The AirTAC GFR400C10MLF2W AirTAC Filter Regulator 3/8 in PT 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 GFR400C10MLF2W is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure in a single body. This 400-size unit is built with a 3/8 in PT port, a 5 um filter element (code W, finer than the 40 um standard), a manual drain on the bowl, a low-pressure regulator, and an embedded square gauge scaled in psi. A mounting bracket is included and no reverse/check valve is fitted.
It is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and options for drain type, filter grade, gauge scale, thread (PT standard; G and NPT to order) and bracket. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR400C10MLF2W AirTAC Filter Regulator 3/8 in PT |
|---|---|
| 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, low-pressure regulated air keeps vacuum ejectors and small gripper cylinders on SMT pick-and-place cells running clean and steady, with the psi gauge giving a direct readout during setup.
On form-fill-seal and cartoning machines, the 5 um element protects directional valves from dirt and water carryover, while the low-pressure regulator suits gentle clamp and pusher cylinders.
Bench test rigs and lab automation need clean, low-pressure air that stays where you set it; the square psi gauge allows direct readout for repeatable setup and routine checks.
The real choices in this family are the size and port step, the drain, the filter grade, the gauge and the thread. Size 400 with a 3/8 in PT port sits in the middle of the 200/300/400/600 range; step up or down according to the air your line needs. This unit carries the W grade 5 um element instead of the 40 um standard, a manual drain (you open the drain by hand rather than relying on the differential-pressure default or an automatic drain), a low-pressure regulator, and a square gauge scaled in psi - MPa and bar scales are the alternatives. Thread is PT as standard; G (BSPP) and NPT versions are order options, and a no-bracket (J) variant exists if you mount the unit yourself.
Note that this is the low-pressure (L) type; its exact adjustment range is not published, so confirm it with us before ordering. Because AirTAC publishes flow as curves and not as a single rated figure, we do not quote a number here. Send us your application details and we will confirm the sizing against the datasheet curves 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 GFR flow as curves, not as a single rated figure, so we do not quote a number on the page. Tell us your application and required conditions and we will confirm the flow and sizing from the GFR400 datasheet on request.
Manual drain means you open the drain by hand to expel collected water - simple and dependable where the unit is easy to reach and checked as part of a routine. AirTAC also offers the differential-pressure drain (the family default) and an automatic drain on this family, so a differently coded GFR400 can be ordered if an auto-drain suits your installation better.
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.