The AirTAC GFR400C15ALF2WT 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 GFR400C15ALF2WT is a size-400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is built with 1/2 in NPT ports, a 5 um filter element for finer air cleaning, an automatic drain that ejects collected condensate without manual attention, and an embedded square gauge reading in psi. It is the low-pressure regulator type, includes a mounting bracket, and carries a polycarbonate 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 series. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, and options that include manual or differential-pressure drains, a 40 um standard element, alternative gauge scales (MPa/psi/bar) and G or NPT threads in place of the PT standard. Flow is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR400C15ALF2WT 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) |
Fixture clamps and swing cylinders on a machining centre need clean, gently regulated air so parts are held without over-clamping. This unit filters the supply to 5 um, regulates it at low-pressure settings, and the automatic drain keeps condensate out of the fixture circuit during long unattended runs.
Baggers and tray sealers run actuator banks that are sensitive to both dirt and pressure drift. A single GFR body conditions the air for the whole station: the 5 um element protects the valve bank, the low-pressure regulator holds a repeatable sealing pressure, and the psi gauge lets operators verify settings at a glance.
Paint lines suffer when water or fine particles reach the gun. Feeding the booth supply through this filter regulator removes moisture and 5 um particulate, holds a stable low regulated pressure for consistent atomisation, and the automatic drain handles condensate without a daily walk-round.
Choose the size and port step against the air demand of the circuit: this unit is size 400 with 1/2 in NPT ports, the larger step in the range for higher-consumption lines. Drain type is a real choice: automatic (fitted here) suits unattended duty, manual suits periodically serviced stations, and differential-pressure draining is the catalogue default. Filter grade is 40 um standard or 5 um (code W) for finer protection - this unit carries the 5 um element. Gauge scale is selectable (MPa, psi or bar; this unit is psi), and the regulator type is standard or low-pressure (L), which matters when the circuit works below normal shop-air settings - the exact low-pressure range is not published, so confirm it with us. Thread is PT as standard with G and NPT as order options, and a bracket is included on this unit. Because flow is published as curves rather than a single rating, 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 flow for this series as curves, not as a single rated figure, so we do not quote a l/min or SCFM number. Tell us your line pressure and air demand and we will confirm the sizing from the datasheet on request.
The automatic drain ejects collected condensate on its own, which suits duty where nobody opens the bowl regularly. The catalogue alternatives are a manual drain and the differential-pressure drain (the default). This configuration is ordered with the automatic drain; the other types can be selected when you choose your model.
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.