The AirTAC GFR40010ALC1WTK AirTAC Filter Regulator NPT3/8 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 PT3/8" 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 GFR40010ALC1WTK is a size 400 filter regulator: water and particulate filtration plus pressure regulation combined in one body. This configuration is built with a 3/8 in NPT port, a fine 5 um filter element (code W), an automatic drain that ejects collected condensate without manual attention, and the low-pressure regulator type. It is fitted with an external round pressure gauge scaled in MPa, a reverse/check valve, and a mounting bracket. The polycarbonate bowl lets you see the condensate level at a glance.
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 each size can be ordered with manual, automatic or differential-pressure draining, a 40 um or 5 um element, standard or low-pressure regulation, gauge style and scale, a reverse/check valve, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR40010ALC1WTK AirTAC Filter Regulator NPT3/8 |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (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, MPa 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. |
|---|---|
| 10 | Port size PT3/8". 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. |
| 1 | Gauge scale: MPa. 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 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
Fixture clamps and swing clamps that hold workpieces at reduced supply pressure get filtered air and a stable low setpoint from one body, with the MPa gauge giving the operator a direct read of clamp circuit pressure.
Wide blow-off bars that clear dust and film trim from cartons run best at moderate pressure; the 5 um element protects the narrow slots from particulate while the automatic drain keeps condensate out of the air knives.
Pneumatic actuators moving sample trays and purging analytical enclosures need clean, moisture-free air at a gentle, repeatable pressure - the low-pressure type regulator and fine filtration suit that duty, and the check valve holds the circuit if supply dips.
Start with the size and port: this unit is size 400 with a 3/8 in NPT port, one step up from size 300, and the right choice depends on the air demand of the downstream circuit - we will confirm sizing against the published flow curves before you order. This code carries the 5 um element (W) rather than the 40 um standard, the automatic drain (A) instead of manual or differential-pressure, and the low-pressure regulator type (L), whose exact range is not published - confirm it with us if your setpoint matters. The round gauge (C) at scale 1 reads in MPa; square gauges and psi or bar scales are orderable alternatives. NPT is the thread here; PT (standard) and G are the other catalogue options. A bracket is included, and the K code adds a reverse/check valve.
Because AirTAC publishes flow only as curves and not as a single rating, ask us to confirm the datasheet figures against your application before ordering.
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 flow for the GFR series only as curves, not as a single rated figure, so we do not quote a number that is not in the datasheet. Tell us your downstream air demand and line pressure and we will confirm the flow curves and correct size for your application on request.
The A in the code selects the automatic drain: collected condensate is expelled from the polycarbonate bowl on its own, so the unit suits duty where nobody opens a manual drain regularly. The W code selects the 5 um filter element instead of the 40 um standard, giving finer particulate removal ahead of sensitive valves and actuators. Note this is the low-pressure regulator type, so confirm its adjustment range with us if your setpoint is critical.
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.