The AirTAC GFR300C10MJF2WTK AirTAC Filter Regulator 3/8 in NPT 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 GFR300C10MJF2WTK is an AirTAC GFR300 filter regulator: water and particulate removal plus downstream pressure regulation in a single body. This configuration has 3/8 in NPT ports, a 5 um filter element (the fine grade, versus the 40 um standard), a manual drain on the bowl, an embedded square gauge reading in psi, and a built-in reverse/check valve that holds downstream pressure when the upstream supply is removed. No mounting bracket is fitted. Maximum inlet pressure is 1.0 MPa (145 psi) and the regulator adjusts from 0.05 to 0.9 MPa (7-130 psi); operating temperature is -5 to 70 C, non-freezing.
This is a genuine AirTAC part from the GFR300 size, one of four sizes in the GFR filter-regulator range (200 / 300 / 400 / 600) with port sizes from 1/8 to 1 inch and options for drain type, filter grade, gauge style and scale, thread (PT standard; G and NPT to order), bracket and check valve. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing figures for your application on request.
| Model | GFR300C10MJF2WTK AirTAC Filter Regulator 3/8 in NPT |
|---|---|
| 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) |
Filtering and regulating the air feeding pneumatic positioners and control valve actuators on a process skid, where the 5 um element protects sensitive pilot components and the check valve holds the set pressure if the supply dips.
Conditioning the supply to sealing jaws, clamp cylinders and reject gates on a packaging line, with the square psi gauge giving operators a local setpoint readout at the machine drop.
Supplying sorted, regulated air to diverter and stopper cylinders along a conveyor system, keeping moisture and fine particulate out of the directional valves that cycle the gates.
Size 300 with 3/8 in NPT ports sits in the middle of the GFR range; step up to 400/600 or down to 200 depending on the flow your line needs and the porting of your downstream pipework. The 5 um element (code W) suits instruments, valves and actuators that need finer air than the 40 um standard element delivers. The manual drain means an operator opens the drain periodically to discharge collected condensate; choose automatic or differential-pressure drain codes if the unit is mounted where manual access is awkward. The square gauge is fitted here reading in psi; MPa and bar scales and an external round gauge are alternatives. Thread is NPT in this code; PT is the catalogue standard and G (BSPP) is also orderable. No bracket is fitted, so plan a rigid pipe or manifold mounting. Because flow is published as curves and not a single rating, 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.
AirTAC publishes flow for the GFR series as curves, not as a single rated number, so there is no one figure we can quote. Tell us your application and we will confirm the flow data from the datasheet and check the sizing for you before you order.
The manual drain means an operator periodically opens the drain at the bottom of the bowl to discharge collected water, so the unit should be mounted where it can be reached. The K code means a reverse/check valve is fitted, which holds downstream pressure if the upstream supply is shut off.
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.