The AirTAC GFR400C15MLJF1WT AirTAC Filter Regulator NPT1/2 Low-Pressure 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 GFR400C15MLJF1WT is a size 400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration carries a 1/2 in NPT port, a fine 5 um filter element (code W), a manual drain bowl, the low-pressure regulator type, an embedded square gauge scaled in MPa, and no mounting bracket. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family is offered in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and with choices of drain type, filter grade, gauge scale, thread (PT standard, G and NPT as options) and bracket. Flow is published as curves rather than a single rating, so ask us and we will confirm the flow and datasheet figures for your application on request.
| Model | GFR400C15MLJF1WT AirTAC Filter Regulator NPT1/2 Low-Pressure |
|---|---|
| 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) |
Feeds and regulates the air to fixture clamps that must hold workpieces at reduced pressure, with the 5 um element keeping fine particles out of the clamp cylinders and the MPa gauge giving the operator a direct pressure readout.
Conditions the supply to atomizing guns and air-assisted applicators that run at reduced pressure, filtering water and particulate before the gun while the manual-drain bowl is emptied during routine booth clean-down.
Supplies the low-pressure air circuits that actuate sealing bars, diverters and hold-downs along a packaging conveyor, with the 5 um grade protecting small valves and the square gauge letting line staff verify set pressure at a glance.
Step up or down the size (200/300/400/600) and port (1/8 to 1 in) to match the air demand of the line - the 400 body with a 1/2 in port sits in the upper mid-range of the family. Because flow is published as curves and not as a single rated figure, ask us to confirm sizing against your application before ordering. For this unit the key decodable choices are already set: manual drain (simple, operator-emptied bowl), the 5 um element for finer filtration than the 40 um standard, the low-pressure regulator type, a square MPa gauge, and NPT thread (PT is the catalogue standard; G and NPT are options to order). No mounting bracket is included with the J suffix. The exact regulation range of the low-pressure type is not published; we will confirm it from the datasheet on request.
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 l/min, m3/h or SCFM figure here. Tell us your inlet pressure and the air demand of your equipment and we will confirm the flow from the datasheet for this exact model on request.
The M in the code sets a manual drain: the bowl is emptied by hand rather than automatically, which suits installations checked as part of a routine. The W sets the 5 um filter element, a finer grade than the 40 um standard, for downstream equipment that needs cleaner air. If you would rather not drain by hand, ask us about the automatic-drain variant of the same size.
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.