The AirTAC GFR400C10MLJF1WTK AirTAC Filter Regulator NPT3/8 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 GFR400C10MLJF1WTK is a size 400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration carries a 5 um filter element (code W) for finer filtration than the standard 40 um grade, a manual drain on the bowl, and a low-pressure regulator type (code L) for circuits that run below standard line pressure. The embedded square gauge (MPa scale) shows the regulated outlet pressure, a reverse/check valve is fitted, and the unit is supplied without a mounting bracket. Port is NPT 3/8 inch.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with a choice of ports, drain types (differential-pressure, automatic or manual), filter grades (40 um standard, 5 um optional), gauge styles and scales, and PT, G or NPT threads. Because flow is published as curves rather than a single rating, we confirm flow and other datasheet figures for your application on request.
| Model | GFR400C10MLJF1WTK AirTAC Filter Regulator NPT3/8 |
|---|---|
| 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 machining or assembly fixture that clamps with air actuators running below standard shop pressure, this low-pressure type filter regulator cleans the supply and holds a reduced, stable setting at the fixture, with the MPa gauge giving the operator a direct pressure readout.
A paint or coating line where atomizing and conveying air must be both clean and gently regulated: the 5 um element strips finer particulate and water carryover than the standard grade, while the manual drain lets an operator bleed the bowl at each shift start.
On a cartoning or wrapping machine with many small cylinders and air bearings fed from a 3/8 inch drop, this unit filters and regulates the whole branch in one body, and the fitted reverse/check valve helps hold the downstream setting when upstream supply dips.
Size 400 with a 3/8 inch NPT port sits in the upper-middle of the GFR range; step up to size 600 or down to 300/200 depending on the flow your circuit needs - ask us to check the flow curve against your application before ordering. This unit is already specified with the finer 5 um element (W), manual drain (M) and low-pressure regulator type (L); the standard alternatives are a 40 um element, differential-pressure or automatic drain, and the standard regulator type. The exact regulation range of the low-pressure type is not published in our sheet, so confirm the setting range with us if your setpoint is critical. Other decodable choices include gauge style and scale (the fitted square gauge reads MPa; psi or bar scales and an external round gauge are options), thread family (PT is the standard; G and NPT are catalogue options - this unit is NPT), and bracket (J means none is included; order a bracket 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 figure, so we do not quote a l/min, m3/h or SCFM number. Send us your application details and we will confirm the flow from the datasheet curve for this size 400, 3/8 inch port unit before you order.
The M in the code means the bowl is drained by hand: an operator opens the drain at intervals to remove collected water. If the unit sits where nobody drains it regularly, the automatic drain option (code A) or the default differential-pressure drain is the better choice; if you prefer the simplest, lowest-maintenance-intervention-free option for a supervised station, manual is fine. Note that with a manual drain the regulator adjustment range differs from the automatic/differential versions, so confirm the exact setting range for this low-pressure type with us.
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.