The AirTAC GFR400C15MJC3WTK AirTAC Filter Regulator NPT1/2 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 GFR400C15MJC3WTK is a filter regulator: one body that removes water and particulate from compressed air and holds downstream pressure steady. This size 400 unit is threaded NPT1/2, carries the 5 um filter element (code W) for finer protection than the standard 40 um grade, and has a manual drain, so an operator opens the drain periodically to discharge collected condensate. The standard-type regulator adjusts from 0.05-0.9 MPa (7-130 psi), a round pressure gauge scaled in bar is fitted, and a reverse (check) valve is built in. Maximum inlet pressure is 1.0 MPa (145 psi), the polycarbonate bowl suits the non-freezing -5 to 70 C operating range, and the unit is supplied without a mounting bracket.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and options include 40 um or 5 um filtration, differential-pressure, automatic or manual drains, embedded square or external round gauges with MPa, psi or bar scales, G (BSPP) or NPT threads in place of the PT standard, and mounting brackets. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and datasheet figures for your application.
| Model | GFR400C15MJC3WTK AirTAC Filter Regulator NPT1/2 |
|---|---|
| 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) |
Feeds filtered, regulated air to pallet clamps, tool-change cylinders and part-eject actuators on a machining centre, with the 5 um element helping keep fine pilot valves clean.
Sits at the drop feeding stoppers, pushers and diverters on a carton or bottle conveyor line, holding a steady setting while the manual drain is emptied during scheduled stops.
Installed at the wall drop serving impact wrenches, air cylinders and clamping fixtures at an assembly station, with the check valve holding the downstream setting if supply pressure dips.
Size the unit against the air your circuit actually consumes: this is size 400 with a 1/2 in NPT port, a step up from size 300 (3/8 in) and below size 600 (3/4 and 1 in). The 5 um element (code W) suits circuits with sensitive valves or instruments; the standard grade is 40 um. Drain type matters in service: manual (this unit) needs periodic operator attention, automatic drains continuously, and the differential-pressure default discharges on pressure drop. The fitted round gauge reads in bar; an embedded square gauge and MPa or psi scales are alternatives. G (BSPP) and NPT threads are order options against the PT standard, and a bracket can be added where this no-bracket unit needs support. Flow is published as curves, not a single rating - ask us to confirm sizing against your application before ordering.
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 as curves rather than a single rated figure, so there is no one rated flow number we can quote. Send us your operating pressure and air demand and we will confirm sizing from the datasheet on request.
This unit's bowl has a manual drain: an operator opens it periodically to discharge collected water. If you prefer unattended operation, the same family is available with an automatic drain, or with the differential-pressure drain that discharges on pressure drop - both are order options.
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.