The AirTAC GFR400C10ALJC2WTK AirTAC Filter Regulator NPT3/8 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 GFR400 series combines water and particulate filtration with pressure regulation in a single filter-regulator body, so one component cleans the air and sets the working pressure downstream. This configuration is the 400 size with a 3/8 in NPT port, fitted with the fine 5 um filter element (code W), an automatic drain that bleeds collected condensate from the bowl without manual attention, and the low-pressure regulator type for circuits that run below standard regulating ranges. It carries a round external pressure gauge scaled in psi, a reverse/check valve to hold downstream pressure, and no mounting bracket. The bowl on this 400 size is polycarbonate.
This is a genuine AirTAC part. The GFR family spans the 200, 300, 400 and 600 sizes with port sizes from 1/8 in up to 1 in, and options for drain type, filter grade, gauge style and scale, thread form (PT standard, with G and NPT as order options), bracket and reverse valve. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR400C10ALJC2WTK AirTAC Filter Regulator NPT3/8 |
|---|---|
| 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 CNC fixture line, this unit filters chips-laden shop air down to 5 um before it reaches the clamping cylinders, regulates the circuit at the low pressure the clamps require, and the check valve holds clamp pressure if the supply dips. The automatic drain suits a cabinet-mounted install.
Packaging machines run many small valves and actuators sensitive to water and debris. A 3/8 in filter-regulator at the machine inlet cleans and sets the supply, the psi gauge gives operators a readable setpoint, and automatic draining keeps condensate off the valve bank without daily checks.
Lab automation and analytical sampling panels need clean, steady, low-pressure air. The 5 um element protects sensitive pneumatic components, the low-pressure regulator type matches the gentle setpoints these circuits run at, and the automatic drain keeps the unit maintenance-light.
Start with the port step: this unit is the 400 size with a 3/8 in NPT port, one step up from 1/4 in, so size up if your line sees more air demand and down if the circuit is light. Choose the drain to match access: automatic drain (this unit) suits enclosed or infrequently visited installations, manual drain suits attended stations, and the differential-pressure default drains on pressure drop. Pick the 5 um element (code W) when downstream valves, cylinders or instruments need finer filtration than the 40 um standard. Gauge scale is selectable: MPa, psi (this unit) or bar, with the round external gauge shown here or the embedded square gauge as standard. Thread is PT as the catalogue standard, with G (BSPP) and NPT order options. Brackets are optional where panel fixing is preferred.
One honest note on sizing: AirTAC publishes flow for this family as curves, not as a single rated figure, so we cannot quote a rated flow number. Send us your application details and we will confirm the curve-based sizing and datasheet figures before you order.
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 family as performance curves, not as a single rated figure, so we do not quote a rated flow number. Tell us your application - working pressure, downstream consumption and line length - and we will confirm the sizing against the datasheet curves for you before you order.
W is the filter-grade code: it selects the fine 5 um element instead of the 40 um standard, for protecting valves, cylinders and instruments that need cleaner air. The A in the code selects the automatic drain, which expels collected condensate from the bowl on its own - the right choice where the unit is mounted in an enclosed or hard-to-reach spot. Both are order options on the GFR400 series, alongside gauge scale and thread form.
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.