The AirTAC GFR400-10LJC2T 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 PT3/8" 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 GFR400-10LJC2T is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure, all in one body. This size 400 unit has 3/8 in NPT ports, the standard 40 um filter element, a differential-pressure drain, and a low-pressure regulator fitted with a round psi gauge. No mounting bracket is included (code J) and no reverse/check valve is fitted. It runs on compressed air only, from -5 to 70 C (non-freezing), at up to 1.0 MPa (145 psi) inlet.
This is a genuine AirTAC part from the GFR series, offered in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, PT as standard and G or NPT to order. Drain types (differential-pressure, automatic or manual), a finer 5 um element (code W) and gauge scales in MPa, psi or bar are all catalogue options. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR400-10LJC2T AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Low-pressure 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 — round, psi 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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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. |
|---|---|
| 10 | Port size PT3/8". 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)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT 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 · PT3/8" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
Supplying filtered, regulated air at reduced pressure to spray guns and atomising headers, with the 40 um element keeping water and debris out of the finish.
Holding a steady reduced supply to sealing arms and clamp cylinders on a packaging line, with the round psi gauge giving operators a local setpoint readout.
Feeding low-pressure pneumatic test fixtures and clamping rigs where a gentle regulated supply is needed and a psi gauge matches the bench instrumentation.
Pick the size and port step against the air your line actually uses: this unit is size 400 with 3/8 in NPT ports. Where a bowl is fitted, choose the drain - differential-pressure (standard, as here), automatic (code A) for unattended condensate removal, or manual (code M) for occasional service. Filter grade is 40 um standard; specify 5 um (code W) for finer protection of downstream components. The gauge on this unit reads in psi; MPa or bar scales are available. Thread is NPT here (PT is the standard variant, G is also orderable), and a bracket can be added since code J omits it. Flow 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 filter-regulator flow as curves rather than a single rated figure, so we do not quote a number here. Send us your line pressure and air demand and we will confirm the datasheet flow figures for this size 400, 3/8 in unit on request.
L marks the low-pressure regulator type: this unit regulates at reduced setpoints rather than the standard range. The exact low-pressure adjust range is not published in the catalogue, so ask us to confirm the figure for your setpoint before ordering.
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.