The AirTAC GFR400C15MLJF1TK AirTAC Filter Regulator NPT1/2 Low-Pressure 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 GFR400C15MLJF1TK is an AirTAC GFR400 filter regulator: water and particulate filtration plus pressure regulation combined in a single body, with a 1/2 in NPT port on the size-400 housing. This configuration carries a metal bowl with a manual drain (you open the drain valve yourself to expel collected condensate), a 40 um standard filter element, an embedded square pressure gauge scaled in MPa, and a built-in reverse (check) valve that blocks backflow toward the supply line. It is the low-pressure regulator type for circuits set lower than the standard band; the exact adjustment range is not published, so confirm it with us. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature is -5 to 70 C (non-freezing). No mounting bracket is included.
This is a genuine AirTAC part. The G-series filter regulator line spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and options including automatic or differential-pressure drains, a 5 um element (code W), gauge scales in psi or bar, and G or NPT threads in place of the PT standard. Flow for this family is published as curves rather than a single rated figure, so ask us to confirm sizing and datasheet values for your application before ordering.
| Model | GFR400C15MLJF1TK AirTAC Filter Regulator NPT1/2 Low-Pressure |
|---|---|
| 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 clamp fixture that closes at a reduced set pressure: the 40 um element strips water and line debris from the shop air, the low-pressure regulator holds the fixture's set point, and the built-in check valve blocks backflow toward the supply.
Conditioning air for the cylinders on a carton-sealing conveyor: one body removes condensate and particulate and regulates pressure to the actuator circuit, with the square MPa gauge giving operators a clear set-point reference at the machine.
Supplying clean, regulated low-pressure air to spray or coating equipment that runs below standard regulator settings, where the manual drain suits a station that is attended at the start of each shift.
Choose the size by port and flow: the G-series steps from 200 to 600 (1/8 in to 1 in), and the right size is the one whose published flow curve covers your demand with margin - this unit is size 400 with a 1/2 in NPT port. Drain type is a real choice: this model is manual (code M), which suits attended stations; automatic (A) and differential-pressure (blank) versions drain themselves if no routine is guaranteed. Filter grade is 40 um standard, or 5 um with code W where finer protection is needed. The embedded square gauge is standard (external round gauge optional) with MPa, psi or bar scales - this unit reads MPa. Thread: PT is the AirTAC standard, with G and NPT as order options; this unit is NPT. Code J means no mounting bracket. Flow is published as curves, not a single rating, so send us your demand 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 this family as curves, not as a single rated figure, so we do not quote a number here. Tell us your line demand and we will confirm sizing against the datasheet on request.
The M in the code means the bowl drains only when someone opens the drain valve, which suits attended stations. Automatic (A) and differential-pressure (blank) drain versions are available in the same GFR family if you cannot guarantee a drain routine.
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.