The AirTAC GFR400-15MLF2W AirTAC Filter Regulator PT1/2 5um Manual 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 GFR400-15MLF2W is an AirTAC GFR400 filter regulator: water and particulate filtration plus pressure regulation combined in one body. This configuration is the 400 size with a 1/2 in PT port, fitted with the fine 5 um filter element (code W), a manual drain for emptying the bowl by hand, and the embedded square pressure gauge scaled in psi. It is the low-pressure regulator type, and a mounting bracket is included.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with a choice of ports, PT, G or NPT threads, differential-pressure, automatic or manual drains, 40 um or 5 um elements, standard or low-pressure regulation, gauge scales in MPa, psi or bar, and an optional reverse/check valve. Flow figures are published as curves rather than a single rating, so ask us to confirm the datasheet for your application.
| Model | GFR400-15MLF2W AirTAC Filter Regulator PT1/2 5um Manual |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (PT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 130 psi) |
| Pressure type | Low-pressure 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, psi 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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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)). |
| L | Low-pressure 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. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 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 · PT1/2" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Fixture clamps and swing cylinders on an assembly bench run at reduced pressure; this unit filters the shop air to 5 um and holds the low regulated setting the clamping circuit was designed around, with the psi gauge giving the operator a direct reading.
Pick-and-place and carton-forming cylinders on a packaging conveyor need clean, regulated air at a modest setting. The 5 um element protects valve spools from particulate and the manual drain lets maintenance empty the bowl during scheduled changeovers.
Bench-top test rigs, sample-handling actuators and lab instruments are sensitive to both dirt and overpressure. This low-pressure type regulator with fine 5 um filtration conditions the supply to those devices, and the included bracket allows tidy panel or frame mounting.
Step up or down through the 200/300/400/600 sizes to match the port and the flow your line needs, then choose PT, G (BSPP) or NPT to suit existing pipework. Where a drain is needed, decide between manual (you drain the bowl on a schedule), automatic (no operator involvement) or the default differential-pressure type. Pick the 40 um element for general protection or the 5 um element (code W) where downstream equipment needs finer air. Choose the gauge scale (MPa, psi or bar) and, if you prefer, the optional external round gauge instead of the embedded square one; a bracket can be omitted with code J.
Flow for this family is published as curves, not a single rated figure, so we cannot quote one number here. Send us your application details and we will confirm sizing and the full 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 series as curves rather than a single rated figure, so we do not quote one number. Tell us your application and we will confirm the flow curve and full datasheet for this model on request before you order.
The M in the code selects a manual drain: the bowl is emptied by hand on a maintenance schedule instead of automatically. This is also the low-pressure regulator type, so its adjustment range differs from the standard unit; the exact range is not published in our sheet, and we will confirm it on request.
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.