
The AirTAC Airtac GFR Filter Regulator GFR300C10MC1WK 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 GFR300C10MC1WK is an AirTAC G-series filter regulator with a check (reverse) valve fitted and the 5 um (W) filter element: fine water and particulate removal plus downstream pressure regulation in one body, with a drain bowl but no lubricator. This 300-size configuration carries 3/8 in PT ports, a manual drain and a round external pressure gauge on an MPa scale, and the check valve stops downstream air flowing back through the unit. Maximum working pressure is 1.0 MPa (145 psi) and the regulating range with manual drain is 0.05-0.9 MPa (7-130 psi). Operating temperature is -5 to 70 C (non-freezing); the 300-size bowl is polycarbonate (PC).
This is a genuine AirTAC part. The G series spans sizes 200, 300, 400 and 600, with the 40 um standard element or the finer 5 um (W) option used here, plus differential-pressure, automatic or manual drains, embedded square or external round gauges in MPa, psi or bar scales, G (BSPP) or NPT thread options, and bracket or no-bracket mounting. AirTAC publishes flow data as curves rather than a single rating, so we confirm the datasheet and flow figures for your application on request.
| Model | Airtac GFR Filter Regulator GFR300C10MC1WK |
|---|---|
| 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) |
On a laboratory or QA test bench, the 5 um element and regulation deliver clean, stable air to pneumatic test fixtures, while the check valve keeps the rig's pressurised side isolated when the shop supply is shut off.
Feeding the gripper and eject cylinders of a high-cycle packaging machine, it provides fine-filtered regulated air and, via the check valve, prevents downstream air from pushing back through the unit during line stops.
Installed as the pilot-air feed to process control valve positioners, it delivers finely filtered, regulated air at a setpoint readable on the MPa gauge, with the check valve protecting the pilot circuit from supply-side backflow.
This code combines the finer 5 um (W) element with a fitted check valve (K) at the 300 size and 3/8 in PT ports - pick it where sensitive downstream equipment and a no-backflow supply are both required. Manual drain means condensate is bled by hand; automatic and differential-pressure drains are orderable. Gauge codes set a round or square face with MPa, psi or bar scales; trailing G or T change the thread from PT to G (BSPP) or NPT, and J omits the bracket. Flow is published as curves, not a single rated number, 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. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
W fits the finer 5 um filter element in place of the 40 um standard, and K fits a reverse (check) valve so air cannot flow backwards through the unit. The rest - 3/8 in PT ports, manual drain, round MPa gauge and standard regulation - is unchanged. Flow is published as curves, not a single rating; we confirm datasheet figures on request.
AirTAC publishes flow for the G series as curves rather than a single rated figure, so no flow number is stated here. Send your line pressure, downstream demand and acceptable pressure drop, and we will confirm the datasheet flow figures for this 300-size, 3/8 in unit on request.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business 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.