The AirTAC GFR40015ALC2WTK AirTAC Filter Regulator NPT1/2 5 um is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT1/2" ports, a automatic 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 GFR400 series combines water and particulate filtration with pressure regulation in a single body, so one 1/2 in connection cleans the air and sets a stable downstream pressure. This configuration, GFR40015ALC2WTK, is the low-pressure type with a 5 um filter element (code W), an automatic drain that bleeds collected condensate from the PC bowl without anyone opening it, a reverse/check valve fitted (code K), a round gauge reading in psi, and an included mounting bracket. The NPT thread suits US pipework directly.
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600, with port options from 1/8 in to 1 in, PT as the standard thread and G (BSPP) or NPT as order options, drain choices of differential-pressure, automatic or manual, and 40 um standard or 5 um filtration. Flow is published as curves rather than a single rating, so ask us and we will confirm the datasheet and sizing figures for your application on request.
| Model | GFR40015ALC2WTK AirTAC Filter Regulator NPT1/2 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Low-pressure 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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, psi scale |
| Reflux valve | Fitted (reverse flow permitted) |
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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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. |
|---|---|
| 15 | Port size PT1/2". This body offers 10 = PT3/8", 15 = PT1/2". |
| A | Drain: Automatic drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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 · PT1/2" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Feeding pneumatic cylinders on a bottled-product filling line: the 5 um element keeps wear particles and water out of the actuators while the regulator holds the reduced pressure the cylinder circuit was designed around, and the automatic drain copes with condensate on a line that runs all shift.
Supplying stoppers, divertors and lifters on a parcel-sort conveyor: the low-pressure type lets the circuit run at the reduced setting these devices need, the check valve stops the supply decaying back through the unit, and the psi gauge gives maintenance a direct reading at the frame.
Regulating filtered air for service-truck tool circuits: the 1/2 in NPT port matches vehicle-mounted pipework, the 5 um grade protects impact tools and air ratchets from moisture and grit, and the automatic drain keeps the bowl clear between jobs without a manual blow-down routine.
Size up by port and flow: GFR400 with its 1/2 in NPT port is the step for lines that have outgrown 1/4 in or 3/8 in units, but confirm the flow curve against your demand before ordering, because the catalogue publishes curves rather than one rated figure. This unit is the low-pressure type, so its adjustment range differs from the standard type and the exact figure is not published in the material we hold - confirm it with us. The 5 um element (code W) suits downstream equipment that needs finer particulate removal than the 40 um standard; the automatic drain keeps the PC bowl clear without manual attention, which matters on lines that run unattended. The round psi gauge gives a direct US-familiar readout, the fitted reverse/check valve holds upstream pressure from back-flowing, and the bracket is included for panel or wall fixing.
Thread is NPT here; PT is the catalogue standard and G (BSPP) is also orderable if your pipework differs. Send us your line pressure, required setpoint and air demand and we will confirm suitability from the datasheet before you commit.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes G-series flow as curves, not as a single rated number, so we do not quote a figure that is not in the catalogue. Send us your line pressure, setpoint and air demand and we will confirm the flow curve and datasheet figures for this exact unit on request before you order.
The A in the code selects the automatic drain: condensate collected in the PC bowl is expelled automatically, so the unit suits installations that run unattended or where manual blow-downs get skipped. The W selects the 5 um element instead of the 40 um standard, for downstream equipment that needs finer particulate removal. Both are order-time choices across the GFR family.
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.