The AirTAC GFR400C10MLF1WT AirTAC Filter Regulator NPT 3/8 in 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 GFR400C10MLF1WT is an AirTAC GFR400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 400 unit is configured with a 3/8 in NPT port, a 5 um filter element (code W), a manual drain on the metal bowl, the L low-pressure regulator type, an embedded square gauge scaled in MPa, a mounting bracket, and no reverse/check valve. 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 port sizes from 1/8 to 1 in, and options include differential-pressure, automatic or manual drains, a 40 um standard or 5 um (W) element, square or external round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR400C10MLF1WT AirTAC Filter Regulator NPT 3/8 in |
|---|---|
| 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) |
Feeds filtered, regulated air to clamping cylinders that hold workpieces during assembly or welding, where the low-pressure regulator holds the clamp pressure at a controlled setpoint and the 5 um element keeps dirt out of the valve stack.
Supplies cleaned, regulated air to film-seal and heat-seal cylinders on a packaging line, with the manual-drain bowl bled during scheduled changeovers and the MPa gauge giving operators a clear setpoint reference.
Regulates supply pressure to diverter gates and stopper cylinders along a conveyor line, where maintenance staff drain accumulated water from the bowl during routine rounds and the bracket simplifies mounting at the line drop.
Size 400 with a 3/8 in NPT port sits in the upper mid-range of the G-series port steps (1/8, 1/4, 3/8, 1/2, 3/4, 1 in); step up or down a size to match the pipe and air demand of your line. This code is the L low-pressure regulator type, and the exact low-pressure adjustment range is not published, so confirm it with us against your setpoint before ordering. The 5 um (W) element is the finer of the two published grades (40 um is standard); the M drain means an operator bleeds the bowl manually, which suits lines with routine maintenance rounds, while automatic and differential-pressure drains are available on other codes. The embedded square gauge reads in MPa, with psi and bar scales and an external round gauge as order options. PT is the standard thread and G or NPT are catalogue options - order the suffix you need. A bracket is included with this code. Flow is published as curves, not a single rating, 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 GFR series as curves, not as a single rated figure, so we do not quote a number here. Send us your inlet pressure, set pressure and air demand and we will confirm the flow from the datasheet for this size 400, 3/8 in unit before you order.
M selects a manual drain: an operator opens the bowl drain to release collected water, which suits lines with routine maintenance rounds (automatic and differential-pressure drains are on other codes). L is the low-pressure regulator type, whose exact adjustment range is not published - confirm it with us against your setpoint. W selects the 5 um filter element instead of the 40 um standard.
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.