The AirTAC GFR300C10LC3WTK AirTAC Filter Regulator NPT3/8 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 GFR300C10LC3WTK is an AirTAC GFR filter regulator: water and particulate filtration plus pressure regulation combined in one body with a single drain bowl. This configuration is the 300 size with NPT3/8 ports, a 5 um filter element (code W), the differential-pressure drain, and the L low-pressure regulator type. A round gauge with a bar scale is fitted, the reverse-flow check valve (code K) is installed, the mounting bracket is included, and the bowl is metal. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans 200, 300, 400 and 600 sizes with ports from 1/8 to 1 inch, and offers a choice of drain type, 40 um or 5 um filtration, gauge style and scale, thread (PT standard; G and NPT to order), bracket and check valve. Flow is published as curves rather than a single rating, so we confirm datasheet figures on request before you order.
| Model | GFR300C10LC3WTK AirTAC Filter Regulator NPT3/8 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. |
|---|---|
| C1 | 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-C1 (two-unit set) |
Point-of-use filtered and regulated air for spray guns in a finishing booth; the 5 um element keeps water and particulate out of the finish while the low-pressure type suits reduced-pressure atomizing circuits.
Regulated low-pressure air knives and cleaning nozzles along a packaging conveyor, with the fitted check valve blocking backflow toward the supply side if line pressure is interrupted.
Supplying filtered, low-pressure air to actuated dampers and process valves on a plant floor, with the bar-scale gauge giving operators a local pressure reference at the unit.
Step up or down through the 200/300/400/600 sizes to match the port and flow path your line needs; this unit sits at 300 with NPT3/8. Drain choice matters: differential-pressure (as fitted here) dumps condensate with flow, automatic drains without intervention, and manual drain suits intermittent duty - and the drain type affects the regulator range on standard versions. Filtration is 40 um standard or 5 um (W, as here) when downstream equipment needs finer air. Gauge style and scale (square embedded, or round external in MPa, psi or bar - this unit carries a round bar gauge) and the check valve (K) are decodable options, as is the thread: PT is the standard, with G and NPT as order options. Note this is the L low-pressure regulator type, so its range differs from the standard version. 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 G-series flow as curves rather than a single rated figure, so we do not quote a number here. Send us your line pressure and application details and we will confirm sizing against the datasheet curves before you order.
This unit is the L low-pressure regulator type, so it regulates below the standard GFR range. AirTAC does not publish the exact range for this variant in the material we hold, so we will confirm it from the datasheet on request. The standard-range figures quoted elsewhere in the G series do not apply to this code.
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.