The AirTAC GFR400C15AJF1WTK AirTAC Filter Regulator NPT1/2 5um 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 GFR400C15AJF1WTK is an AirTAC GFR400 filter regulator, a single-body unit that removes water and particulate from compressed air and regulates downstream pressure in one pass. This configuration is built for 1/2 in NPT ports, filters to 5 um for finer protection of downstream equipment, drains condensate automatically, and carries an embedded square pressure gauge scaled in MPa. A reverse/check valve is fitted, and the unit is supplied without a mounting bracket.
This is a genuine AirTAC part in the GFR400 size class, one of four sizes (200/300/400/600) with port options from 1/8 in to 1 in and optional G (BSPP) or NPT threads in place of the PT standard. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulation range for this drain type 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 rated figure, so ask us to confirm datasheet and sizing figures for your application.
| Model | GFR400C15AJF1WTK AirTAC Filter Regulator NPT1/2 5um |
|---|---|
| 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) |
Installed on the 1/2 in supply feeding a pneumatic press station, it filters machining moisture and scale to 5 um and holds a set working pressure for the press cylinders, with automatic condensate draining between shifts.
Mounted at the drop feeding conveyor diverters and gate actuators on a packaging line, it delivers clean, regulated air so actuator speed stays consistent, while the check valve keeps the circuit charged during brief upstream losses.
Used ahead of solenoid valves and small actuators on laboratory automation equipment, the 5 um grade protects fine valve internals and the automatic drain keeps condensate off the instrument air circuit without operator attention.
Size 400 with 1/2 in NPT ports suits lines with substantial air demand; step down to 200/300 or up to 600 if your flow curve and port size differ. The 5 um element (code W) is the finer choice over the 40 um standard when protecting precision valves, cylinders or instruments. The automatic drain (code A) discharges condensate without manual attention - choose manual or differential-pressure drain variants if your duty or access differs. The fitted square gauge reads in MPa; psi and bar scales and an external round gauge are order options. NPT is this code's thread; G (BSPP) and PT versions exist in the same series. A mounting bracket is not included with this code (J), and the reverse/check valve (K) holds downstream pressure on upstream supply loss.
Flow for this series is published as curves, not a single rated number, so we do not quote a rated flow figure. Send us your application details and we will confirm sizing against the datasheet curves 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 GFR400 series as curves, not as a single rated figure, so we do not state a rated flow, Cv or SCFM number. Tell us your application's flow and pressure requirements and we will confirm the sizing against the datasheet curves on request before you order.
The A in the code GFR400C15AJF1WTK selects the automatic drain, which discharges collected condensate without manual intervention; manual and differential-pressure drain variants are available in the same series. The W selects the 5 um element instead of the 40 um standard, for finer protection of downstream valves, cylinders and instruments.
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.