The AirTAC GFR400C10MLF1T AirTAC Filter Regulator 3/8 in 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 AirTAC GFR400 series is a filter regulator: water and particulate removal plus downstream pressure regulation combined in a single body, with a drain bowl but no lubricator. This configuration, GFR400C10MLF1T, is the size 400 unit with a 3/8 in NPT port, the standard 40 um filter element, a manual drain, the low-pressure regulator type, an embedded square gauge with MPa scale, and a mounting bracket included. No reverse/check valve is fitted. 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 GFR400 family is available in a range of sizes and port options, with a choice of drain type (manual, automatic or differential-pressure), an optional 5 um element (code W), gauge scales in MPa, psi or bar, and an optional external round gauge in place of the standard embedded square gauge. Flow is published as curves rather than a single rating, so we confirm flow and other datasheet figures on request before you order.
| Model | GFR400C10MLF1T AirTAC Filter Regulator 3/8 in 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) |
Filtered, regulated air to clamp cylinders on a machining fixture, where the low-pressure regulator type holds a gentle, controlled clamp force and the 40 um element keeps swarf-laden shop air out of the valve seats.
A supply point for conveyor-mounted pneumatic stoppers and diverters, with the manual drain bowl emptied at shift checks and the square MPa gauge giving the operator a clear line-pressure reference.
Prep of plant air feeding small actuators and air cylinders at a bottling fill station, where filtered and regulated low-pressure air protects downstream valves and the bracket gives tidy panel mounting.
Start with the size and port: this unit is size 400 with a 3/8 in NPT port, and the G-series steps up through sizes 200, 300, 400 and 600 with matching ports, so pick the step that suits the air demand of the line. Drain type is a real choice: this unit has a manual drain (code M), which you empty by hand; automatic and differential-pressure drains are available on other configurations if you cannot schedule manual draining. The filter grade here is the standard 40 um element; specify code W if the application needs the 5 um grade. The gauge fitted is the embedded square type with MPa scale; psi and bar scales and an external round gauge are order options. Thread: PT is the standard, with G (BSPP) and NPT as catalogue options - this unit is ordered with NPT. A mounting bracket is included on this configuration.
One honest note on sizing: AirTAC publishes flow for this series as curves, not as a single rated figure, and the exact regulation range of the low-pressure type is not published on our sheet. Ask us to confirm flow and regulation figures against your application before ordering.
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 rather than a single rated figure, so we do not quote a number here. This unit is also the low-pressure regulator type, whose exact regulation range is not published on our sheet. Send us your line pressure, port size and air demand, and we will confirm the flow curve and regulation figures from the datasheet before you order.
The M in the code means the drain bowl is emptied by hand: an operator opens the drain at a scheduled check. Choose manual drain when the unit is accessible and someone already services the line, and choose an automatic or differential-pressure drain configuration instead when the installation is hard to reach or runs unattended. The bowl on this size 400 unit is polycarbonate, so keep it away from freezing conditions; the rated temperature range is -5 to 70 C.
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.