The AirTAC AirTAC GFR40015MJC3WT Filter Regulator NPT1/2, 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 PT1/2" 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 GFR400 series combines water and particulate filtration with pressure regulation in a single body. This GFR40015MJC3WT is the 400 size with a 1/2 in NPT port, a manual-drain bowl in polycarbonate, a 5 um filter element (code W), a round gauge reading in bar, and no mounting bracket. The manual drain means an operator opens the bowl drain by hand to expel collected condensate, which suits installations visited on a routine maintenance round.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, PT as the standard thread and G or NPT as order options, a choice of differential-pressure, automatic or manual drains, 40 um standard or 5 um filtration, and gauge choices. Maximum inlet pressure is 1.0 MPa (145 psi), the set range with a manual drain is 0.05-0.9 MPa (7-130 psi), and the working temperature is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm datasheet figures for your application.
| Model | AirTAC GFR40015MJC3WT Filter Regulator NPT1/2, 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (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 — round, 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. |
|---|---|
| 15 | Port size PT1/2". 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). |
| C | Gauge shape: Round. 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 · PT1/2" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Air preparation for a pneumatic stamping press: the 5 um element protects directional valves from particulate and water while the regulator holds a steady working pressure at the press frame, with the bar-scale gauge read during shift checks.
Packaging and case-erector lines running 1/2 in air drops: filtration and regulation at the drop point keep cylinders and grippers supplied, and the manual drain is emptied as part of the daily clean-down round.
Compressed-air supply to a laboratory bench or test rig where finer 5 um air is wanted ahead of instruments and fixtures, with outlet pressure set locally on the round bar-scale gauge.
Size and port set the air capacity: the 400 size with a 1/2 in port sits above the 300 and below the 600 in the GFR range. Because flow is published as curves, not a single rated figure, send us your demand and we will confirm the right size before you order. This unit carries the 5 um element (W) instead of the 40 um standard, a manual drain instead of automatic or differential-pressure, and a round bar-scale gauge; the embedded square gauge with MPa/psi/bar scales is the catalogue alternative. The thread here is NPT, ordered as an option against the PT standard, and the J code means no mounting bracket is fitted.
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 as curves rather than a single rated figure, so we do not quote a number here. Send us your flow demand and working pressure and we will confirm from the datasheet whether the 400 size at 1/2 in NPT is correctly sized before you order.
The M code means condensate is released by opening the bowl drain by hand, which suits lines visited on a fixed maintenance round. If the unit is hard to reach or runs unattended, ask us about the automatic or differential-pressure drain versions of the same GFR400 unit.
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.