The AirTAC GFR400-15LJC2TK 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 GFR400-15LJC2TK is an AirTAC GFR400 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This size 400 unit is built around a 1/2 in NPT port and carries the low-pressure regulator type (code L), so it is the version to specify when the downstream circuit must be held at reduced working pressure rather than near line pressure. The 40 um standard filter element handles everyday water and particle removal, the differential-pressure drain bleeds collected condensate automatically as flow passes through, and the fitted check valve (code K) holds the downstream setting if upstream supply is interrupted. The round gauge supplied is scaled in psi, and the polycarbonate bowl lets you see the condensate level at a glance.
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options across the line include 5 um filtration (code W), automatic or manual drains, G (BSPP) or NPT threads in place of the PT standard, gauge choices and scale variants. Flow figures for this series are published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR400-15LJC2TK 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, psi scale |
| Reflux valve | Fitted (reverse flow permitted) |
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. |
| 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. |
| K | Reverse-flow (reflux) valve fitted. |
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) |
Film sealing jaws and clamping cylinders on a packaging line need a steady, reduced pressure well below the main header. This low-pressure-type filter regulator, fed from the plant 1/2 in air main, cleans the air and lets the operator set and read the sealing pressure in psi, with the check valve holding the setting through brief supply dips.
Air cylinders, grippers and gate actuators on a bottling conveyor are fed from a local pneumatic panel. Mounted at the panel inlet on a 1/2 in drop, this unit removes water and pipe-scale particles at 40 um, regulates the panel pressure down from the header, and its differential-pressure drain keeps condensate out of the valves without daily attention.
Test benches and lab rigs running pneumatic instruments need clean, low, stable pressure from a shop-air supply. Connected to a 1/2 in bench line, this filter regulator strips water and particulate before the instruments, holds the low test pressure the rig requires, and the psi round gauge gives the operator a direct pressure readout.
Start with the port step: this unit is the size 400, 1/2 in version, the right choice when your air main and downstream consumers are on 1/2 in lines and the flow demand sits in that size band - step up to size 600 or down to size 300 if your piping differs. The drain is the differential-pressure type, which needs no operator attention; if your machine is shut down for long periods or you want positive control, the automatic (A) and manual (M) drain variants are decodable alternatives. Filtration is the 40 um standard element; specify the W code if the 5 um element is required. The gauge here is the external round type scaled in psi; embedded square gauges and MPa or bar scales are the other catalogue choices. Thread is NPT on this unit, with G (BSPP) orderable, and note that the J code means no mounting bracket is supplied - order the bracket variant if you panel- or wall-mount the unit.
One honest routing note: AirTAC publishes flow for this series as curves, not as a single rated figure, so we do not quote a flow number here. Send us your application details and we will confirm the sizing against the datasheet curves before you order.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the G-series as curves, not as a single rated figure, so we do not quote a flow number for this unit. Tell us your application - line pressure, required downstream pressure and the consumers you are feeding - and we will confirm the relevant datasheet flow curve and help you check whether the size 400, 1/2 in port is the right step before you order.
The L is the low-pressure regulator type. It is the version intended for circuits that must run at reduced working pressure rather than near line pressure. The exact adjustment range for the low-pressure type is not published in the material we hold, so we confirm it on request; the standard-type GFR units adjust from 0.15 to 0.9 MPa (20-130 psi) with the differential-pressure drain fitted, which this unit carries.
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.