The AirTAC AirTAC GFR300C10MF1WTK 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 GFR300C10MF1WTK is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure at your setpoint in one body. This size 300 unit is threaded NPT3/8, carries a 5 um filter element (code W), drains by hand through its manual drain, and is fitted with an embedded square gauge scaled in MPa, a reverse/check valve and a mounting bracket. The bowl is metal, and the standard regulator covers 0.05-0.9 MPa (7-130 psi).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600, with port sizes stepping up from 1/8 to 1 inch, and options across drain type, 40 um or 5 um filtration, gauge style and scale, G (BSPP) or NPT threads, and bracket choice. Flow is published as curves rather than a single rating, so ask us to confirm the figures for your application against the datasheet.
| Model | AirTAC GFR300C10MF1WTK 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) |
Filtered, regulated air feeds pneumatic clamps and tool-change cylinders on a machining centre; the 5 um element protects fine control valves from particles while the check valve holds the circuit if supply pressure dips.
Case erectors, carton sealers and pick-and-place cylinders run on steady, regulated pressure; the manual drain lets operators bleed accumulated water at shift start, and the square MPa gauge gives a local setpoint check.
Air-driven filler and capper valves need clean, stable air at the machine; this filter regulator mounted at the manifold keeps water and debris out of the valve bank and holds the pressure the actuators were set up for.
Choose the size by the port and flow step you need: sizes 200 through 600 step up in port and capacity, and this unit sits at size 300 with a 3/8 inch NPT port. Pick the drain to suit the duty: manual (as here) for periodic draining under operator control, or automatic and differential-pressure variants for hands-off service - note the regulation range differs by drain type. Select 40 um for general protection or 5 um (this unit) for finer air quality, choose the gauge scale (MPa, psi or bar), and specify the thread: PT is the standard, with G (BSPP) and NPT as order options. Because flow is published as curves rather than a single rated figure, send us your application details 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 GFR flow as curves, not as a single rated figure, so we do not quote a number here. Tell us your operating pressure and air consumption and we will confirm the flow from the datasheet on request before you order.
A manual drain means an operator opens the drain to discharge collected water - suited to attended machines and shift-start routines. Automatic and differential-pressure drains are available in the same family for hands-off service, and the regulation range depends on the drain type, so we will confirm the right variant for your duty.
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.