The AirTAC GFR400C15MJNTK 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 GFR400C15MJNTK is a size 400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has a 1/2 in NPT port, a 40 um standard filter element, a manual drain bowl, and a built-in reverse/check valve that holds the downstream circuit if upstream supply is interrupted. The regulator is the standard type with an adjustment range of 0.05-0.9 MPa (7-130 psi), maximum inlet pressure is 1.0 MPa (145 psi), and the operating temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl is drained by hand, so it suits installations where someone checks the bowl as part of routine maintenance. No pressure gauge is fitted and no mounting bracket is included with this code.
This is a genuine AirTAC part from the GFR filter-regulator family, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in up to 1 in. Related codes in the family offer automatic or differential-pressure drains, a 5 um element (code W), gauge options, and G (BSPP) or NPT threads in place of the PT standard. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | GFR400C15MJNTK 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) |
Point-of-use conditioning for the clamping and fixture cylinders on a CNC machining cell: the 40 um element stops scale and pipe debris reaching the clamp valves, while the regulator holds a steady clamp pressure and the check valve keeps the circuit from venting if the main supply drops.
Conditioning the air feeding the stopper, pusher and lift cylinders on a carton packaging conveyor. The 1/2 in port suits the larger line feeding several actuators, the regulator lets the line supervisor set a stable working pressure, and the manual drain is emptied during shift-end checks.
A filter regulator at the air drop serving an assembly bench with air tools and small cylinders: water and rust from the distribution piping are caught in the bowl, tool pressure is set locally on the regulator, and the check valve prevents backflow from the bench into the header.
Step up through the GFR sizes (200, 300, 400, 600) and their port sizes (1/8 in to 1 in) until the port and the flow curve cover your demand - flow is published as curves, not a single rating, so let us check the datasheet against your air consumption before you order. Drain choice matters: manual (this code) needs periodic hand draining, automatic drains on its own, and differential-pressure drains only when the pressure drop across the element is high enough. Element grade is 40 um standard or 5 um (code W) where finer filtration is needed. Gauge options add an embedded square gauge or an external round gauge with MPa, psi or bar scales - this code has none. Thread is PT as the AirTAC standard, with G (BSPP) and NPT (this code) as order options; a bracket can be included or omitted (J), and a reverse/check valve (K) can be fitted as here.
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 rather than a single rated figure, so we do not quote one number. Tell us your working pressure and air consumption and we will confirm the sizing from the datasheet on request before you order.
The M in the code specifies a manual drain: condensate collected in the polycarbonate bowl is released by hand, which suits stations that are checked during routine maintenance. The same GFR400 size is available with an automatic drain (code A) or a differential-pressure drain (blank) - and note that the regulator adjustment range differs by drain type: 0.05-0.9 MPa (7-130 psi) with a manual drain like this unit, 0.15-0.9 MPa (20-130 psi) with automatic or differential-pressure drains.
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.