The AirTAC GFR400C15LJF2K AirTAC Filter Regulator PT1/2 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 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 GFR400C15LJF2K is a size-400 filter regulator: water and particulate filtration plus pressure regulation combined in one body. This configuration has PT1/2 (1/2 in) ports with PT thread as standard, a 40 um standard filter element, a differential-pressure drain, a low-pressure regulator type, an embedded square gauge reading in psi, and a reverse (check) valve fitted. It is supplied without a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl keeps the media visible for drain checks.
This is a genuine AirTAC part from the GFR filter-regulator family, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in. Across the family you can order automatic, manual or differential-pressure drains, a 5 um (code W) element instead of the 40 um standard, G (BSPP) or NPT threads, gauge scale choices, and bracket options. Flow is published as curves rather than a single rating, so ask us and we will confirm the datasheet and sizing figures for your application on request.
| Model | GFR400C15LJF2K AirTAC Filter Regulator PT1/2 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) |
Feeds and regulates the clamp circuit of a milling or drilling fixture where workpieces must be held at a reduced, stable set pressure rather than full line pressure, with the 40 um element protecting the clamp valves from water and swarf-carrying compressed air.
Mounted at the drop of a packaging conveyor's air supply, it filters condensed water and particles out of the shop air and regulates the pressure feeding the box-flap cylinders and tape-head actuators, with the psi gauge giving operators a local setpoint check.
Provides filtered, reduced-pressure air to bench-scale process equipment or test rigs that require gentle, low-pressure air rather than full header pressure, with the check valve helping hold the downstream circuit and the differential-pressure drain handling collected condensate.
Start with the port step: this unit is size 400 with PT1/2 (1/2 in) ports, one of the larger steps in the GFR range (sizes 200/300/400/600 map to 1/8 in through 1 in), so match it to your line size and the air demand of the machine it feeds. Because flow is published as curves and not a single rated figure, send us your application details and we will confirm sizing against the datasheet before you order. This unit is the low-pressure (L) regulator type, suited to circuits that hold reduced set pressures; its exact regulation range is not published in our data, so we will confirm it on request.
Other decodable choices: the drain here is differential-pressure (the default); automatic (A) and manual (M) drains are available if you prefer. The element is 40 um standard - order the W variant for 5 um finer filtration. The gauge is the embedded square type reading psi; an external round gauge is optional and scales can be MPa, psi or bar. Thread is PT as standard with G (BSPP) and NPT as order options, and brackets can be added if this no-bracket version does not suit your mounting.
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 this family as performance curves, not as a single rated figure, so we do not quote a Cv, l/min or SCFM number. Tell us your line size and air demand and we will confirm the datasheet curves and sizing for the GFR400 at PT1/2 on request before you order.
The L code means this GFR400 carries the low-pressure regulator type instead of the standard one, intended for circuits held at reduced set pressures; the exact range for the low-pressure type is not published in our data, so we confirm it on request. The drain is the differential-pressure type (the default): it discharges collected condensate automatically as the pressure differential across the unit changes, so no manual draining routine is needed. Automatic (A) and manual (M) drains are available as alternative configurations.
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.