The AirTAC GFR400C10JF3WTK 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 body, so one 3/8 in unit both cleans the compressed air and holds your downstream pressure steady. This configuration, GFR400C10JF3WTK, is the size 400 filter regulator with an NPT3/8 port, a fine 5 um filter element (code W), a differential-pressure drain that bleeds accumulated condensate automatically whenever the pressure drop across the element rises, a fitted square gauge reading in bar, a standard regulator with an adjustment range of 0.15-0.9 MPa (20-130 psi), and a built-in reverse/check valve (code K) that holds downstream pressure if the upstream supply is lost. It is ordered without a mounting bracket (code J). 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. The GFR family is published in sizes 200, 300, 400 and 600, with port sizes from 1/8 in to 1 in, a choice of 40 um standard or 5 um fine filtration, differential-pressure, automatic or manual drains, gauge and scale options, G (BSPP) and NPT thread variants, and bracket choices. Flow for this series 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 | GFR400C10JF3WTK 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) |
Feeding a pneumatic press or clamping fixture on a stamping line: the 5 um element keeps scale and pipe debris out of the press valves, the regulator holds a steady working pressure stroke after stroke, and the check valve keeps the press from losing its held position if the shop air drops.
Conditioning the supply to a valve manifold on a form-fill-seal or cartoning machine: clean, dry-ish air at a set pressure protects the solenoid valves and air cylinders, and the differential-pressure drain clears condensate without an operator stopping the line.
A wall- or ceiling-mounted service drop in a plant workshop where technicians hook up impact wrenches, air chisels and blow guns: the regulator lets each station set its own safe pressure, the 5 um grade protects the tools, and the bar gauge gives a clear local reading.
Start with the port and size step: size 400 with a 3/8 in port sits in the middle of the GFR range (sizes 200 to 600, ports 1/8 in to 1 in), so match the step to the air demand of the circuit it feeds - if your machine draws more than a 3/8 in line can carry, step up to size 600. This unit carries the W code, meaning the fine 5 um element rather than the 40 um standard; choose 5 um where downstream valves, cylinders or instruments need cleaner air, and 40 um where coarse protection is enough. The differential-pressure drain is the default and needs no operator attention; an automatic drain (code A) drains continuously and a manual drain (code M) needs someone to open it. The square gauge here reads in bar; MPa and psi scales are also available, and an external round gauge is an option. Thread is NPT on this unit, with PT (the standard) and G (BSPP) as order options, and the J code means no mounting bracket is fitted - add one if the unit will not hang on the pipework. Because flow is published as curves rather than a single rating, 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. 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 series as characteristic curves, not as a single rated figure, so there is no one SCFM or l/min number we can honestly quote. Tell us your application and operating pressure and we will confirm the datasheet flow figures for this size 400, 3/8 in unit on request before you order.
The W in the code selects the optional fine 5 um filter element instead of the 40 um standard, which suits circuits feeding valves, cylinders or instruments that tolerate less dirt and water carryover. The K code means a reverse/check valve is fitted, so downstream pressure is held if the upstream supply fails. Other choices - drain type, gauge scale, thread (PT standard, G or NPT) and bracket - can be specified when ordering.
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.