The AirTAC GFR300C10AJF1WTK AirTAC Filter Regulator NPT3/8 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 GFR300C10AJF1WTK is an AirTAC GFR-series filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This size 300 unit is threaded 3/8 in NPT, carries a 5 um filter element (code W against the 40 um standard), and has an automatic drain that ejects collected condensate without operator attention. An embedded square gauge scaled in MPa is fitted, along with a built-in reverse (check) valve; no mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi), the regulator adjusts from 0.15 to 0.9 MPa (20-130 psi), the bowl is metal, and the operating temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and can be ordered with manual, automatic or differential-pressure drains, 40 um or 5 um filtration, an embedded square gauge or an optional external round gauge scaled in MPa, psi or bar, and PT, G or NPT threads. Flow for the series is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR300C10AJF1WTK AirTAC Filter Regulator NPT3/8 |
|---|---|
| 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) |
Installed at the drop to a CNC machining centre, this unit filters water and swarf-laden particulate from the shop air and holds a steady regulated pressure to the machine's pneumatic valves, tool-changer actuators and clamping cylinders. The 5 um element and automatic drain keep the supply clean without daily attention.
Mounted on the air drop feeding a carton-sealing and shrink-wrap conveyor line, this filter regulator protects the line's directional valves and sealing cylinders from condensate and grit while holding the working pressure the actuators were set up for. The reverse valve holds downstream pressure if the upstream supply dips.
Fitted ahead of the regulators and hoses at a paint spray booth, this unit removes water and fine particulate that would otherwise spoil finish quality, and regulates the atomising air pressure at the gun manifold. The automatic drain and MPa-square gauge let the booth operator verify setup at a glance.
Size and port set the air path: this unit is size 300 with a 3/8 in NPT thread; step up to size 400 or 600 where the line demands more air, or down to 200 for compact points of use. Drain type matters: the automatic drain fitted here suits unattended duty, manual drain suits supervised installs, and the differential-pressure default drains on a pressure drop. Filter grade is 5 um here (code W) against the 40 um standard - choose 5 um where downstream valves and cylinders need finer protection. The embedded square gauge reads in MPa; an external round gauge in MPa, psi or bar is optional. Threads are ordered as PT (the standard), G (BSPP) or NPT - this unit is the NPT build - and a mounting bracket can be added where this no-bracket (J) configuration does not suit. Flow is published as curves, not a single rating, so send us your air demand 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.
AirTAC publishes flow for the GFR series as curves, not as a single rated figure, so we do not quote a number here. Tell us your line pressure and air demand and we will confirm the flow from the datasheet for this exact configuration - size 300, NPT3/8, 5 um element - before you order.
The automatic drain fitted to this unit ejects collected condensate on its own, which suits installations that run unattended or in humid conditions. A manual drain needs periodic operation by an operator, and the differential-pressure default drains when a pressure drop occurs. All three options keep the same filter-regulator function, the same 0.15-0.9 MPa (20-130 psi) adjustment range and the same 1.0 MPa (145 psi) maximum inlet pressure.
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.