The AirTAC GFR400C15LF3WT 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 GFR400C15LF3WT 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 fine 5 um filter element (code W), a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the element rises, and a low-pressure regulator type. An embedded square gauge graduated in bar is fitted, the bowl is metal, a 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 in to 1 in, and can be ordered with manual or automatic drains, a 40 um standard element, alternative gauge scales, G (BSPP) or NPT threads in place of the PT standard, and with or without a bracket. Flow is published as curves rather than a single rating, so we confirm the datasheet and sizing figures for your application on request.
| Model | GFR400C15LF3WT 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 filtered, regulated air to a bench-mounted pneumatic press or clamping fixture, where the 1/2 in port serves a larger cylinder supply line and the 5 um element protects direction valves from particulate carryover.
Conditioning the air feed on a packaging or case-erecting conveyor line, where the low-pressure regulator type suits actuation circuits that run at modest settings and the differential-pressure drain keeps condensate off the valves.
Mounted on the bracket inside a machine tool or assembly-cell pneumatic panel, giving one filtered and regulated take-off with a bar-reading square gauge for the maintenance team to verify settings at a glance.
Step up through the GFR sizes (200/300/400/600) and their port sizes (1/8 in to 1 in) until the unit covers the air demand of the line; because flow is published as curves rather than a single rated figure, ask us to check the curve for GFR400 against your consumption before ordering. Choose the drain to suit access: differential-pressure (as fitted here) needs no daily attention, automatic drains continuously, and manual drains suit supervised points. The standard element is 40 um; this unit's 5 um W element suits downstream equipment that needs finer filtration. Gauge scale (MPa, psi or bar - bar fitted here), thread (PT standard, G or NPT to order) and bracket are the remaining decodable choices.
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. Send us your line pressure and air consumption and we will confirm the flow curve and sizing for the GFR400 against your application before you order.
The W code in GFR400C15LF3WT selects the optional 5 um filter element in place of the 40 um standard. The finer grade suits downstream valves, cylinders and instruments that need cleaner air; if your application only needs bulk water and particle removal, the 40 um standard version of the same size is available.
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.