The AirTAC GFR400C15LF2W AirTAC Filter Regulator PT1/2 Low-Pressure 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 GFR400C15LF2W is a size 400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is the low-pressure type, fitted with a 5 um filter element (code W) for finer filtration than the standard 40 um grade, a differential-pressure drain that bleeds accumulated condensate automatically whenever the pressure differential across the element is high enough, and an embedded square gauge reading in psi so the set pressure is visible at a glance. The port is PT1/2 (1/2 in PT thread), a mounting bracket is included, and the maximum inlet pressure is 1.0 MPa (145 psi) with an operating temperature of -5 to 70 C (non-freezing). The polycarbonate bowl suits this size in the catalogue range.
This is a genuine AirTAC part. The GFR series is published in sizes 200, 300, 400 and 600, with port options from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drain, 40 um standard or 5 um (W) filtration, standard or low-pressure regulation, square (embedded) or round (external) gauges in MPa, psi or bar scales, an optional reverse/check valve, and PT, G (BSPP) or NPT threads. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | GFR400C15LF2W AirTAC Filter Regulator PT1/2 Low-Pressure |
|---|---|
| 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 spray line, the 5 um element strips water and fine particulate that would otherwise cause fisheyes in the finish, while the low-pressure regulator holds the gentle, stable supply pressure that spray guns and air-assisted applicators need at the booth.
On a cartoning or wrapping machine, this unit feeds the sealing jaws and product-push cylinders from a 1/2 in ring main: filtered, regulated air at a low set pressure, with the psi square gauge letting operators verify the setting during changeover.
For pneumatic clamps and workholding fixtures that must not crush delicate parts, the low-pressure type regulator sets a gentle holding pressure, the 5 um grade protects the clamp valves from fine contamination, and the differential-pressure drain keeps condensate out of the circuit.
Choose the size 400 / PT1/2 step when your line runs 1/2 in piping and you want filtration and regulation combined in one body instead of a separate filter and regulator. This unit is the low-pressure type, so it suits circuits that hold a lower set pressure than a standard GFR; the exact adjustment range for the low-pressure type is not published as a single figure, so confirm it with us against your setpoint before ordering. The 5 um element (W) is the right pick when downstream valves, cylinders or instruments need finer filtration than the standard 40 um grade; note that finer elements load faster, which is where the differential-pressure drain helps by clearing condensate as the differential rises. The square gauge is fitted here reading in psi; an external round gauge in MPa, psi or bar is available if you prefer. Thread is PT as standard, with G (BSPP) and NPT as order options, and a mounting bracket is included. Flow for the GFR 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, not as a single rated figure, so we do not quote a number here. Tell us your inlet pressure, set pressure and the flow your application needs, and we will confirm the sizing from the datasheet on request before you order.
The W code in GFR400C15LF2W selects the 5 um filter grade instead of the 40 um standard, giving finer removal of water and particulate for sensitive downstream equipment. The L code makes it the low-pressure regulator type rather than standard; its exact adjustment range is not published as a single figure, so confirm it with us against your setpoint. The unit also carries a square gauge reading in psi, a differential-pressure drain, and a PT1/2 port as standard.
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.