The AirTAC GFR400C10MLJC1WTK AirTAC Filter Regulator 3/8 NPT 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 GFR400C10MLJC1WTK is an AirTAC GFR400 filter regulator: it removes water and particulate from compressed air and holds downstream pressure at a set point, in a single body. This configuration is built around a 3/8 in NPT port, a 5 um filter element (code W), a manual drain on the metal bowl, a low-pressure regulator type, and a round pressure gauge on the MPa scale. A reverse/check valve is fitted, and the unit is supplied without a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options for drain type, 40 um or 5 um filtration, gauge style and scale, PT/G/NPT thread, bracket and reverse valve. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR400C10MLJC1WTK AirTAC Filter Regulator 3/8 NPT |
|---|---|
| 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 small pneumatic press or clamping fixture, the regulator holds a steady set-point pressure while the 5 um element keeps scale and pipe rust out of the valve seats.
At a laboratory or test-bench drop fed from a shop air ring main, the unit cleans the supply and lets technicians set a low, stable test pressure at the bench.
Feeding the solenoid valves and actuated tooling on a CNC machining centre, the filter regulator strips condensed water and particles and regulates supply at the machine drop.
The real choices in this family are decodable straight from the code. Size 400 with a 3/8 in port sits mid-range; step up to size 600 or down to 300 depending on the flow your line needs - we confirm sizing against the flow curves on request. Drain is manual here, so an operator opens the drain periodically; automatic and differential-pressure drains are available in the family if you would rather not rely on a routine. The 5 um element (code W) suits points of use that need finer particulate capture than the 40 um standard. The gauge on this code is the external round type on the MPa scale; the embedded square gauge and psi/bar scales are alternatives. Thread is NPT as ordered, with PT as the standard and G available. No mounting bracket is included with this code (J).
One honest routing note: flow for this series is published as curves, not as a single rated figure, so ask us to confirm sizing against your application 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 flow for the GFR400 series as curves, not as a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the flow figures from the datasheet before you order.
The L in the code marks the low-pressure regulator type; the exact set range for the low-pressure version is not published in the sheet we work from, so we confirm it on request. The M marks a manual drain, which you open periodically to expel collected water - automatic and differential-pressure drains are available in the family if you prefer not to rely on a routine.
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.