The AirTAC GFR400C10MLJF1T 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 GFR400C10MLJF1T is an AirTAC GFR-series filter regulator: water and particulate filtration plus pressure regulation combined in a single body, with a drain bowl but no lubricator. This size 400 unit is threaded 3/8 in NPT, has a metal bowl with a manual drain and a 40 um standard filter element, and carries a low-pressure regulator, so it suits circuits that run well below standard shop-air pressure. An embedded square gauge scaled in MPa is fitted for setting and monitoring downstream pressure; the unit is supplied without a mounting bracket and 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 GFR family is made in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options across the range include automatic or differential-pressure drains, a 5 um filter element (code W), gauge scales in psi or bar, G (BSPP) or NPT threads, and mounting brackets. Flow is published as curves rather than a single rating, so ask us to confirm sizing and any datasheet figure for your application before ordering.
| Model | GFR400C10MLJF1T 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) |
Packaging and converting lines that run glue heads, spray valves or sealant guns at reduced pressure use a filter regulator at each station to strip water from the air and hold a steady low setpoint at the applicator.
Fixture clamps and swing cylinders on a CNC machining cell take their air through a filter regulator at the cell drop, keeping moisture out of the valve stack and giving the setter a gauge to set and check working pressure.
Filler, capper and labeler air cylinders on a bottling line are fed through a filter regulator at the line drop, so water is removed before it reaches the valves and the line supervisor has a gauge to set and monitor circuit pressure.
The real choices in this family are the size and port step, the drain type, the filter grade and the thread. Size 400 with a 3/8 in NPT port sits in the middle of the 200-600 range; step up or down according to the flow your circuit needs, which we confirm against the published curves rather than a single rating. The M code specifies a manual drain, meaning the bowl is bled by hand on a routine you set; choose the automatic or differential-pressure drain codes where the unit is hard to reach. The 40 um element is standard and covers general plant air; specify the W code for a 5 um element where downstream equipment needs finer filtration.
Gauges can be scaled in MPa, psi or bar, and threads come as PT (the standard), G (BSPP) or NPT as order options; brackets are optional on this configuration. Because flow is published as curves, not a single rated figure, send us your application conditions and we will confirm sizing against the datasheet 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 rather than a single rated figure, so we do not quote a number here. Tell us your inlet pressure, set pressure and required flow, and we will confirm from the datasheet whether this size 400 unit with a 3/8 in NPT port suits your application.
The M in the code specifies a manual drain: the bowl is bled by hand on a routine you set. If the unit will be mounted where routine draining is impractical, the same GFR400 size is available with an automatic or differential-pressure drain - just ask for the matching code.
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.