The AirTAC GFR40010F2WK AirTAC Filter Regulator 3/8 in, 5 um, PSI Gauge 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 GFR40010F2WK is an AirTAC GFR400 filter regulator: filtration and pressure regulation combined in a single body, with no lubricator. It removes water and particulate from compressed air through a 5 um element (the fine grade, code W, versus the 40 um standard) and holds downstream pressure within a 0.15-0.9 MPa (20-130 psi) adjustment range. This configuration is fitted with an embedded square gauge scaled in psi, a reverse/check valve, and a differential-pressure drain that bleeds collected condensate automatically whenever the pressure drop across the element is high enough - no daily manual draining on a well-loaded line. The 3/8 in PT port suits mid-size supply drops, and the polycarbonate bowl lets you see the condensate level at a glance. Maximum inlet pressure is 1.0 MPa (145 psi); operating temperature is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drain, 40 um or 5 um filtration, gauge scale options, and G (BSPP) or NPT threads as order alternatives to the PT standard. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR40010F2WK AirTAC Filter Regulator 3/8 in, 5 um, PSI Gauge |
|---|---|
| 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 | 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 — 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. 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. |
|---|---|
| 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)). |
| (blank) | Standard 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) |
On a workshop pneumatic press line, the 3/8 in port feeds the press valve manifold while the 5 um element keeps fine particulate out of the directional valve, and the regulator holds a steady working pressure so cycle force stays repeatable.
On a cartoning or wrapping machine fed from a plant air ring main, this unit filters water and debris from the supply, regulates the pressure to the machine's actuator circuit, and the check valve holds the set pressure if the main dips momentarily.
At a spray-booth or coating-line air drop, the 5 um grade gives finer protection than the standard element ahead of sensitive downstream equipment, the psi gauge lets operators set and verify line pressure at a glance, and the differential drain keeps condensate moving out without a daily walk-round.
Start with the port step: this unit is size 400 with a 3/8 in PT port, one step up from the 1/4 in size-300 units - step up when your supply line and expected air demand are larger, but have us confirm the sizing against the flow curves rather than guessing a number. Drain choice is real: differential-pressure (as fitted here) drains itself under load, automatic (code A) drains on a timer-free cycle, and manual (code M) needs someone to open the drain - on intermittent or lightly loaded lines, manual or automatic is often the safer pick. The 5 um element here is the finer grade; choose it where downstream valves, cylinders or instruments tolerate less particulate, and 40 um where coarser protection is enough. The square gauge is scaled in psi on this code; MPa and bar scales are also available, and an external round gauge is an option. PT is the standard thread; G (BSPP) and NPT versions exist as catalogue options to order. A mounting bracket is included with this configuration.
One honest note: AirTAC publishes flow as curves, not a single rated figure, so we do not quote a flow number here. Send us your application details and we will confirm the datasheet figures and sizing 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 series as curves rather than a single rated figure, so we do not quote a flow number, Cv or SCFM value here. Send us your line pressure, port size and expected air demand, and we will confirm the datasheet flow figures and check the sizing for your application before you order.
The W in the code GFR40010F2WK selects the 5 um filtration grade, one step finer than the 40 um standard element - choose it where downstream valves, cylinders or instruments need cleaner air. The K code means a reverse/check valve is fitted, which prevents backflow through the unit. The square gauge on this code is scaled in psi; MPa and bar scales are also available as options.
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.