The AirTAC GFR40010LF2WK AirTAC Filter Regulator 3/8 in PT, 5 um is a genuine G-series filter regulator: water separation, 5 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 GFR40010LF2WK is an AirTAC GFR400 filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single body. This configuration is the 400 size with a 3/8 in PT port, a 5 um filter element (code W), and a differential-pressure drain that discharges condensate as the pressure differential across it builds, with no manual draining in normal operation. It is the low-pressure regulator type (code L), carries an embedded square gauge reading in psi, and a reverse/check valve is fitted. The mounting bracket is included.
This is a genuine AirTAC part. The GFR family is offered in sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and with drain, filter-grade, gauge, thread and bracket options to match the line; the 200/300/400 bowls are PC (polycarbonate), with aluminium alloy only at size 600. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR40010LF2WK AirTAC Filter Regulator 3/8 in PT, 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (PT thread) |
| Filtering grade | 5 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 — square, 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. |
|---|---|
| 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. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT 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 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
Fixture clamps and swing cylinders run at reduced pressure on many machining cells; this unit filters the supply to 5 um to protect the valve stack and holds the reduced circuit pressure steady.
Carton gates and diverters on bottling and packaging lines use short-stroke cylinders at modest pressures; the 3/8 in port, 5 um filtration and regulated low-pressure output suit that duty.
Test rigs and pilot setups need clean, steady low-pressure air to the instruments under test; the psi-reading square gauge and reverse/check valve make this a tidy bench-side supply unit.
Step through the sizes (200/300/400/600) to match the port and flow path; this unit is the 400 size with a 3/8 in PT port. Drain choice is differential-pressure as fitted here, automatic (A) or manual (M). Filter grade is 5 um here (code W) against the 40 um standard. The gauge is the embedded square type reading psi; an external round gauge and MPa or bar scales are order options. Thread is PT as standard, with G (BSPP) and NPT available to order. This is the low-pressure regulator type (code L); its adjustment range is not published as a single figure, so tell us your set pressure and we will confirm it from the datasheet. Because flow is published as curves, not a single rating, 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
Flow for the GFR400 is published as curves, not as a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the datasheet curve and correct sizing before you order.
It marks the low-pressure regulator type. Its adjustment range is not published as a single figure; tell us the set pressure your circuit needs and we will confirm suitability from the datasheet.
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.