The AirTAC GFR400C15MLC3WT 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 GFR400 series combines water and particulate filtration with pressure regulation in a single body, and this GFR400C15MLC3WT is the size 400 unit with a 1/2 in NPT thread. It is built as the low-pressure regulator type; the adjustment range for that variant is not published in the catalogue, so tell us your setpoint and we will confirm suitability. Filtration is the 5 um element (code W) instead of the 40 um standard, the polycarbonate bowl drains manually, and a round gauge scaled in bar is fitted. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family runs in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and each size can be ordered with a different drain type, filter grade, gauge style and scale, thread (PT is the standard, with G and NPT as catalogue options) and bracket choice. Flow is published as curves rather than a single rating, so send us your flow requirement and we will confirm sizing and the full datasheet on request.
| Model | GFR400C15MLC3WT 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) |
Filter and regulate the air feeding clamp cylinders on a CNC fixture line: the 5 um element keeps water and fine particles out of the clamp circuit while the regulator holds the clamping pressure set by the operator.
Feed carton sealers and case-packer cylinders from a 1/2 in drop line: the GFR body removes condensate and dirt and sets the working pressure, with the bar-scaled round gauge giving the operator a local pressure reading.
Regulate filtered air to diverters, stoppers and lift gates along a conveyor line, where the low-pressure regulator type and the manual drain suit installations with a scheduled end-of-shift drain routine.
The real choices within GFR400 are the port step (1/2 in here; sizes 200/300 step down and 600 steps up for larger air demand), the drain (manual here, against automatic or differential-pressure), the filter grade (5 um here against the 40 um standard), the gauge (round, bar-scaled here; an embedded square gauge scaled in MPa, psi or bar is the alternative) and the thread (NPT here; PT is the standard and G is also available). A mounting bracket is included. Because AirTAC publishes flow as curves rather than one rated figure, ask us to check the curve for this size against your application before you order.
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 GFR400 flow as curves rather than a single rated figure, so there is no one number we can quote. Tell us your flow and pressure requirement and we will confirm the curve and the full datasheet for this 1/2 in unit on request.
This unit drains through a manual valve on the bowl, so an operator opens it to release collected condensate; it suits lines with a scheduled shutdown routine. If you want the bowl to discharge without operator action, the same size is available with an automatic or differential-pressure drain - ask us and we will quote that variant.
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.