The AirTAC GFR40015MJNTK 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 PT1/2" ports, a manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR400-15 is a size-400 filter regulator: it removes water and particulate from compressed air and sets downstream pressure in one body. This configuration has 1/2 in NPT ports, a 40 um standard filter element, a manual drain bowl in polycarbonate, a built-in reverse/check valve that holds downstream pressure when the supply drops, and no gauge fitted. The standard regulator covers 0.05-0.9 MPa (7-130 psi) of setting range, with a maximum inlet pressure of 1.0 MPa (145 psi) and an operating temperature of -5 to 70 C (non-freezing).
This is a genuine AirTAC part from the GFR400 series. The GFR line spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, and options including automatic or differential-pressure drains, a 5 um element (code W), a square embedded gauge or an external round gauge in MPa, psi or bar scales, 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 figures for your application before ordering.
| Model | GFR40015MJNTK AirTAC Filter Regulator NPT1/2 |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual drain |
| Bowl material | PC |
| Pressure gauge | Not fitted |
| Reflux valve | Fitted (reverse flow permitted) |
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 0.05 - 0.9 MPa (7 - 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. |
|---|---|
| 15 | Port size PT1/2". This body offers 10 = PT3/8", 15 = PT1/2". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| N | No pressure gauge (N). |
| (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. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Feeding filtered, regulated air to a bench or C-frame pneumatic press on a 1/2 in drop, where the check valve holds the set pressure if the header sags mid-stroke.
Conditioning the air supply to conveyor stopper cylinders and carton-clamp actuators, with the 40 um element keeping scale and pipe debris out of the valves.
A point-of-use filter regulator at a CNC machine's air inlet, giving maintenance staff a manual drain point on a line that is checked during scheduled shutdowns.
Size 400 with 1/2 in ports suits lines where larger supply piping is already in place; step down to GFR200 or GFR300 for smaller circuits or up to GFR600 for higher-flow headers, matching the port step to the pipe and the flow curve rather than a single rating. The 40 um element is the standard choice for general plant air; specify the 5 um W-code element where finer protection is needed downstream. The manual drain on this unit means an operator opens the bowl drain at intervals - choose an automatic (A) or differential-pressure drain if the unit sits where regular attention is impractical. The fitted check valve (K) keeps the downstream circuit pressurised during supply dips; omit it where that behaviour is not wanted. No gauge is fitted with this code, so add a gauge if operators need to read the setting, and choose G (BSPP) or NPT thread at order time - PT is the catalogue standard. No bracket is included with the J code. Because 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. The reflux valve permits reverse flow 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 quote a rated l/min or SCFM number. Tell us your application and we will confirm the relevant datasheet figures on request before you order.
The M code in GFR40015MJNTK specifies a manual drain: accumulated condensate is released by opening the bowl drain by hand at intervals. If the unit will be installed where regular attention is not practical, order the A (automatic) code instead, or the default differential-pressure drain, and the regulator setting range changes accordingly - manual-drain units cover 0.05-0.9 MPa (7-130 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.