The AirTAC GFR400C15MNTK | AirTAC Filter Regulator NPT 1/2 in 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 GFR400C15MNTK is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 400 unit has a 1/2 in NPT port, a polycarbonate bowl with manual drain, a 40 um standard filter element, and a built-in check valve that helps hold downstream pressure if the upstream supply dips. No gauge is fitted. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulator adjusts from 0.05 to 0.9 MPa (7-130 psi), and the operating temperature range is -5 to 70 C (non-freezing). A mounting bracket is included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options include a 5 um element (code W), automatic or differential-pressure drain, embedded square or external round gauges with MPa, psi or bar scales, and G (BSPP) or NPT threads to order. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR400C15MNTK | AirTAC Filter Regulator NPT 1/2 in |
|---|---|
| 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 air preparation ahead of a machining center's solenoid valve stack: water and particulate are stripped from the shop air line and the pressure is set for clamps and tool-change actuators, while the built-in check valve helps hold the set pressure through upstream supply dips.
Regulated, filtered air for gripper and pusher cylinders on a bottling or packaging conveyor. The manual-drain bowl fits a line with scheduled maintenance rounds where an operator drains bowls at each shift check.
A filter regulator feeding direction valves and other pneumatic components inside a machine control skid or panel. The included mounting bracket suits backplate mounting, and the 40 um element protects downstream valves from pipework debris.
Every choice in this configuration is decodable from the code. Size 400 with a 1/2 in NPT port is the larger mid-range step; move up or down the 200/300/400/600 ladder against the flow your line needs, and we can confirm curve figures on request. Drain: this unit is manual (code M), so the bowl is emptied during maintenance rounds; automatic (A) or the default differential-pressure drain suit unattended installations. Filter grade: the 40 um standard element covers general plant air; specify W for the 5 um element where finer protection is required. Gauge: this configuration comes without a gauge (code N); gauge variants add an embedded square or external round gauge with MPa, psi or bar scale. Thread: PT is the AirTAC standard, with G (BSPP) and NPT as order options - this unit is NPT. A mounting bracket is included. Because flow is published as curves rather than 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. Without the K option, air cannot flow back 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 we do not quote a number here. Send us your application details - required downstream pressure and approximate air demand - and we will confirm the flow data from the datasheet for this size 400, 1/2 in NPT unit before you order.
Code M means the polycarbonate bowl is drained by hand during maintenance rounds, which suits attended installations with regular checks; manual-drain units adjust from 0.05 to 0.9 MPa (7-130 psi). If the unit will run unattended, the same series offers an automatic drain (code A, 0.15-0.9 MPa adjustment) or the default differential-pressure drain.
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.