The AirTAC GFR30010C1WTK AirTAC Filter Regulator NPT 3/8 in, 5 um is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT3/8" 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 GFR30010C1WTK is a size-300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration carries a 3/8 in NPT port, a fine 5 um filter element (the W grade, tighter than the standard 40 um), a differential-pressure drain that bleeds accumulated condensate automatically as flow passes through, a round external pressure gauge reading in MPa, and a built-in reverse/check valve that holds the downstream setting if upstream supply is lost. The regulated outlet range is 0.15-0.9 MPa (20-130 psi), with a maximum inlet pressure of 1.0 MPa (145 psi), and the unit works in temperatures from -5 to 70 C (non-freezing). The polycarbonate bowl suits size 300, and a mounting bracket is included.
This is a genuine AirTAC part. The GFR family is offered in sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, and with choices of drain type, filter grade, gauge style and scale, thread form (PT standard, G and NPT to order) and reverse valve. Flow figures for this series are published as curves rather than a single rating, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR30010C1WTK AirTAC Filter Regulator NPT 3/8 in, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 5 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 — round, MPa scale |
| Reflux valve | Fitted (reverse flow permitted) |
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. |
|---|---|
| 10 | Port size PT3/8". 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). |
| C | Gauge shape: Round. C is round, F is square. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Feeding filtered, regulated air to the tool-changer and clamping circuits of a CNC machining centre, where the 5 um element keeps fine particulate out of precision actuators and the check valve holds the setting during supply dips.
Supplying regulated air to the stopper and pusher cylinders along a packaging conveyor line, with the differential-pressure drain clearing condensate as the line runs through multiple shifts.
Conditioning air ahead of the pneumatic valve manifold on a bottling line, where clean 5 um air and a stable regulated pressure keep fill, capping and reject valves sequencing reliably.
Step up or down through the GFR sizes (200/300/400/600) to match the port and flow path your line needs; this unit sits at size 300 with a 3/8 in NPT port. Choose the filter grade to suit the duty: 40 um is the standard element, while the 5 um W grade fitted here protects sensitive downstream components such as precision valves and cylinders. Drain choice matters: differential-pressure (fitted here) needs no attention at shutdown, automatic drain suits unattended installations, and manual drain is the simplest and widens the regulator's adjust range to 0.05-0.9 MPa (7-130 psi). Gauge style (embedded square or external round) and scale (MPa, psi or bar) are decodable options, as are thread form (PT standard; G and NPT to order), the reverse/check valve and the mounting bracket. Flow for this series 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. The reflux valve permits reverse flow 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. Tell us your application and we will confirm the flow and sizing from the datasheet on request.
The W code in the model sets the fine 5 um filter grade instead of the standard 40 um element, which suits downstream precision valves and cylinders. The K code fits a reverse/check valve, which holds the regulated downstream pressure if the upstream supply is interrupted. Both are decodable options on the GFR range.
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.