The AirTAC GFR400C10MJF3WT 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 GFR400C10MJF3WT is an AirTAC GFR400 filter regulator: a 5 um filter element and a pressure regulator combined in one body, sized 400 with a 3/8 in NPT port. Water and particulate are separated into the metal bowl, which is emptied by hand through the manual drain, while the standard regulator holds downstream pressure anywhere in its 0.05-0.9 MPa (7-130 psi) adjustment range. Maximum inlet pressure is 1.0 MPa (145 psi), the working temperature range is -5 to 70 C (non-freezing), and the embedded square gauge reads in bar. No mounting bracket is fitted and no reverse/check valve is included.
This is a genuine AirTAC part. The GFR range spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um standard or 5 um (W) filtration, square or round gauges scaled in MPa, psi or bar, and PT (standard), G or NPT threads. Flow figures are published as curves rather than a single rating, so ask us to confirm the datasheet for your application.
| Model | GFR400C10MJF3WT 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) |
Filter and regulate the air supply to pneumatic clamps on a machining fixture, so water and fine particulate are caught upstream while clamp pressure stays where the cycle needs it.
Feed the directional valves and cylinders of a carton-sealing or case-packing line: the 5 um element screens fine particulate while the regulator holds a steady supply pressure.
Supply air to a lab or pilot-scale test rig that needs clean, manually adjustable pressure, where the bowl can be drained by hand during scheduled checks.
The real choices in this family are decodable from the code. Step up or down through sizes 200, 300, 400 and 600 - each step brings a larger port (1/8 to 1 in) and more flow capacity, so match the size to the air demand of the circuit rather than the pipe alone. Drain type matters: this unit is manual, meaning the bowl is bled by hand on a maintenance schedule; automatic and differential-pressure drains suit installations that cannot be reached easily. Filtration is 5 um here (W code) against the 40 um standard - go finer only where downstream valves and cylinders need it.
The gauge is the embedded square type with a bar scale; MPa and psi scales and an external round gauge are alternatives. Thread is PT as standard, with G and NPT as order options - this unit is specified NPT - and no mounting bracket is fitted (J code). Because flow is published as curves rather than a single rated figure, send us your application 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 GFR400 as curves, not as a single rated figure, so we do not quote a number here. Tell us your operating pressure and air demand and we will confirm the flow from the datasheet on request.
The M code in GFR400C10MJF3WT specifies a manual drain: collected water is released by operating the drain by hand, so the bowl should be checked on a maintenance schedule. Automatic and differential-pressure drains are available in the same size if you would rather not rely on manual draining.
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.