The AirTAC GFR40010MJF3WT AirTAC Filter Regulator NPT3/8, 5 um is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT3/8" ports, a manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR40010MJF3WT is a size 400 filter regulator: it removes water and particulate from compressed air and sets downstream pressure in one compact body. This configuration carries a 3/8 in NPT port, a fine 5 um filter element (the W grade, tighter than the 40 um standard), a manual drain on the bowl, and a fitted embedded square gauge scaled in bar. The regulator is the standard type with a 0.05-0.9 MPa (7-130 psi) adjustment range, 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 available in sizes 200, 300, 400 and 600 with a choice of ports, PT (standard), G or NPT threads, manual, automatic or differential-pressure drains, 40 um or 5 um filtration, gauge scale options, and with or without a mounting bracket. Flow figures are published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR40010MJF3WT AirTAC Filter Regulator NPT3/8, 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, bar 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 0.05 - 0.9 MPa (7 - 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. |
|---|---|
| 10 | Port size PT3/8". This body offers 10 = PT3/8", 15 = PT1/2". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT 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 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
Clean, regulated air to a pneumatic press or clamping fixture: the 5 um element keeps fine particulate out of the press valve stack while the regulator holds a repeatable setting for consistent forming and clinching strokes.
Point-of-use conditioning ahead of a CNC machining centre's air-operated tool changer and coolant solenoids, where the fine 5 um grade and a stable set pressure protect sensitive pilot valves from water and debris.
Filtering and regulating the supply to carton sealers and wrapper cylinders on a packaging line, with the bar-scaled square gauge letting operators verify set pressure at a glance during changeover.
Start with the size and port: the 400 frame with its 3/8 in NPT connection suits lines stepping up from 1/4 in circuits, but always size against the air demand of the downstream equipment - we can confirm the flow curve from the datasheet before you order. Because this unit has a manual drain, plan a walk-round to bleed the bowl; choose automatic or differential-pressure drain codes if nobody will be on site to drain it. The 5 um (W) element is the right pick where finer particulate matters, such as ahead of precision valves or instruments; the 40 um standard grade suits general plant air. The square gauge here reads in bar; MPa and psi scales are also available. PT is the standard thread, with G and NPT as catalogue options, and a mounting bracket can be ordered - this J-code unit ships without one.
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 performance curves, not as a single rated figure, so we do not quote one number. Tell us your line pressure and the air demand of your equipment and we will confirm the relevant curve and sizing from the datasheet on request before you order.
The M in the code specifies a manual drain: condensate collected in the PC bowl is released by operating the drain by hand. It is the simple, dependable choice when someone is on site regularly; if the unit will be left unattended, ask about the automatic (A) or differential-pressure (blank) drain codes for the same size.
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.