The AirTAC GFR400C10LF3T AirTAC Filter Regulator NPT3/8 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 GFR400C10LF3T is an AirTAC GFR-series filter regulator: water and particulate filtration plus downstream pressure regulation combined in a single body. This size 400 unit has NPT 3/8 ports, a 40 um standard filter element and a differential-pressure drain that empties the bowl when the pressure differential across the element drops, such as at shutdown. The regulator is the low-pressure type, a square gauge with a bar scale is fitted, and a mounting bracket is included. The polycarbonate bowl is the standard material at this size, and the unit handles non-freezing compressed air from -5 to 70 C at up to 1.0 MPa (145 psi) inlet.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in up to 1 in, and options across the range include manual or automatic drains, a 5 um element (code W), gauge scales in MPa, psi or bar, and G (BSPP) or NPT threads alongside the PT standard. Flow for this series is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR400C10LF3T AirTAC Filter Regulator NPT3/8 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) |
Point-of-use conditioning for carton-sealing and wrapping machines: the filter stage strips water and pipe scale before they reach the seal cylinders, while the low-pressure regulator holds a steady, gentle supply to the wrap-tension circuit.
Feeding spray guns on a finishing line: the 40 um element catches condensate and particulate that would spoil a finish, and the low-pressure regulator type suits circuits that run at modest settings rather than full line pressure.
Bench-mounted air supply for light assembly clamps and small presses: the square bar-scale gauge gives operators a local pressure readout, and the differential-pressure drain keeps the bowl clear without a manual draining routine every shift.
Choose the size by port and required flow: size 400 with 3/8 in ports sits in the middle of the GFR range, which steps from 1/8 in (size 200) up to 1 in (size 600). Pick the drain to suit your maintenance routine: differential-pressure (this unit) drains at shutdown, automatic (code A) drains continuously, and manual (code M) is drained by hand. The 40 um element is standard; specify W for the 5 um grade where finer particulate removal is needed. Gauge scale is selectable as MPa, psi or bar, and this unit carries the embedded square gauge with a bar scale. Thread here is NPT, with PT as the catalogue standard and G (BSPP) also available, and a mounting bracket is included. Because flow is published as curves rather than a single rated figure, send us your pressure and air demand and we will confirm sizing against the datasheet 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 flow for the GFR series as curves rather than a single rated figure, so there is no one l/min or SCFM number we can quote. Tell us your working pressure and air demand and we will confirm the sizing from the datasheet on request.
The L in the code marks the low-pressure regulator variant rather than the standard type. Its exact setting range is not published in the material we hold, so ask us to confirm the adjustment range for your circuit. Everything else decodes as standard: NPT 3/8 ports, 40 um element, differential-pressure drain, square bar-scale gauge and included bracket.
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.