The AirTAC GFR300C08MC2WK AirTAC Filter Regulator 1/4 in PT, 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 GFR300C08MC2WK is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has a 1/4 in PT port, a 5 um filter element (finer than the 40 um standard), a manual drain bowl in polycarbonate, a round gauge with a psi scale, a built-in reverse/check valve, and the mounting bracket included. Maximum inlet pressure is 1.0 MPa (145 psi) and, as a manual-drain unit, the regulator adjusts from 0.05-0.9 MPa (7-130 psi). Operating temperature is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR series is offered in sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, PT, G (BSPP) or NPT thread options, a choice of drain types, 40 um or 5 um filtration, gauge scales in MPa, psi or bar, and a low-pressure type. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR300C08MC2WK AirTAC Filter Regulator 1/4 in PT, 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) |
Clean, regulated air for a packaging line's pneumatic cylinders and directional valves at a 1/4 in drop: the 5 um element guards the valves against particulate and water carryover, and the psi gauge makes setpoint checks at the machine quick.
A filter-regulated supply for conveyor stoppers, gates and pusher cylinders, where the manual drain is opened during scheduled line checks and the check valve holds the downstream setting against supply-side fluctuations.
Regulated air to clamps and fixtures on a CNC cell: the 5 um filtration helps protect sensitive clamping valves, the psi gauge supports documented pressure settings, and the included bracket gives a tidy panel mounting point.
Size 300 with a 1/4 in PT port suits circuits plumbed at that size; step up to size 400 or 600 where the circuit needs more capacity, or down to 200 for compact drops. The 5 um element (code W) is the choice when downstream equipment needs finer filtration than the 40 um standard. The manual drain (code M) means condensate is released by opening the drain during routine checks; automatic (A) or differential-pressure (blank) drain codes suit units mounted where regular access is difficult. The round psi gauge is fitted here; embedded square gauges and MPa or bar scales are alternatives, and G (BSPP) or NPT threads can be ordered. Flow is published as curves, not a single rating, so send us your flow and pressure requirements 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.
Flow for the GFR300 series is published as curves rather than a single rated figure, so we do not quote a rated flow number. Send us your required flow and working pressure and we will confirm sizing from the AirTAC datasheet on request.
The M in this code sets a manual drain: condensate collected in the bowl is released by opening the drain during routine checks. If the unit will sit where regular access is awkward, order an automatic (A) or differential-pressure (blank) drain version instead. On this size 300 unit the bowl is polycarbonate.
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.