The AirTAC AirTAC GFR40015MF1WT Filter Regulator NPT 1/2 in, 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 is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This unit is the size 400 configuration with a 1/2 in NPT port, a 5 um filter element (code W, one step finer than the 40 um standard), manual drain, and a square pressure gauge with MPa scale fitted. The manual drain means an operator opens the bowl drain to discharge collected condensate, which suits lines that are checked as part of a routine walk-round. The polycarbonate bowl lets you see the condensate level at a glance.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drain, 40 um or 5 um filtration, gauge scale options, and PT, G or NPT threads. 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 | AirTAC GFR40015MF1WT Filter Regulator NPT 1/2 in, 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 — square, MPa 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. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 1 | Gauge scale: MPa. 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) |
Feeding a pneumatic press cylinder on a metal stamping cell: the 5 um element keeps fine scale and pipe debris out of the press valve stack, while the regulator holds a repeatable setting so the press cycle stays consistent shift to shift. The 1/2 in NPT port suits the larger supply drops a press cell typically runs.
Supplying air to diverter gates and stopper cylinders on a packaging conveyor line. The filter-regulator sits at the drop point, the manual drain is emptied during the line's scheduled changeover, and the square MPa gauge gives operators a visible line-pressure reference at the machine.
Conditioning the air feeding transfer cylinders and clamps in a paint-shop handling station, where overspray and moisture make the finer 5 um element worthwhile. The polycarbonate bowl shows condensate build-up at a glance, and the included bracket mounts the unit at the station's air inlet panel.
Start with the port and size step: this is size 400 with a 1/2 in NPT port, one step up from size 300 (1/2 in is also available at size 400 only in this family's larger frames, so match the frame to the flow your line needs - we can check the flow curves against your demand before you order). The 5 um element (code W) is the right choice when downstream valves and cylinders see finer contamination than the 40 um standard element removes; keep 40 um in mind if the air is pre-filtered elsewhere. Manual drain suits attended installations; choose automatic or differential-pressure drain for unattended duty. The fitted square gauge reads in MPa; psi and bar scales and an external round gauge are alternatives. PT is the standard thread; G (BSPP) and NPT are catalogue options ordered by suffix - this unit is the NPT version. A mounting bracket is included.
One honest note on sizing: AirTAC publishes flow for this family as curves, not a single rated figure, so we do not quote a flow number. Send us your application's flow and pressure requirement and we will confirm the correct size from 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 family as curves, not as a single rated number, so we do not quote a flow figure here. Tell us your required flow and working pressure and we will read the correct figure from the datasheet and confirm that size 400 at 1/2 in suits your application before you order.
The M in the code specifies a manual drain: an operator opens the bowl drain to release collected water instead of the unit discharging automatically. Manual drain suits installations that are inspected on a routine schedule. For unattended or hard-to-reach positions, the differential-pressure (default) or automatic drain versions of the same GFR400 unit are the better choice.
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.