: one body that removes water and particulate from compressed air and holds a reduced, regulated pressure downstream. This unit is built on the 400 size with a 3/8 in PT port, and its code specifies the W-coded 5 um filter element instead of the standard 40 um grade, a differential-pressure drain, the low-pressure regulator type, a built-in reverse/check valve (K), and the embedded square gauge scaled in psi. No mounting bracket is fitted (J code), so allow for your own fixing if the unit is to be panel or wall mounted. Maximum inlet pressure is 1.0 MPa (145 psi), the working temperature range is -5 to 70 C (non-freezing), and the 400-size bowl is polycarbonate (PC).
It is a genuine AirTAC part. The GFR family spans the 200, 300, 400 and 600 sizes with ports from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um filtration, gauge scales in MPa, psi or bar, and PT, G or NPT threads. AirTAC publishes flow for this series as curves rather than a single rated figure, so ask us to confirm the flow and datasheet figures for your application before ordering.
| Model | GFR400C10LJF2WK AirTAC Filter Regulator 3/8 in PT, 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) |
On a spray booth or coating line, shop air first passes the 5 um element to strip water and fine particles, then the low-pressure regulator trims the supply down to the gentle setting the atomising equipment needs, with the check valve helping hold that setting if upstream pressure dips.
Fixture and clamp cylinders on a CNC machining cell get clean, dry air at a steady reduced pressure from this unit; the built-in reverse/check valve helps hold the clamp position if the main supply drops, and the square psi gauge gives the setter a local reading.
Feeding pick-and-place and sealing cylinders on a packaging line, this filter regulator removes condensate and grit from the shop air and regulates the branch pressure at the machine, with the differential-pressure drain bleeding collected water away as air flows through.
Size and port step up with air demand: this is the 400 size with a 3/8 in PT port, sitting above the 200 and 300 sizes and below the 600 size for larger supplies. Because AirTAC publishes flow as curves rather than one rated number, send us your air demand and operating pressure and we will confirm the right size against the datasheet before you order.
Other decodable choices on this family: drain type (differential-pressure as here, automatic A, or manual M), filter grade (40 um standard, 5 um W as specified here), gauge scale (this unit reads psi; MPa and bar scales are available), thread (PT is the standard; G and NPT are order options), and bracket (this J-coded unit is supplied without one). The low-pressure regulator type and the K-coded reverse/check valve are built into this code; note that the exact adjustment range of the low-pressure type is not published in the materials we hold, so we confirm it on request.
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 G series as curves, not as a single rated figure, so we do not quote a number here. Tell us your air demand and operating pressure and we will confirm the flow from the datasheet for this 400-size, 3/8 in PT unit before you order.
The W code fits a 5 um element instead of the standard 40 um grade, for finer particulate capture ahead of sensitive valves, cylinders and instruments. Both grades are catalogue options on the GFR family; this code specifies the 5 um element, together with a differential-pressure drain that bleeds collected condensate as flow passes through the bowl.
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.