The AirTAC GFR300C10LC1WTK 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 AirTAC GFR300C10LC1WTK is a GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This 300-size unit is threaded NPT3/8 (3/8 in) and carries the 5 um filter element (code W) in place of the 40 um standard. It drains by differential pressure, is built as the low-pressure regulator type, and comes with a round MPa pressure gauge fitted, a reverse/check valve installed and a mounting bracket included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. The bowl on this 300 size is polycarbonate (PC); only the 600 size uses an aluminium alloy bowl.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and catalogue options for thread (PT standard; G and NPT to order), drain type (differential-pressure, automatic or manual), filter grade (40 um standard, 5 um optional), gauge style and scale, and a reverse/check valve. AirTAC publishes flow for this series as curves rather than a single rating, so ask us to confirm the datasheet and flow figures for your application before ordering.
| Model | GFR300C10LC1WTK 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) |
Feeding spray guns on a finishing line: the low-pressure regulator holds a reduced atomizing set pressure while the 5 um element keeps water and particles out of the gun, and the check valve holds the downstream setting if supply pressure dips.
Supplying bench-mounted analytical and test instruments that need clean air at a reduced, stable pressure: the 5 um filtration protects sensitive fittings and the round MPa gauge gives a clear set-point check at the bench.
Running cylinders and sorting fingers on a packaging conveyor: the filter-regulator keeps the actuation circuit clean and regulated, the check valve holds circuit pressure through upstream dips, and the included bracket mounts the unit on the machine frame.
Size GFR300 with NPT3/8 ports sits mid-range in the family: step down to 200 or up to 400/600 depending on the air demand of your line - we can check the published flow curves against your requirement before you order. The 5 um element (W) is the right choice where downstream valves, cylinders or instruments need finer filtration than the 40 um standard. Drain on this unit is differential-pressure, which clears the bowl automatically as flow varies; automatic (A) and manual (M) drains are orderable alternatives. The gauge fitted is the external round type with MPa scale; psi and bar scales, or the embedded square gauge, are the other catalogue choices. Thread is NPT here - PT is the AirTAC standard and G (BSPP) is also available to order. A mounting bracket is included. Regulation on this variant is the low-pressure type; its exact adjustment range is not published in the data we hold, so confirm your set pressure with us 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, not as a single rated figure, so we do not quote a number here. Send us your inlet pressure, set pressure and air demand and we will confirm the flow and datasheet figures for this exact unit on request.
This unit is built as the low-pressure regulator variant, intended for reduced set pressures rather than the standard type's range. The exact adjustment range for this variant is not published in our current data, so tell us the set pressure you need and we will verify it against 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.