The AirTAC GFR400C15MLJF3WTK 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 GFR400C15MLJF3WTK is a filter regulator: water and particulate filtration plus pressure regulation combined in one body, with a single bowl and one adjustment point instead of two separate units. This configuration is built for 1/2 in NPT ports, carries a 5 um filter element (40 um is the standard alternative), drains by hand through its manual drain, and is the low-pressure type of regulator. It comes with an embedded square gauge scaled in bar, a reverse/check valve fitted, no mounting bracket, and a metal bowl. 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 from the GFR400 size of the G-series air-treatment line, which spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, a choice of manual, automatic or differential-pressure drains, 40 um or 5 um filtration, gauge scales in MPa, psi or bar, and PT, G or NPT threads. AirTAC publishes flow for this series as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing figures for your application before ordering.
| Model | GFR400C15MLJF3WTK 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) |
On a CNC fixture line, the regulator sets the clamping pressure at the fixture while the 5 um element keeps particulate out of the clamp cylinders and their piloted valves; the manual drain lets the operator clear collected water at shift start.
Air-operated ball and diaphragm valves on a water-treatment skid need clean, regulated air; this unit filters the supply to 5 um and regulates it before it reaches the valve actuators, with the reverse/check valve fitted in this configuration.
Carton-forming and sealing stations on a packaging line run air cylinders and air-piloted valves; one GFR400 unit at the machine inlet filters the air to 5 um and regulates it before it branches to the stations, and the manual drain lets an operator discharge collected water on a fixed schedule.
Choose the size by the flow your line needs: sizes 200, 300, 400 and 600 step up in port and capacity, and this unit sits at size 400 with 1/2 in NPT ports. The real, decodable choices on this family are drain type (manual here, with automatic and differential-pressure available), filter grade (5 um here, 40 um standard), gauge scale (bar here; MPa and psi available), thread (PT is the catalogue standard, with G and NPT as order options), bracket (included by default, omitted with code J as on this unit), and the low-pressure (L) regulator variant selected here.
Because AirTAC publishes flow for the GFR series as curves rather than one rated number, we do not quote a flow figure here. Send us your application details and we will confirm the datasheet and sizing with you 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, not as a single rated figure, so we do not quote a number here. Tell us your application and required flow and we will confirm the datasheet flow curves and sizing with you before you order.
This unit drains by hand: the drain on the metal bowl is operated manually, so an operator opens it periodically to discharge collected water instead of relying on an automatic or differential-pressure drain. Automatic (A) and differential-pressure (blank) drain versions are available as alternative configurations in 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.