The AirTAC GFR300C10MF3WTK 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 GFR300C10MF3WTK is an AirTAC GFR300 filter regulator: a single body that removes water and particulate from compressed air and holds downstream pressure steady. This configuration is built with a 3/8 in NPT port, a manual drain, a 5 um filter element, a metal bowl, an embedded square gauge scaled in bar, an integrated reverse/check valve, and a mounting bracket included.
It is a genuine AirTAC part. The GFR range is made in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and options that include automatic, manual or differential-pressure drains, 40 um or 5 um filtration, gauge scales in MPa, psi or bar, and G, NPT or PT threads. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C10MF3WTK 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 clean, regulated air to the pneumatic actuators and air-blast circuits on a CNC machining centre, with the 5 um element protecting directional valves from fine particulate.
Regulating supply pressure to the gripper and clamp cylinders on a carton packaging line, with the built-in check valve holding the set pressure if the main supply dips.
Conditioning compressed air for lab analysers and sample-handling pneumatics, where the 5 um filtration grade and a bar-scaled gauge keep the supply clean and the setting visible.
Choose the size and port against the air your application consumes: this unit is size 300 with a 3/8 in NPT port. The 5 um element (code W) suits points of use that need finer filtration than the 40 um standard, and the manual drain means an operator opens the bowl drain during routine checks rather than relying on an automatic or differential-pressure drain. The square gauge reads in bar, the built-in check valve holds the downstream setting if the upstream supply drops, the bracket is included, and the regulation range with the manual drain is 0.05-0.9 MPa (7-130 psi).
Flow for this series is published as curves, not a single rated figure, so send us your flow and pressure requirements and we will confirm sizing from 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 flow for the GFR300 series as curves rather than a single rated figure, so we do not quote one number. Send us your flow and pressure requirements and we will confirm the datasheet figures for this exact configuration before you order.
This unit has a manual drain: the bowl is drained by hand during routine checks. The GFR300 series is also available with an automatic or differential-pressure drain, and filtration can be the 40 um standard or this 5 um grade - tell us which suits your installation.
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.