The AirTAC GFR40015MNTK AirTAC Filter Regulator NPT1/2, Manual Drain 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 series combines water and particulate filtration with pressure regulation in a single body, so one unit both cleans the compressed air and holds your downstream pressure at a set point. This GFR40015MNTK is configured with 1/2 in NPT ports, a 40 um standard filter element, a manual drain on the PC bowl, a standard regulator with a 0.05-0.9 MPa (7-130 psi) adjustment range, and a built-in reverse (check) valve that holds downstream pressure if the upstream supply drops. No pressure gauge is fitted on this variant, and the mounting bracket is included.
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600 with a choice of PT, G or NPT threads, manual, automatic or differential-pressure drains, a 5 um element option (code W), gauge options and an optional reverse valve. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR40015MNTK AirTAC Filter Regulator NPT1/2, Manual Drain |
|---|---|
| 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. |
| (blank) | Mounting bracket included. |
| 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) |
Supplying clean, regulated air to the clamp cylinders on a CNC fixture, holding a steady set point so clamping force stays consistent from cycle to cycle, with the check valve holding the clamp if supply pressure dips.
Filtering and regulating the air feeding carton-forming and sealing actuators on a packaging conveyor, keeping water and pipe scale out of the valves while the manual drain lets maintenance empty the bowl at shift checks.
Conditioning the air at the drop to a spray booth so moisture and particulates are removed before the regulator sets the atomising pressure for the gun circuit.
Work from the port step first: this 400-size unit carries 1/2 in ports, and the G-series steps through 200, 300, 400 and 600, so pick the size whose published flow curve covers your demand with margin - we can check the curve against your application before you order. On this unit the drain is manual (code M), meaning the bowl is emptied by hand; if you cannot schedule that, the automatic (A) or differential-pressure (default) drain variants are the alternatives. The 40 um element is the standard grade; specify code W for the 5 um element if finer filtration is needed. This configuration has no gauge (code N) - a gauge can be specified on other variants. Thread here is NPT; PT is the standard thread and G (BSPP) is also a catalogue option, so order the variant matching your pipework. A mounting bracket is included; on GF/GR/GL/GFR, code J removes it.
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 G-series flow as performance curves rather than a single rated figure, so there is no one rated flow number we can quote. Tell us your inlet pressure, set pressure and air demand, and we will confirm the curve figures from the datasheet for your application before you order.
The N in the code means no gauge is fitted on this variant; gauge options are available on other GFR configurations. The M means a manual drain: the PC bowl is emptied by hand at intervals you set. If unattended draining is needed, choose the automatic (A) or differential-pressure (default) drain variants 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.