The AirTAC GFR30008ALF2WT AirTAC Filter Regulator NPT1/4, 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 PT1/4" 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 GFR30008ALF2WT is a GFR300-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration is built for a low-pressure circuit, with a 5 um filtration element for finer air than the standard 40 um grade, an automatic drain that expels collected condensate without manual attention, a fitted square gauge reading in psi, and a 1/4 in NPT port. The polycarbonate bowl suits the 300 size, and the unit includes a mounting bracket.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port options from 1/8 in to 1 in, a choice of drain types, 40 um or 5 um filtration, gauge styles and scales, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so we confirm the datasheet figures for your application on request.
| Model | GFR30008ALF2WT AirTAC Filter Regulator NPT1/4, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (NPT 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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, psi 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. 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.
| GFR300 | G-series filter regulator, 300 body — sets the port range. |
|---|---|
| 08 | Port size PT1/4". This body offers 08 = PT1/4", 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. |
| (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. |
| T | NPT 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 | GFR300 · PT1/4" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Feeding the pneumatic grippers and cylinders of a robotic pick-and-place cell, where the 5 um element protects valve spools from fine contamination and the automatic drain keeps condensate out of the circuit between shifts.
Conditioning the air feed to lab analysers or test benches that run at modest pressures, where the low-pressure regulator type, psi-reading square gauge and fine 5 um filtration support stable, clean supply air.
Regulating and filtering air to conveyor stopper cylinders and diverters on a packaging line, with the automatic drain handling condensate from a line that runs continuously and cannot pause for bowl checks.
Size and port step up together: 200, 300, 400 and 600 carry progressively larger ports and higher flow capacity, so match the 300 size and its 1/4 in NPT port to the air demand of the circuit. This unit is the low-pressure type, so select it where the working pressure sits below what a standard regulator targets; ask us to confirm the exact adjustment span before ordering. The 5 um element (code W) suits instruments and components sensitive to finer contamination; the standard grade is 40 um. The automatic drain keeps condensate off your maintenance schedule, which matters on unattended or hard-to-reach installations. The square gauge is fitted here reading psi; MPa and bar scales and an external round gauge are alternatives. PT is the standard thread, with G and NPT as order options, and the bracket is included.
Because flow is published as curves and not a single rated figure, 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. 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 series as curves rather than a single rated figure, so we do not quote a l/min or SCFM number. Send us your application details and we will confirm the flow and datasheet figures for the GFR300 size at your operating pressure before you order.
The W code in GFR30008ALF2WT selects the optional 5 um filtration grade instead of the standard 40 um element, for finer removal of particulate and water carryover. The A code selects the automatic drain, which expels collected condensate on its own instead of relying on the differential-pressure action or a manual drain, so the bowl does not need routine attention.
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.