The AirTAC GFR40015MJNWT AirTAC Filter Regulator NPT1/2 is a genuine G-series filter regulator: water separation, 5 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 GFR40015MJNWT is an AirTAC GFR400 filter regulator: filtration and pressure regulation combined in a single body. It removes water and particulate from compressed air and holds downstream pressure at your setpoint, with a 1/2 in NPT port for the supply line. This configuration is fitted with a 5 um filter element (the finer of the two catalogue grades), a manual drain you operate by hand to purge collected condensate, and no gauge - it is supplied without one. Maximum inlet pressure is 1.0 MPa (145 psi), the regulation range with manual drain is 0.05-0.9 MPa (7-130 psi), and the operating 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. The GFR filter-regulator family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and options that include automatic, manual or differential-pressure drains, a 40 um standard or 5 um fine element, gauge choices, a reverse/check valve and PT, G or NPT threads. Flow for this series is published as curves rather than a single rated figure, so we confirm the datasheet and flow figures for your application on request.
| Model | GFR40015MJNWT AirTAC Filter Regulator NPT1/2 |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 5 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 | 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 0.05 - 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. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT 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 · PT1/2" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Drops feeding a packaging hall's case sealers and wrappers get filtered air and a stable regulated pressure from one body, with the 5 um element protecting the downstream valves from fine contamination.
On a bottling or carton conveyor line, the regulator holds consistent pressure to the stopper and pusher cylinders so indexing stays repeatable, while the bowl strips condensate carried in from the ring main.
A laboratory automation or test-rig skid drawing plant air uses the 5 um grade and a set pressure at the manifold, with manual drain purging scheduled into the maintenance routine.
Size 400 with a 1/2 in NPT port sits in the upper half of the GFR range - step up to 600 or down to 300 depending on the flow your line needs. The 5 um element here is the right choice when downstream valves, cylinders or instruments are sensitive to fine particulate; the 40 um standard grade suits general supply. The manual drain means an operator or maintenance round purges the bowl - choose automatic drain if the unit sits where nobody regularly walks past. No gauge is fitted in this code; gauges are available with MPa, psi or bar scales if you want a local setpoint reading. PT is the standard thread; G (BSPP) and NPT are catalogue options ordered by suffix - this unit is the NPT version. A bracket is optional (this code omits it). Flow for the GFR series is published as curves, not a single rating, so 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 GFR series as curves rather than a single rated figure, so we do not quote a l/min, m3/h or SCFM number. Send us your inlet pressure, set pressure and expected air demand and we will confirm the flow figures from the datasheet for this exact model before you order.
The M in the code selects a manual drain: condensate is purged by operating the drain by hand, which suits positions covered by a maintenance round; automatic and differential-pressure drains are available on other codes. The N selects no gauge, so no pressure gauge is supplied - gauges with MPa, psi or bar scales can be ordered on gauge-equipped variants.
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.