The AirTAC GFR300C08LC1WT AirTAC Filter Regulator NPT1/4 5 um 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 GFR300C08LC1WT is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and holds downstream pressure in one body. This 300-size unit is threaded NPT1/4 (1/4 in), carries the finer 5 um filter element (code W), passes condensate through a differential-pressure drain, and is the low-pressure regulator type fitted with an external round gauge scaled in MPa. A mounting bracket is included and no reverse/check valve is fitted.
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 and PT, G or NPT threads, plus drain, filter-grade, gauge and low-pressure options to match the unit to the line. Maximum inlet pressure is 1.0 MPa (145 psi) and working temperature is -5 to 70 C, non-freezing. Because AirTAC publishes flow as curves rather than a single rating, we confirm flow and full datasheet figures on request.
| Model | GFR300C08LC1WT AirTAC Filter Regulator NPT1/4 5 um |
|---|---|
| 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) |
Air preparation for clamping and holding circuits on assembly fixtures that run at reduced set pressures, with the 5 um element keeping water and fine debris out of directional valves.
Filtering and regulating air to cylinders and grippers on a packaging conveyor, with the differential-pressure drain handling condensate through long, continuous runs.
Point-of-use conditioning for tool-change and workholding circuits in a CNC cell, with the round MPa gauge giving the operator a clear set-point reference at the machine.
Choose the size by the port and flow step: sizes 200, 300, 400 and 600 step up through 1/8 in to 1 in ports, so this 300-size unit with its 1/4 in NPT thread suits lines built around 1/4 in piping. The L in the code selects the low-pressure regulator type; its exact regulation range is not published in the material we hold, so tell us your set pressure and we will confirm suitability. The 5 um element (code W) is the finer of the two published grades (40 um is standard) - pick it where downstream valves and cylinders need cleaner air.
Drain here is differential-pressure, which passes condensate as flow conditions change; automatic and manual drains are order options on other codes. The gauge is the external round type scaled in MPa (psi and bar scales are options) and the embedded square gauge is the standard alternative. Thread is NPT here, with PT as the standard and G as an order option, and a mounting bracket is included. Flow is published as curves, not a single rated figure, 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 line pressure, set pressure and expected air demand and we will confirm the flow from the datasheet on request.
The L in the code selects the low-pressure regulator type, intended for circuits set well below the standard range. Its exact regulation range is not published in our material, so confirm your set pressure with us before ordering. Everything else decodes normally: 5 um filtration, differential-pressure drain, NPT1/4 thread and a round MPa gauge.
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.