The AirTAC GFR400C10ALJC3T AirTAC Filter Regulator NPT 3/8 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 GFR400C10ALJC3T 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 fitted with a 3/8 in NPT port, an automatic drain that expels collected condensate without manual attention, and the standard 40 um filter element. It is the low-pressure type, and a round gauge scaled in bar is included so the set pressure can be read at a glance. 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 series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of automatic, manual or differential-pressure drains, an optional 5 um element, square or round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm sizing or any datasheet figure for your application before ordering.
| Model | GFR400C10ALJC3T AirTAC Filter Regulator NPT 3/8 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) |
A low-pressure clamping circuit on a CNC fixture needs clean, regulated air holding the part without over-clamping. This filter regulator conditions the supply and sets the clamp pressure, with the bar gauge giving the operator a visible setpoint.
Individual stations on a packaging line often run at reduced pressure. Feeding each station through this unit removes water and pipe scale from the shop air and lets the setter dial in the station pressure, while the automatic drain keeps condensate off the valves.
Bench-top test rigs and pilot rigs supplied from a shop compressor need particulate-free air at a stable, modest pressure. This low-pressure filter regulator on the rig inlet provides both, with the round gauge letting the technician verify the setting before each run.
Start with the port step: this unit is size 400 with a 3/8 in NPT thread; step up or down a size if your line runs larger or smaller ports. Because this is the low-pressure type, it suits circuits set below the standard regulator range - ask us to confirm the exact adjustment range for your setpoint. The automatic drain suits unattended duty; choose manual drain (code M) for intermittent inspection routines or differential-pressure drain as the default. The 40 um element is standard; specify 5 um (code W) if finer particulate protection is needed. The round bar gauge is fitted here; square embedded gauges with MPa, psi or bar scales are alternatives, and PT or G threads can be ordered instead of NPT. Flow is published as curves, not a single rating, so send us your application details 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 GFR400 as curves rather than a single rated figure, so we do not quote a number. Tell us your application and we will confirm the flow from the datasheet curves on request before you order.
The A in the code means the bowl drains collected condensate automatically, which suits unattended or continuously running equipment. If your maintenance routine includes regular bowl checks, a manual drain (code M) or the differential-pressure drain (the default) can be ordered instead on the same size 400 body.
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.