The AirTAC GFR40015LJC3T AirTAC Filter Regulator NPT1/2 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 PT1/2" 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 GFR40015LJC3T is an AirTAC GFR-series filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This size 400 unit is built with a 1/2 in NPT port, the low-pressure regulator type, and 40 um standard filtration. The differential-pressure drain handles condensate automatically as pressure differentials change, and the polycarbonate bowl lets you see the liquid level at a glance. An external round gauge with a bar scale is fitted for outlet pressure reading. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). No mounting bracket is included with this configuration.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, and is configurable by drain type (differential-pressure, automatic or manual), filter grade (40 um standard, 5 um optional), gauge style and scale, thread type (PT, G or NPT) and bracket. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | GFR40015LJC3T AirTAC Filter Regulator NPT1/2 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (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, bar 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. |
|---|---|
| 15 | Port size PT1/2". 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. |
| 3 | Gauge scale: bar. 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 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Feeding filtered, regulated air to a machine-shop clamping fixture or light-duty pneumatic press, where the low-pressure regulator type holds the working pressure the tooling was set up for and the 40 um element keeps scale and pipe debris out of the valve stack.
Conditioning the air feed on a cartoning or case-packing line: the filter section strips water and particles before the actuators, the regulator section sets the machine's supply pressure, and the differential-pressure drain clears condensate without a manual blow-down routine.
Serving a process drop on a textile or converting line where machinery runs on lower regulated supply pressure; the round bar gauge gives operators a direct local reading and the polycarbonate bowl makes condensate checks part of the walk-round.
Start with the port step: this unit is size 400 with a 1/2 in NPT port, one of six steps (1/8, 1/4, 3/8, 1/2, 3/4, 1 inch) across the GFR range - pick the size whose flow curve covers your demand. This configuration uses the low-pressure regulator type; its exact regulation range is not published in the catalogue, so confirm it with us against your set pressure before ordering. The 40 um element is the standard grade; specify code W for 5 um if finer filtration is needed. Drain options are differential-pressure (this unit), automatic (A) or manual (M). Gauge choices are the embedded square gauge or an external round gauge, with MPa, psi or bar scales - this unit carries the round gauge with a bar scale. Thread is PT as the catalogue standard, with G (BSPP) and NPT as order options; this unit is built with NPT. Brackets are optional (this configuration has none).
Because flow is published as curves rather than a single rated figure, 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 GFR400 series as curves, not as a single rated number, so we do not quote a rated flow, Cv or SCFM figure. Tell us your inlet pressure, set pressure and air demand and we will confirm the sizing from the datasheet on request before you order.
The L in the code makes this the low-pressure regulator type rather than the standard type; the exact regulation range for the low-pressure type is not published in the catalogue, so confirm it with us against your set pressure. The C3 code fits the external round gauge with a bar scale (MPa and psi scales are order options). The unit also uses the differential-pressure drain, the 40 um standard filter element, and NPT threads - PT is the catalogue standard and G (BSPP) is available to order.
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.