The AirTAC GFR30008LC1WTK AirTAC Filter Regulator NPT1/4 Low-Pressure 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 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 GFR30008LC1WTK is an AirTAC GFR300 filter regulator: a single body that removes water and particulate from compressed air and regulates the downstream pressure. This configuration is the low-pressure type, built with a 5 um filter element (code W), a differential-pressure drain, an NPT1/4 (1/4 in) port, a fitted round pressure gauge with MPa scale, a reverse/check valve and a mounting bracket. The bowl on this 300 size is polycarbonate (PC), and the maximum working (inlet) pressure is 1.0 MPa (145 psi) with an operating temperature of -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR series is available in sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and can be ordered with different drain types, 40 um or 5 um filter grades, embedded square or external round gauges (MPa, psi or bar scales), G or NPT threads and bracket options. Flow is published by AirTAC as curves rather than a single rated figure, so we confirm flow and datasheet values on request.
| Model | GFR30008LC1WTK AirTAC Filter Regulator NPT1/4 Low-Pressure |
|---|---|
| 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 | Differential-pressure 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". |
| (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). |
| 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) |
Filtered, low-pressure regulated air feeding light-duty clamping cylinders on a manual assembly bench, with the check valve holding the set circuit while upstream air fluctuates.
Conditioning the 1/4 in air drop that supplies small pick-and-place and gating cylinders on a carton packaging conveyor, with 5 um filtration protecting the valve stack.
A filtered, low-pressure regulated air point for benchtop lab automation modules and actuated sample handlers, with the MPa gauge giving a clear local setpoint reading.
Choose the GFR300 size step and its 1/4 in port against the air consumption of the circuit it feeds; larger sizes carry larger ports and more flow. Pick the drain type for the installation: differential-pressure (as here), automatic, or manual where someone drains the bowl as part of a routine. Pick the filter grade: 40 um is the standard element and 5 um (code W, as on this unit) suits finer downstream needs. Select the gauge style and scale (embedded square or external round; MPa, psi or bar), the thread (PT is the standard, G and NPT are order options), and whether a bracket is required. This unit is the low-pressure type and carries a reverse/check valve. Flow is published as curves, not a single rating, so 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.
AirTAC publishes flow for the GFR300 as curves rather than a single rated figure, so no single rated flow number is quoted here. Tell us your application and we will confirm the flow and sizing from the datasheet on request.
The L in the code marks the low-pressure regulator type, intended for circuits set below the standard range; the exact adjustment range for this variant is not published, so we confirm it on request. The W marks the 5 um filter element, one grade finer than the 40 um standard. This unit also carries a round MPa gauge, a reverse/check valve, a differential-pressure drain, an NPT1/4 port and a mounting bracket.
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.