The AirTAC GFR300C08LC2WTK AirTAC Filter Regulator NPT1/4 5um 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 GFR300C08LC2WTK is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This 300-size unit is threaded 1/4 in NPT, carries the W fine-filtration element (5 um, against the 40 um standard), is built as the low-pressure regulator type, and includes a differential-pressure drain that bleeds accumulated condensate automatically whenever the pressure differential across the element is high enough. A round psi-scale gauge is fitted so the set pressure is visible, and a reverse/check valve is incorporated to hold downstream pressure if the upstream supply is lost. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C (non-freezing); the bowl on this unit is metal.
This is a genuine AirTAC part. The GFR family is published in 200, 300, 400 and 600 sizes with 1/8 in to 1 in ports, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um filtration, standard or low-pressure regulation, square or round gauges in MPa, psi or bar scales, an optional reverse/check valve, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and flow figures for your application on request.
| Model | GFR300C08LC2WTK AirTAC Filter Regulator NPT1/4 5um |
|---|---|
| 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) |
On a fixture-clamping manifold that holds workpieces at reduced working pressure, this filter regulator cleans the supply to 5 um, holds the set pressure with the check valve if the main supply drops, and shows the clamp pressure on the fitted psi gauge.
Feeding cylinders and air jets on a carton-forming or wrapping line, the 300-size body with 1/4 in NPT ports conditions the shop air, the differential-pressure drain keeps condensate out of the valves, and the metal bowl stands up to daily washdown-adjacent duty.
For pneumatic actuators on laboratory or QC test benches where fine air and gentle, low-pressure actuation matter, the 5 um element protects sensitive components and the low-pressure regulator type sets a reduced working pressure read directly in psi.
Size and port set the air capacity: this unit is 300 size with a 1/4 in NPT port; if your line draws more air, step up to 400 or 600 rather than oversizing the regulator setting. The 5 um (W) element suits instruments, valves and cylinders that need finer air than the 40 um standard element provides. The low-pressure regulator type is intended for circuits that run at reduced working pressure; the exact adjustment range for the low-pressure type is not published in the sheet we work from, so confirm it with us before ordering. The differential-pressure drain is the no-touch default; choose automatic (code A) for a positive timed purge or manual (code M) where you want operator-controlled draining. Gauge scale here is psi; MPa and bar scales are available, and the embedded square gauge is the standard alternative to this round external gauge. Threads come as PT (standard), G (BSPP) or NPT - this unit is NPT. A bracket is included for panel or surface mounting.
Because AirTAC publishes flow only as curves, not a single rated number, we do not quote a flow figure here. Send us your application's air demand and we will confirm sizing against the datasheet before you order.
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, not as a single rated number, so we do not quote a flow figure for this unit. Tell us your application's air demand and operating pressure and we will confirm the flow and datasheet figures for the GFR300 size on request before you order.
The K in the code means a reverse/check valve is fitted: if the upstream supply fails, it holds the downstream pressure so the circuit does not dump instantly. The L code marks the low-pressure regulator type, intended for circuits running at reduced working pressure; its exact adjustment range is not published in our sheet, so confirm it with us on request. The C2 code adds the round external gauge with a psi scale.
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.