The AirTAC GFR300C10MJF1WTK 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 AirTAC GFR300C10MJF1WTK is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This 300-size unit is threaded NPT3/8 (3/8 in) and carries a fine 5 um filter element, a manual drain for emptying the bowl, an embedded square pressure gauge scaled in MPa, and a built-in reverse/check valve that holds downstream pressure when the upstream supply is lost. It ships without a mounting bracket, so plan to support it by the pipework or add a bracket if the installation needs one. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C (non-freezing); with the manual drain fitted, the regulator adjustment range is 0.05-0.9 MPa (7-130 psi).
This is a genuine AirTAC part from the GFR filter-regulator family, which is available in 200, 300, 400 and 600 sizes with a choice of ports, threads (PT standard, G and NPT as order options), drain types, filter grades and gauge scales. Flow figures for this series are published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR300C10MJF1WTK 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 tool-change clamps and pneumatic cylinders on a machining centre, where the 5 um element protects close-tolerance valves from particles and the check valve holds clamp pressure if the shop supply drops.
Supplying the divert gates, bag sealers and hold-down clamps on a packaging conveyor, with the regulator set to the pressure the cylinder manufacturer specifies and the manual drain emptied during scheduled changeovers.
A point-of-use filter regulator on a loom or spinning-frame air drop, removing water carried over from the compressor room and holding a steady set pressure for the loom's pneumatic nozzles and doffing cylinders.
Size and port set the capacity of the unit: this one is 300 size with a 3/8 in NPT thread, one step up from the 1/4 in level, so choose it when your line runs at 3/8 in and you want the flow headroom of the larger body. The 5 um element (code W) suits downstream equipment that needs finer filtration than the 40 um standard; if your actuators and valves tolerate coarser air, the 40 um version is the lower-restriction choice. The manual drain means an operator opens the drain to empty collected water - pick the automatic drain variant instead if the unit sits where nobody drains it routinely. The square gauge is scaled in MPa; psi and bar scales and an external round gauge are available. Thread is NPT here; PT is the standard and G (BSPP) can be ordered. A mounting bracket is not included with this code.
Because flow for this series is published as curves and not as a single rated figure, we do not quote a flow number here - send us your application details and we will confirm the datasheet curve and sizing 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 GFR series as curves, not as a single rated number, so we do not quote a figure here. Tell us your inlet pressure, set pressure and expected air demand, and we will confirm the datasheet curve for this 300-size unit and check it against your application before you order.
The M in the code selects the manual drain: collected water stays in the bowl until someone opens the drain valve. That suits stations visited during regular maintenance rounds. If the unit will be mounted where nobody passes regularly, ask about the automatic-drain version of the same filter regulator instead. Note that with a manual drain the regulator adjustment range is 0.05-0.9 MPa (7-130 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.