The AirTAC GFR30008ALC1WTK AirTAC Filter Regulator NPT1/4 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 GFR30008ALC1WTK is a size-300 GFR filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has a 1/4 in NPT port, a 5 um filter element (the finer of the two published grades), an automatic drain that ejects collected condensate without operator attention, a reverse/check valve fitted, and an external round pressure gauge scaled in MPa. It is the low-pressure regulator type, and a mounting bracket is included. Maximum working (inlet) pressure is 1.0 MPa (145 psi), and the operating temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl suits the 300 size; only the 600 size uses an aluminium alloy bowl.
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um standard or 5 um (W) filtration, gauge and thread options, and standard or low-pressure regulator types. Flow is published as curves rather than a single rating, so we confirm the datasheet and sizing figures for your application on request.
| Model | GFR30008ALC1WTK AirTAC Filter Regulator NPT1/4 |
|---|---|
| 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 — 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.
| 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). |
| C | Gauge shape: Round. C is round, F is square. |
| 1 | Gauge scale: MPa. 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. |
| 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 | GFR300 · PT1/4" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Point-of-use conditioning for carton sealers and case packers: the 5 um element protects directional valves and cylinders from water and fine dirt while the low-pressure regulator holds the set pressure the machine's actuator circuit was designed around.
Filtered, regulated supply for fixture clamps and swing cylinders on a CNC cell, where the low-pressure type and round MPa gauge let the setter dial in and verify the clamping circuit pressure at the machine.
Conditioning the air feeding diverter gates and cleaning nozzles along a sorting conveyor: the automatic drain keeps condensate out of the circuit during continuous shifts without an operator draining a bowl by hand.
Choose the size and port step against the air consumption of the circuit: this unit is size 300 with a 1/4 in NPT port, and larger sizes carry larger ports and more flow. The 5 um element in this code is the finer published grade; the standard grade is 40 um. The automatic drain here suits unattended duty; manual and differential-pressure drains are the other published choices. The round MPa gauge is fitted; embedded square gauges and MPa/psi/bar scales are the other gauge options. PT is the standard thread and G and NPT are order options - this code carries NPT. A bracket is included, and the reverse/check valve is fitted.
Because flow is published as curves rather than a single rated figure, ask us to confirm sizing against your application before ordering. The low-pressure regulator type in this code has an exact range not published in our sheet; we confirm it on request.
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, not as a single rated number, so we do not quote a figure here. Send us your application's air consumption and line pressure and we will confirm the sizing and the datasheet flow curves for this model on request.
The A in the code GFR30008ALC1WTK selects the automatic drain, which ejects collected condensate from the bowl without operator attention - useful on unattended or continuously running equipment. The published alternatives are the manual drain (code M) and the differential-pressure drain (the default, blank). The regulation range of the low-pressure type in this code is not published on our sheet; we confirm it on request.
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.