The AirTAC GFR400C15MLF1WTK AirTAC Filter Regulator NPT1/2 is a genuine G-series filter regulator: water separation, 40 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has See datasheet ports, a differential-pressure drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR400C15MLF1WTK is a size 400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration carries a 1/2 in NPT port, a 5 um filter element (code W), a manual drain, a low-pressure regulator type with an embedded square MPa gauge, a reverse/check valve, and a mounting bracket. With the manual drain, accumulated condensate is emptied by hand, so the unit suits installations where someone can walk the line and drain bowls as part of routine checks. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing. The bowl on this size is polycarbonate (PC); only size 600 units use an aluminium alloy bowl.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with matching ports, a choice of differential-pressure, automatic or manual drains, 40 um standard or 5 um (W) filtration, square or gauge options with MPa, psi or bar scales, and PT (standard), G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm flow and datasheet figures for this exact model before ordering.
| Model | GFR400C15MLF1WTK AirTAC Filter Regulator NPT1/2 |
|---|---|
| Series | GFR400 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — factory standard, Factory standard 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 0.15 - 0.9 MPa (20 - 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. |
|---|---|
| C1 | Port size See datasheet. This body offers 10 = PT3/8", 15 = PT1/2". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-C1 (two-unit set) |
Feeding clamp and hold-down cylinders on a press-cell air header: the 5 um element keeps fine particulate out of the clamp valves while the low-pressure regulator holds the lower circuit pressure these clamps are set up for, and the square MPa gauge gives the setter a direct read at the cell.
A 1/2 in drop feeding air cylinders and diverters on a packaging conveyor: the filter-regulator conditions the branch in one body, the manual drain suits a line walked each shift, and the check valve holds the set downstream pressure if upstream supply dips.
Supplying purged enclosures and sample-handling actuators on a water-treatment or laboratory skid: the 5 um grade protects sensitive pneumatic instruments, the low-pressure type regulates at modest setpoints, and the MPa gauge allows a verified setpoint during commissioning.
Start with the port: this unit is the 1/2 in size 400 step, so match it to line size and the flow your application needs - as a guide, step up a size when the demand sits near the top of a smaller unit's curve. The 5 um element (W code) is the finer of the two published grades (40 um is standard); choose it where downstream valves or instruments are sensitive to finer particles. The manual drain is the right pick when drains can be emptied on a routine; choose automatic or differential-pressure drain codes where the bowl cannot be attended regularly. This is the low-pressure regulator type, so its adjustment range differs from the standard type - we confirm the exact range from the datasheet on request. The embedded square gauge reads in MPa; psi and bar scales and an external round gauge are order options. Thread here is NPT; PT is the catalogue standard and G is also available. A bracket is included. Because flow is published as curves, not a single rating, ask us to confirm sizing against your application before ordering.
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 curves, not as a single rated number, so we do not quote a figure that is not in the datasheet. Tell us your line pressure and the flow your application needs and we will confirm the sizing from the datasheet curves for this exact model before you order.
The M code in this model specifies a manual drain: condensate collected in the polycarbonate bowl is emptied by hand, which suits attended lines with routine checks. If the installation cannot be walked regularly, the same size is available with an automatic or differential-pressure drain instead - and note this is the low-pressure regulator type, so we confirm its exact adjustment range from the datasheet 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.