The AirTAC GFR300C08LC3WTK AirTAC Filter Regulator 1/4in NPT is a genuine G-series filter regulator: water separation, 40 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has See datasheet 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 GFR300C08LC3WTK is an AirTAC GFR300 filter regulator: a 5 um filter element and a pressure regulator combined in one body, sized for a 1/4 in NPT port. This configuration is the low-pressure regulator type with the 5 um element (code W), a differential-pressure drain, a round gauge with bar scale fitted, a reverse/check valve, and the mounting bracket included. The polycarbonate bowl suits the standard 300-size envelope, and the maximum inlet pressure is 1.0 MPa (145 psi).
It is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and options for drain type, 40 um or 5 um filtration, gauge style and scale, PT, G or NPT threads, and a check valve. Because AirTAC publishes flow only as curves rather than a single rating, we confirm flow and other datasheet figures for your application on request.
| Model | GFR300C08LC3WTK AirTAC Filter Regulator 1/4in NPT |
|---|---|
| Series | GFR300 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 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 — factory standard, Factory standard 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. 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.
| GFR300 | G-series filter regulator, 300 body — sets the port range. |
|---|---|
| C0 | Port size See datasheet. 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)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT 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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-C0 (two-unit set) |
Supplies filtered, low regulated pressure to pneumatic clamps holding thin sheet on a welding fixture, where the 5 um element keeps contaminant out of the clamp cylinders and the low-pressure type suits gentle clamping forces.
Feeds a robot gripper manifold on an assembly cell: the regulator holds a low, stable set pressure for delicate parts, and the fitted check valve helps hold downstream pressure if the upstream supply dips.
Conditions the air feeding sealing jaws and diverters on a packaging line, with the 5 um grade protecting small valves and the low-pressure regulator matching the modest working pressure those stations use.
The real, decodable choices in this series: step up or down in size (200/300/400/600) to match the port and the flow your line needs; choose the drain (differential-pressure as here, automatic, or manual); pick 40 um standard or 5 um filtration; choose gauge style and scale (MPa, psi or bar); order PT, G or NPT threads; and add or omit the bracket. This unit is the low-pressure regulator type with a 5 um element, a bar-scale gauge and a check valve, and it operates at -5 to 70 C, non-freezing. 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. Without the K option, air cannot flow back 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 number here. Send us your application details and we will confirm the flow and sizing from the datasheet on request.
This model carries the L code, so its regulator is the low-pressure type rather than the standard version. The exact regulation range for this variant is not published in the material we hold; ask us and we will confirm it from the AirTAC datasheet before you order.
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.