The AirTAC GFR400-15ALJC1TK AirTAC Filter Regulator NPT1/2 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 automatic 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 GFR400-15ALJC1TK is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This 400-size unit is fitted with a 1/2 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 pressure gauge scaled in MPa is included so the set pressure is visible at a glance. A reverse (check) valve is fitted, and this configuration is supplied without a mounting bracket. The polycarbonate bowl lets you see the condensate level.
This is a genuine AirTAC part. The GFR filter-regulator family spans sizes 200, 300, 400 and 600, with port sizes from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drain, a 40 um standard or 5 um (W) filter element, standard or low-pressure regulator types, gauge scale options, and G, NPT or PT threads. Max inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR400-15ALJC1TK AirTAC Filter Regulator NPT1/2 |
|---|---|
| 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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, MPa 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". |
| A | Drain: Automatic 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. |
| 1 | Gauge scale: MPa. 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) |
Feeding clamp and fixture cylinders on a CNC machining cell: the GFR strips water and swarf-laden particulate from the shop air and holds a steady, lower regulated pressure so clamping force stays repeatable from cycle to cycle. The automatic drain keeps condensate off the fixtures on lines that run unattended.
Supplying diverters, seal bars and actuated guides on a packaging conveyor: the filter section protects the machine's valves from water and dirt, the low-pressure regulator sets a gentle working pressure for delicate product handling, and the fitted check valve holds the circuit if upstream supply dips.
Conditioning air for bench-mounted test rigs and lab automation: the 40 um element removes pipe-scale and water before sensitive instruments, the round MPa gauge gives a clear visual reference for recorded test conditions, and the 1/2 in NPT port ties into the building's main air drop.
Start with the port size: this unit is 400 size with a 1/2 in NPT port, and the step up to 600 or down to 300 changes both the connection and the flow capacity, so match the size to the air demand of the circuit. Choose the drain to suit access: automatic (this unit) suits installations that are not checked daily, manual suits attended points, and the differential-pressure default drains only when the pressure drop calls for it. Filter grade is 40 um as standard; specify the W code for the 5 um element where finer particulate removal is needed. This is the low-pressure regulator type - if your set pressure sits in the upper part of the standard range, check with us before ordering. Gauge scale is MPa here; psi and bar scales are available, and the embedded square gauge can be substituted for the external round one. Thread is NPT on this code; PT is the standard and G (BSPP) is an order option. A bracket can be added if this no-bracket configuration needs panel fixing.
Flow for this family 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR family as curves, not as a single rated figure, so we do not quote a number that could mislead your sizing. Tell us your application - required pressure, downstream consumption and duty - and we will confirm the flow and the full datasheet for this unit on request before you order.
The A in the code specifies an automatic drain: the filter bowl expels collected condensate by itself, which suits installations that are not checked every day; manual and differential-pressure drains are the alternatives on other codes. The L specifies the low-pressure regulator type, intended for circuits regulated below the standard type's range - the exact adjustment range for this type is not published in the catalogue, so confirm it with us for your set pressure.
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.