The AirTAC GFR400C15MLJC3WT 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 GFR400C15MLJC3WT is a filter regulator: water and particulate removal plus pressure regulation combined in one body. This size 400 unit carries a 1/2 in NPT port, a 5 um filter element (the finer of the two published grades), a manual drain for operator-controlled water removal, and a low-pressure regulator fitted with a round gauge reading in bar. The polycarbonate bowl suits non-freezing compressed-air service from -5 to 70 C, with a maximum working (inlet) pressure of 1.0 MPa (145 psi). No mounting bracket is included and no reverse/check valve is fitted.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, and options including 40 um or 5 um filtration, differential-pressure, automatic or manual drains, embedded square or external round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Because flow is published as curves rather than a single rating, we confirm flow and datasheet figures for your application on request.
| Model | GFR400C15MLJC3WT 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) |
Filtering and regulating shop air at the machine drop that feeds tool-clamp and tool-change cylinders. The 5 um element strips water and fine particulate before they reach the machine's directional valves, and the bar-scale gauge gives the maintenance team a direct pressure readout.
Supplying a reduced, stable air feed to packaging machinery actuators that run below standard header pressure. The low-pressure regulator suits circuits set well under normal line pressure, and the manual drain lets an operator bleed collected water at the start of each shift.
Regulated air for gate and diverter cylinders on a bottling or carton conveyor line. Combining the filter bowl and regulator in one body saves panel space at the line drop, and the 1/2 in NPT port matches the larger supply drops typical of conveyor runs.
Step up through the GFR sizes (200/300/400/600) as your port and air demand grow; this unit is the size 400, 1/2 in port step. Drain choice matters: manual (this unit) needs an operator to bleed the bowl, while automatic and differential-pressure drains discharge without attention. Filtration is 40 um standard or 5 um (this unit, code W) when downstream valves and cylinders need finer protection. Gauges are an embedded square gauge as standard or an external round gauge, with MPa, psi or bar scales; this unit carries a round gauge reading in bar. Thread is PT as standard with G and NPT as order options - this unit is NPT. A mounting bracket is optional; this configuration omits it. Flow is published as curves, not a single rating, so 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 GFR flow as curves rather than a single rated figure, so there is no one l/min or SCFM number we can honestly quote. Send us your application details and we will confirm the flow figures from the datasheet for this exact size 400, 1/2 in port unit on request.
A manual drain means an operator opens the drain to expel water collected in the bowl, which suits attended installations with scheduled checks. If the unit sits where nobody regularly attends it, the automatic or differential-pressure drain versions of the same GFR400 size are the better decode - ask us and we will identify the matching code.
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.