The AirTAC GFR400-15 AirTAC Filter Regulator 1/2 in NPT 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 GFR400-15 is an AirTAC filter regulator: water and particulate filtration plus pressure regulation combined in a single body, with no lubricator. This 400-size unit is configured with 1/2 in NPT ports, the standard 40 um filtration element, and a manual drain bowl in polycarbonate (only size 600 uses an aluminium alloy bowl). The standard regulator adjusts from 0.05 to 0.9 MPa (7-130 psi) with manual drain, maximum inlet pressure is 1.0 MPa (145 psi), and the operating temperature range is -5 to 70 C (non-freezing). A square gauge with a psi scale is fitted as standard, and no mounting bracket is included with this code.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port options in PT, G (BSPP) and NPT, differential-pressure, automatic or manual drains, an optional 5 um element (code W), gauge scales in MPa, psi or bar, and optional brackets. Flow figures for this series are published as curves rather than a single rated number, so ask us to confirm the datasheet and sizing for your application on request.
| Model | GFR400-15 AirTAC Filter Regulator 1/2 in NPT |
|---|---|
| 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 | Fitted — square, psi 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 0.05 - 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. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 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. |
| (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" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Mounted at the drop feeding a packaging line's conveyor-mounted pneumatic cylinders, the GFR400-15 removes water and particulate from the shop air and holds a steady regulated pressure so box-clamp and pusher cylinders cycle consistently through the shift. The manual drain is bled during scheduled line checks.
Installed ahead of pneumatic control valve positioners on a process skid, this unit filters moisture and debris out of the instrument air and regulates it to the pressure the positioner expects, with the fitted square psi gauge giving operators a local reading at the drop.
Fitted at the header take-off for an assembly cell's impact drivers and nutrunners, the GFR400-15 cleans the compressed air and regulates it to the tool manufacturer's stated supply pressure, protecting the tools from moisture carryover and pressure swings on a 1/2 in NPT drop.
Choose the size and port step against the air demand of your circuit: the 400 size carries 1/2 in ports, and larger sizes move more flow. Decide the drain type where it applies - manual drain (this code) suits positions where an operator can bleed the bowl; automatic or differential-pressure drains suit unattended installations. Filter grade is 40 um as standard; specify the W option for 5 um when downstream equipment needs finer filtration. Gauge scale (MPa, psi or bar), thread (PT standard, with G and NPT as order options) and bracket inclusion are all decodable choices. Flow for this 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 rated flow number for this unit. Tell us your application and required flow, and we will confirm the sizing against the datasheet curves on request before you order.
The M in GFR40015MJF2T specifies a manual drain bowl. A manual drain suits installations where an operator can bleed accumulated condensate during routine checks. If the unit will sit in an unattended position, ask us about the automatic or differential-pressure drain variants of the same size instead.
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.