The AirTAC GFR40015MLC1WT AirTAC Filter Regulator NPT1/2 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 GFR40015MLC1WT is an AirTAC GFR-series filter regulator: one body that removes water and particulate from compressed air and then regulates the downstream pressure. This 400-size unit is built for 1/2 in NPT ports, carries the finer 5 um filter element (code W), drains by hand through its manual drain, and is the low-pressure regulator variant (code L). A round pressure gauge with an MPa scale is fitted, and the mounting bracket is included. The bowl on this 400 size is polycarbonate (PC); 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 spans 200, 300, 400 and 600 sizes with ports from 1/8 to 1 in, a choice of manual, automatic or differential-pressure drains, 40 um standard or 5 um (W) filtration, gauge styles and MPa/psi/bar scales, and PT, G or NPT threads. Flow for this family is published as curves rather than a single rating, so ask us to confirm the datasheet figures and the adjustment range of the low-pressure variant for your application before ordering.
| Model | GFR40015MLC1WT AirTAC Filter Regulator NPT1/2 |
|---|---|
| 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 | 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 — round, 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. 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). |
| C | Gauge shape: Round. 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 spray guns and air-assisted applicators on a paint line, where the 5 um element keeps water and fine particles out of the finish and the low-pressure regulator holds a gentle set pressure at the gun.
Supplying low-pressure clamping circuits on an assembly fixture: filtered air protects the cylinder seals, the regulator holds the clamp setting, and the manual drain suits a cell serviced every shift.
Conditioning air for diverters, pushers and seal cylinders on a packaging conveyor, with the round MPa gauge giving operators a visible setpoint and the included bracket allowing frame or panel mounting.
Size and port step up together: 200, 300, 400 and 600 cover progressively larger ports and flow. This unit is a 400 with a 1/2 in NPT thread; PT (the standard thread) and G are orderable options on the same series. The 5 um element (code W) suits air that feeds sensitive components, while the 40 um standard element is the default where only coarse protection is needed. Drains come as manual (this unit), automatic, or the default differential-pressure type - choose manual where the bowl is checked as part of a routine, automatic where the unit is hard to reach. Gauge scales can be ordered in MPa, psi or bar, and the L in this code marks the low-pressure regulator variant.
One honest note on sizing: AirTAC publishes flow for this family as curves, not as a single rated figure, so we will not quote a number here. Send us your application details and we will confirm the flow curve and the full datasheet, including the adjustment range of the low-pressure variant, 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 rather than a single rated number, so we do not quote a figure here. Tell us your application and we will confirm the flow curve and the full datasheet figures for this 400-size, 1/2 in NPT unit before you order.
The M in the code specifies a manual drain: condensate is emptied by hand, which suits stations checked as part of a routine. The same GFR400 series is also available with an automatic drain (code A) or the default differential-pressure drain, and drain choice is one of the configuration details we confirm with you before ordering.
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.