The AirTAC GFR300C10ALJC2T AirTAC Filter Regulator NPT 3/8 in 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 GFR300C10ALJC2T is a GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single compact body. This 300-size unit carries a 3/8 in NPT port, a 40 um standard filtration element, an automatic drain that ejects collected condensate without manual attention, and a low-pressure regulator suited to circuits that run well below standard line pressure. An external round gauge with a psi scale is fitted so operators can read and set the outlet pressure directly, and the unit is supplied without a mounting bracket.
This is a genuine AirTAC part. The GFR family is published in 200, 300, 400 and 600 sizes with port options from 1/8 in to 1 in, a choice of drain types (differential-pressure, automatic or manual), a 5 um optional element, gauge styles and scales, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figure for your application.
| Model | GFR300C10ALJC2T AirTAC Filter Regulator NPT 3/8 in |
|---|---|
| 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 feeding a machining centre's pneumatic clamps and tool-change cylinders, conditioning the shop air and holding a steady low regulated pressure so clamping force stays repeatable through each cycle.
Mounted on the air drop serving diverters, stoppers and pusher cylinders on a packaging conveyor, removing condensate and pipe scale while regulating pressure to the level the actuators were designed for.
Fitted at the point of use on an assembly-station air header, delivering cleaned air to hand-held pneumatic tools and fixtures while the automatic drain keeps moisture out of the downstream circuit during shifts.
Start with the port size: this unit is the 300 size with a 3/8 in NPT thread, one step up from the 1/4 in class, so size the step against the air demand of the circuit rather than the fitting alone. The automatic drain suits unattended duty; choose manual or differential-pressure drain codes if you prefer operator-controlled or pressure-differential purging. The 40 um element is the standard grade; specify the W code for 5 um when finer particulate capture is needed. The fitted round gauge reads in psi; square gauges and MPa or bar scales are also available, and PT or G threads can be ordered instead of NPT. Because flow is published as curves rather than a single rated figure, 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 rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Send us your application details and we will confirm the relevant datasheet flow figure for this 300-size, 3/8 in unit before you order.
The L code in GFR300C10ALJC2T specifies the low-pressure regulator type, intended for circuits that run below standard line pressure; the exact adjustment range for the low-pressure type is not published, so confirm it with us. The C2 code adds an external round gauge with a psi scale for reading the outlet pressure, while an embedded square gauge is the standard fitting and MPa or bar scales can be ordered.
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.