The AirTAC GFR400C15MC3WT AirTAC Filter Regulator NPT1/2 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 GFR400C15MC3WT is an AirTAC GFR400 filter regulator: filtration and pressure regulation combined in a single body. It removes water and particulate from compressed air down to 5 um (the W fine-grade element, versus the 40 um standard) and holds a regulated downstream pressure adjustable from 0.05 to 0.9 MPa (7-130 psi). This configuration is sized for a 1/2 in NPT port, drains by hand via the manual drain, and is supplied with a round pressure gauge reading in bar plus a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). The 400-size bowl on this unit is polycarbonate (PC); only the 600 size uses an aluminium alloy bowl.
This is a genuine AirTAC part from the G-series air-treatment line, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um filter grades, PT, G or NPT threads, and gauge or no-gauge variants. Flow is published as curves rather than a single rating, so we confirm the datasheet and flow figures for your application on request.
| Model | GFR400C15MC3WT AirTAC Filter Regulator NPT1/2 |
|---|---|
| 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) |
On a CNC machining cell, this unit filters the shop air to 5 um and holds a steady regulated pressure to the fixture clamps and tool-change cylinders, with the bar gauge giving the operator a visible setpoint at the machine.
Feeding stoppers, pushers and diverters on a carton packaging conveyor, the GFR400 cleans water and scale out of the supply and keeps actuator pressure consistent shift after shift, with manual drain-down at scheduled stops.
On an automotive sub-assembly line running air cylinders and grippers, this filter regulator conditions the drop at the line, protecting valves from particulate while the regulator keeps cycle pressure where the fixture design calls for it.
Step up or down through the G-series sizes (200, 300, 400, 600) so the port and body size match the flow your line needs - the 400 size with a 1/2 in port sits in the upper-middle of the range. Choose the drain to suit attendance: manual (as here) when an operator can bleed the bowl, automatic or differential-pressure where the unit is tucked away. Pick the 5 um W element when downstream valves or instruments need finer filtration than the 40 um standard. Gauge scale (MPa, psi or bar) and thread (PT standard, G or NPT to order) are decodable choices, and the bracket is included on this unit. 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 flow for the GFR400 as curves, not as a single rated figure, so we do not quote a number that is not in the datasheet. Tell us your line pressure and the flow your application needs, and we will confirm the sizing from the datasheet curves on request before you order.
This unit is coded M for a manual drain: condensate collected in the PC bowl is released by hand. Choose manual where the unit is accessible and drained as part of a routine - for example at shift start or end. If the unit will be mounted where nobody passes regularly, pick the automatic or differential-pressure drain variant instead, noting that the regulator adjustment range differs by drain type: manual-drain units adjust from 0.05 to 0.9 MPa (7-130 psi).
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.