The AirTAC GFR300C08MC2WTK AirTAC Filter Regulator NPT1/4 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 GFR300C08MC2WTK is a size 300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration is built with a 5 um filter element (a finer grade than the 40 um standard), a manual drain for the bowl, a round external gauge reading in psi, a reverse/check valve, and an included mounting bracket. The port is 1/4 in with NPT thread, and the standard regulator covers an adjustment range of 0.05-0.9 MPa (7-130 psi). Maximum inlet pressure is 1.0 MPa (145 psi), and the operating temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with a choice of ports, threads (PT standard; G and NPT as order options), drain types, filter grades, gauges and scales. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing figures on request.
| Model | GFR300C08MC2WTK AirTAC Filter Regulator NPT1/4 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. |
|---|---|
| C0 | 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-C0 (two-unit set) |
Point-of-use conditioning for a machining centre's pneumatic valves and actuators: the 5 um element protects spools from particulate and the regulator sets a stable working pressure for clamping and tool-change circuits.
Filtering and regulating the air feeding conveyor stoppers, diverters and carton-closing cylinders on a packaging line, with the psi gauge giving operators a readable setpoint at the panel.
A bench-side filter regulator on a factory compressed-air drop, cleaning the supply for air tools and small cylinders while the check valve and manual drain keep the downstream circuit predictable between shifts.
Size 300 with a 1/4 in port sits in the middle of the GFR range; step up to 400 or 600 for larger air demand, or down to 200 for compact lines. Because published flow is presented as curves rather than one rated number, ask us to confirm sizing against your application before ordering. This unit pairs a 5 um element with a manual drain: choose manual where an operator can bleed the bowl routinely, automatic where drainage should be hands-free, or the differential-pressure default. The round psi gauge suits US-facing panels (square embedded gauges and MPa/bar scales are the other catalogue options), the fitted check valve holds downstream pressure if supply is interrupted, and NPT thread is ordered as an option over the PT standard. A bracket is included for mounting.
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, not as a single rated figure, so we do not quote a number. Tell us your application and we will confirm the flow and sizing figures from the datasheet on request.
The M in the code selects a manual drain: an operator opens the bowl drain to expel collected water instead of relying on an automatic or differential-pressure drain. With a manual drain, the standard regulator's adjustment range is 0.05-0.9 MPa (7-130 psi); automatic and differential-pressure drain versions are specified at 0.15-0.9 MPa (20-130 psi).
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.