The AirTAC GFR400C15LF2WT 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 GFR400C15LF2WT is a 400-size filter regulator: one body that removes water and particulate from compressed air and holds a steady downstream pressure. This configuration is the low-pressure regulator type, fitted with a 5 um filter element (code W), a differential-pressure drain that bleeds collected condensate automatically as flow passes through, an embedded square gauge reading in psi, and a metal bowl. The port is 1/2 in NPT thread, and a mounting bracket is included.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and options for manual or automatic drains, 40 um or 5 um filtration, gauge scale in MPa, psi or bar, and PT, G or NPT threads. Flow figures for this series are published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR400C15LF2WT 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) |
On a fixture line where clamp cylinders must hold at a low, steady set pressure rather than full line pressure, this low-pressure filter regulator cleans the supply and holds the setting, with the psi gauge giving the operator a direct readout at the station.
Feeding the solenoid-valve manifold that drives conveyor diverters and stops, the 5 um element strips fine particulate and water that would otherwise score valve spools, while the regulator keeps the supply steady as upstream demand fluctuates.
At a paint or coating booth, clean, dry, correctly set air is the whole job: the 5 um filtration and stable regulated supply protect the finish, and the differential-pressure drain clears condensate automatically between spray cycles.
Start with the port step: this unit is 400 size with a 1/2 in NPT port, the larger of the mid-range sizes, so match it to the line size and the air demand of the circuit it feeds - we will confirm the flow curve against your requirement before you order. The regulator in this unit is the low-pressure type, intended for circuits set below the standard regulating band; the exact range for the low-pressure type is not published in the sheet we work from, so confirm the set pressure with us. Filtration here is the fine 5 um element (code W) rather than the 40 um standard - choose 5 um where downstream valves, cylinders or instruments need cleaner air. The drain is differential-pressure, the default: it discharges condensate automatically as air flows, with no operator input; manual-drain and automatic-drain variants exist in the family if your duty cycle suits them better. The square gauge is fitted and reads in psi; MPa or bar scales and an external round gauge are order options. Thread is NPT here - PT is the catalogue standard and G (BSPP) is also available. A mounting bracket is included.
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 here. Tell us your application and required flow and we will confirm the datasheet curve figures for this exact configuration on request.
The differential-pressure drain is the default on this unit: condensate collected in the bowl is discharged automatically whenever air flows through the unit, so no one has to open a drain valve. If your usage is intermittent or you want positive control, manual-drain and fully automatic-drain variants are available in the GFR400 family - ask us to quote the alternative 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.