The AirTAC GFR300C10ALJF3T 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 GFR300C10ALJF3T is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and holds the downstream pressure at a set point. This configuration is built around a 3/8 in NPT port in the size 300 frame, with an automatic drain that ejects collected condensate without anyone opening it, a 40 um standard filter element, a metal bowl, and an embedded square gauge reading in bar. The L in the code marks the low-pressure regulator type, and no mounting bracket is included with this unit.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and options that include manual or differential-pressure drains, a 5 um element (code W), an external round gauge with MPa, psi or bar scales, G (BSPP) or NPT threads, and a mounting bracket. AirTAC publishes flow as curves rather than a single rating, so we confirm the flow and datasheet figures for your application on request.
| Model | GFR300C10ALJF3T 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) |
Conditioning the air feeding a low-pressure spray or coating booth, where the element strips water and particles that would spoil the finish, the regulator holds a gentle stable set point, and the automatic drain clears condensate between shifts.
Filtering and regulating the air that drives the clamp, divert and eject cylinders on a packaging conveyor, with the automatic drain keeping moisture out of the downstream valves and the bar-scale gauge giving operators a visible set point.
Supplying clean, regulated air to a laboratory bench or test rig that runs at low pressure, where the 40 um element protects sensitive instruments and the local square gauge lets technicians verify the setting at a glance.
Every choice in this family is decodable from the code. Step through sizes 200/300/400/600 and ports 1/8 in to 1 in to match your air main and the flow the line needs; this unit takes a 3/8 in NPT port. Choose the drain: automatic (this unit, code A), manual (M), or the differential-pressure default. Choose the element: 40 um standard or 5 um with code W. Gauges are the embedded square type (this unit, bar scale) or an optional external round gauge in MPa, psi or bar. Thread is PT as the standard, with G (BSPP) and NPT as order options - this unit is specified NPT. A bracket is optional; this unit comes without one. The L code marks the low-pressure regulator type, and its exact adjustment range is not published in the catalogue, so we confirm it on request. Flow is published as curves, not a single rating, so 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 figure, so we do not quote a number here. Tell us your supply pressure and the flow your application needs, and we will confirm the sizing from the datasheet on request before you order.
This unit carries code A: an automatic drain that ejects collected condensate on its own, with no operator action. The catalogue default is the differential-pressure drain, and code M is the manual drain, which is emptied by hand. All three drain choices fit the same GFR300 filter-regulator body, so you pick the one that matches how the unit is attended on site.
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.