The AirTAC GFR400C10LC2WTK AirTAC Filter Regulator NPT3/8 Low-Pressure 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 GFR400C10LC2WTK is an AirTAC GFR400 filter regulator: filtration and pressure regulation combined in one body. It removes water and particulate from compressed air through a 5 um element (the fine grade, in place of the 40 um standard) and regulates downstream pressure as a low-pressure type, so it suits circuits that run below ordinary regulator settings. This configuration is size 400 with a 3/8 in NPT thread, a differential-pressure drain that bleeds collected condensate automatically as flow passes through, a round pressure gauge on a psi scale, a fitted reverse (check) valve, and the mounting bracket included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. The polycarbonate bowl is standard at this size.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, and with choices of drain type, filter grade, gauge style and scale, thread (PT standard; G and NPT as order options), bracket and reverse valve. Flow is published as curves rather than a single rating, so ask us and we will confirm the flow and datasheet figures for this exact model against your application.
| Model | GFR400C10LC2WTK AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| 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) |
Filter and hold a steady, low setpoint to the clamp cylinders on a machining fixture, with 5 um air protecting the directional valve and the psi gauge giving the operator a direct read of clamp circuit pressure.
Condition the supply to baggers, sealers and small actuators that run at reduced pressure, where the low-pressure regulator type and fine 5 um filtration keep sensitive components working cleanly.
Feed test rigs and pneumatic instruments that need particulate-free air at a gentle, stable pressure, with the check valve helping hold the downstream circuit and the psi gauge supporting repeatable setups.
Size 400 with a 3/8 in port sits in the middle of the GFR range; step up to 600 or down to 300/200 depending on the flow your line needs, and confirm the match against the published flow curves before ordering. The 5 um element (code W) is the right choice where downstream valves, cylinders or instruments need finer filtration than the 40 um standard. The differential-pressure drain handles condensate automatically during flow; if your usage is intermittent, ask about automatic or manual drain variants. This unit is the low-pressure type, so its regulation range differs from the standard GFR - confirm the exact range with us for your setpoint. The round gauge reads in psi; square gauges and MPa or bar scales are also available. Thread here is NPT (PT is the standard thread; G/BSPP is the other option), and the bracket is included. Because flow is published as curves rather than a single rating, send us your application details and we will confirm sizing before you order.
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 filter-regulator flow as curves rather than a single rated figure, so there is no one l/min or SCFM number we can quote honestly. Tell us your inlet pressure, setpoint and expected consumption, and we will confirm the flow from the datasheet curves for this exact model before you order.
The L in the model code marks the low-pressure version of the GFR400. It regulates circuits that run below the range of the standard type, which is why the standard 0.05-0.9 MPa range is not quoted here; the exact range for the low-pressure type is not published in the material we hold, so confirm your setpoint with us and we will verify it from the datasheet. Everything else decodes normally: 5 um filtration, differential-pressure drain, round psi gauge, NPT3/8 thread, reverse valve fitted and bracket included.
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.