The AirTAC GFR400C10LC3T 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 AirTAC GFR400C10LC3T 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 decoded as a 3/8 in NPT port, the standard 40 um filter element, a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the element is high enough, and a low-pressure regulator type for circuits held at reduced working pressure. A round gauge on a bar scale is fitted so the set pressure can be read directly, and a mounting bracket is included for panel or wall fixing. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part from the GFR filter-regulator family, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drains, a 5 um element option, gauge and thread options, and standard or low-pressure regulator types. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR400C10LC3T 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) |
Hot-melt and cold-glue applicators on packaging machines run best at a held, reduced pressure. This filter regulator cleans the shop air feeding the applicator pumps and holds the low setpoint the glue heads need, with the bar-scale round gauge giving the operator a direct read of the setting.
Weld fixtures use air clamps that must close with a repeatable, moderate force so parts are held without distortion. Feeding the clamp circuit through this unit removes water and pipe scale that would score seal surfaces and lets the integrator set and read the exact clamp pressure.
Conveyor diverters, stoppers and pushers on a bottling line cycle continuously on 3/8 in air supplies. This unit conditions the air at the line drop and regulates it to the pressure the cylinder manufacturer specifies, while the differential-pressure drain keeps condensate from carrying downstream into the valves.
Start with the port step: size 400 with a 3/8 in NPT port suits lines plumbed at 3/8 in; step up to size 600 or down to 300/200 if your piping or expected air demand differs. Because flow is published as curves and not as a single rated figure, ask us to confirm sizing against your application before ordering. The 40 um element is the standard grade and is right for general cylinder and valve protection; specify the 5 um (W) option if downstream equipment needs finer filtration. The differential-pressure drain used here needs no operator attention, but if the unit will sit where automatic bleeding is unsuitable, a manual-drain variant is available. This is the low-pressure regulator type, chosen where the circuit is held well below full line pressure; the exact regulation span for the low-pressure type is not published, so confirm it with us. The fitted round gauge reads in bar; square embedded gauges and MPa or psi scales are the other catalogue choices. NPT is the thread ordered here; PT (standard) and G (BSPP) are the other options. A mounting bracket is included.
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 number, so we do not quote a figure here. Tell us your application and we will confirm the flow and sizing data from the datasheet on request before you order.
The L in the code marks the low-pressure regulator type, intended for circuits held at reduced working pressure rather than near full line pressure; the exact regulation span for the low-pressure type is not published, so confirm it with us. The C3 in the code means a round gauge on a bar scale is fitted, so the set pressure can be read directly at the unit.
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.