The AirTAC GFR400C15MJF1WTK 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 GFR400C15MJF1WTK is a size 400 filter regulator: it removes water and particulate from compressed air and holds a steady downstream pressure in one body. This configuration is built for a 1/2 in NPT port, filters to 5 um for cleaner air than the standard 40 um element, and uses a manual drain you open by hand to empty collected condensate. It is fitted with the embedded square pressure gauge (MPa scale), a reverse/check valve to hold downstream pressure if the supply drops, and ships without a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulator adjusts from 0.05-0.9 MPa (7-130 psi), and the working temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl suits the 400 size; only the 600 size uses an aluminium alloy bowl.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um filtration, gauge scale options, and PT (standard), G or NPT threads. Flow is published as curves rather than a single rating, so we confirm the datasheet figures for your application on request.
| Model | GFR400C15MJF1WTK 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) |
Feeding spray guns and air-assisted applicators in a body shop: the 5 um element strips water and fine particulate that would otherwise blemish finish work, while the regulator holds a steady gun pressure and the manual drain is emptied during shift-end checks.
Ahead of the cylinders and grippers on a carton-forming and sealing line: clean, regulated air keeps pick-and-place motions repeatable through the shift, and the check valve holds the circuit's setting if the plant supply dips.
Supplying power clamps and tool-change actuators on a machining centre: the regulator pins clamp pressure at the set value for consistent holding force, the 5 um grade protects the valve stack, and the square MPa gauge gives the operator a visible setpoint.
Start with the port and size: this unit steps up to size 400 with a 1/2 in NPT port for lines that need more flow than the 300 size, but the right step depends on your demand - flow is published as curves, not a single rating, so ask us to confirm sizing against the application before ordering. The 5 um element (code W) suits air that feeds sensitive valves, cylinders or instruments; choose the standard 40 um grade when coarser protection is enough. The manual drain needs someone to open it periodically - pick an automatic or differential-pressure drain variant for unattended duty. The embedded square gauge reads in MPa; psi and bar scales and an external round gauge are order options. Threads come as PT (standard), G or NPT - this code specifies NPT. A bracket is optional (this configuration omits it), and the reverse/check valve is fitted here to hold downstream pressure on supply loss.
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, not as a single rated figure, so there is no one l/min or SCFM number we can honestly quote. Tell us your working pressure and air demand and we will confirm the sizing from the datasheet curves on request before you order.
The M in the code specifies a manual drain: condensate collects in the polycarbonate bowl and someone opens the drain by hand to empty it, which suits attended lines with regular checks. If the unit will run unattended, order the same GFR400 size with an automatic (A) or differential-pressure drain instead - note that manual-drain regulators adjust from 0.05-0.9 MPa (7-130 psi), while automatic and differential-pressure drain variants adjust from 0.15-0.9 MPa (20-130 psi).
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.