The AirTAC GFR40010JC3WTK AirTAC Filter Regulator NPT3/8 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 PT3/8" 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 GFR40010JC3WTK is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single body. This size 400 unit is threaded NPT3/8, carries a 5 um filter element (code W), drains condensate automatically by differential pressure, and is fitted with a round pressure gauge reading in bar. A reverse/check valve is included, the polycarbonate bowl suits the non-400-600 size range, and the unit is supplied without a mounting bracket.
This is a genuine AirTAC part from the GFR400 series, one of four sizes (200/300/400/600) covering ports from 1/8 to 1 inch with PT, G or NPT thread options. Maximum inlet pressure is 1.0 MPa (145 psi), the regulation range for this differential-pressure drain configuration is 0.15-0.9 MPa (20-130 psi), and the operating temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR40010JC3WTK AirTAC Filter Regulator NPT3/8 5 um |
|---|---|
| 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 | 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 — round, bar 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. 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. |
|---|---|
| 10 | Port size PT3/8". 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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 3 | Gauge scale: bar. 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) |
Clean, regulated air for the tool-clamp and chip-clearing circuits of a CNC machining center, with the 5 um element protecting directional valves from fine particulate.
Feeding pneumatic pushers and clamp cylinders on a packaging or labeling conveyor, where the regulator holds a steady setting as line demand fluctuates through the shift.
Point-of-use conditioning for pneumatic hand tools and air cylinders at an assembly plant bench, with the check valve holding downstream pressure if upstream supply dips.
Size and port set the capacity: the GFR400 with its 3/8 in port sits mid-range in the GFR series, so step up to size 600 or down to 300 depending on the air demand of the circuit. Choose the 40 um standard element for general plant air or the 5 um element (this unit, code W) where downstream valves and cylinders need finer filtration. Drain type is a real choice: differential-pressure drains with flow (this unit), automatic drains without intervention, and manual drains give the widest 0.05-0.9 MPa regulation range. Gauge scale (MPa, psi or bar - this unit is bar) and thread (PT standard, G or NPT to order) should match the rest of your installation.
Flow for this family is published as curves, not a single rated figure, so send us your application details and we will confirm sizing against the datasheet before you order.
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 GFR400 series as curves rather than a single rated figure, so no single number is quoted here. Send us your application details and we will confirm the datasheet flow figures and check the sizing against your air demand before you order.
The W in the code specifies the optional 5 um filter element instead of the 40 um standard, for finer protection of downstream components. The K specifies a reverse/check valve, which helps hold the regulated downstream pressure if the upstream supply is interrupted. Both are decodable from the model code itself.
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.