The AirTAC GFR300C10LF2WTK 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 GFR300C10LF2WTK is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and holds a regulated downstream pressure. This configuration is the low-pressure regulator type, fitted with a 5 um filter element, a differential-pressure drain on the metal bowl, an embedded square gauge scaled in psi, and a reverse (check) valve. The port is NPT3/8 (3/8 in NPT thread).
This is a genuine AirTAC part. The GFR family runs in sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, in PT (standard), G and NPT threads, with manual, automatic or differential-pressure drains, 40 um or 5 um elements, gauge and scale choices, and standard or low-pressure regulators. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C10LF2WTK 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 clamp cylinders on a pneumatic press that must run at a lower regulated pressure than the main header, with the 5 um element keeping the directional-valve spools clean.
Conditioning air for gripper and divider actuators on a bottling line, where the filter regulator drops header pressure to the level the actuators were sized for and the reverse valve blocks backflow toward the supply side.
Regulating atomizing-air pressure at a paint spray booth below the shop header pressure, with 5 um filtration ahead of the gun to keep the fluid nozzle free of water and debris.
Size 300 with a 3/8 in NPT port sits mid-range in the GFR line; step up or down a size if your circuit needs more or less air, and we will confirm the sizing against the datasheet curves on request. This unit is the low-pressure type, so choose it where the regulated setpoint sits below what a standard regulator targets; the exact adjustment range for the low-pressure type is not published, so confirm it with us before ordering. The 5 um element (code W) suits air feeding sensitive valves and instruments; the standard element is 40 um. The drain here is differential-pressure (the default), with automatic or manual drains available to order instead. The square gauge is scaled in psi; MPa or bar scales and an external round gauge are options. Thread is NPT; PT and G are order options, and a mounting bracket is included.
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 GFR flow as curves rather than a single rated figure, so we do not quote a number here. Send us your inlet pressure, regulated setpoint and expected air demand, and we will confirm the sizing from the datasheet curves before you order.
It marks the low-pressure regulator type. This unit is built for applications whose regulated setpoint sits below the standard regulator's range. The exact adjustment range for the low-pressure type is not published in the catalogue, so confirm it with us before ordering. The trailing K in the code also tells you a reverse (check) valve is fitted.
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.